The cellular process described below represents __________ and is used by bacteria in order to __________.
A DNA molecule untwist---> The two strands of DNA separate---> Molecular bases pair up---> Two identical DNA molecules are produced.
A. Replication, reproduce
B. Cellular respiration,Use energy
C. Osmosis,Maintain homeostasis
D. Binary fission,adapt
Answers
Answer:
A. Replication, reproduce
Answer:
i think its B
Explanation:
Related Questions
You are working with yeast cells, and you discover an inhibitor of one of the enzymes necessary
to convert pyruvate to ethanol. If you added this inhibitor to the yeast you are growing in an
open petri dish, what would happen?
O Adding this inhibitor would likely cause an increase ATP production from cells
O Adding this inhibitor would likely cause a decrease in the production of metabolic water
O Adding this inhibitor would likely cause an increase oxygen usage by the cell
O All substrate-level phosphorylation would stop in the yeast, though chemiosmosis would still
occur
More than one of the above is possible
O None of the above
Answers
Adding the inhibitor to the yeast cells in the petri dish would likely cause an increase oxygen usage by the cell.
HOW DO YEAST RESPIRE?
Yeast are unicellular organisms that belong to the kingdom Fungi. Yeasts are capable of respiring anaerobically i.e. can respire without oxygen. Yeast can, however, respire both aerobically and anaerobically. Yeast undergoes an anaerobic respiration called FERMENTATION, which is used to produce ethanol (alcohol) from pyruvate (product of glycolysis). If a substance that inhibits the conversion of pyruvate to ethanol is added to yeast cells growing in a petri dish, the process of fermentation will be inhibited. Hence, the yeast cells will have to switch to aerobic respiration and make use of oxygen.Therefore, adding the inhibitor to the yeast cells in the petri dish would likely cause an increase oxygen usage by the cell.
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RNA polymerase binds to a specific DNA nucleotide sequence during transcription.
What is the DNA sequence called where RNA polymerase binds, and initiates transcription?
Answers
The specific DNA sequence where RNA polymerase binds and initiates transcription is called the promoter region.
Why is a NATURAL RESOURCE called a natural resource?
Answers
Answer:because it comes from the earth. without any changes. all natural
Explanation:
Answer:
Because they are materials made from earth naturally that are made to help people
Explanation:
What color is an index contouring line usually?
Answers
Answer:
hope that helps?
Explanation:
A contour line (also isoline, isopleth, or isarithm) of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. It is a plane section of the three-dimensional graph of the function f(x, y) parallel to the (x, y)-plane. In cartography, a contour line (often just called a "contour") joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness or gentleness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines.
Determine the order of genes along a chromosome based on the following recombinationfrequencies: AB, 8 map units; AC, 28 map units; AD, 25 map units; BC, 20 map units; BD, 33 map unitsA. A-C-D-BB. C-D-B-AC. D-A-B-CD. B-A-C-D
Answers
the order of genes along a chromosome based on the following recombination frequencies: AB, 8 map units; AC, 28 map units; AD, 25 map units; BC, 20 map units; BD, 33 map units c . C. D-A-B-C
Recombination frequency is defined as the frequency of a single chromosomal crossover between two genes during meiosis.
The recombination frequency, which evaluates the genetic linkage used to produce a genetic linkage map, determines the order of entrance for each gene.
Recombination frequency is a heritable trait that could be altered by a few genes.
The frequency of recombination between any two genes in every organism has a numerical value, and this value must be between 0% and 50%.
Genes that are "unlinked" have a 50% recombination frequency and are found on different (non-homologous) chromosomes.
Genes that are relatively close to one another on the same chromosome are said to be "tightly connected" because their recombination frequency is almost zero.
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Which of the following is a
result of water being a
polar molecule?
A. The water molecules REPEL one another because of
their OPPOSITE charges on sides of the molecule.
B. The water molecules REPEL one another because of
their SAME charges on sides of the molecule.
C. The water molecules ATTRACT one another because
of their SAME charges on sides of the molecule.
D. The water molecules ATTRACT one another because
of their OPPOSITE charges on sides of the molecule.
Answers
Answer:
D. The water molecules ATTRACT one another because of their OPPOSITE charges on sides of the molecule.
The water molecule is H2O
Water has two positive charge Hydrogen and one negative charge Oxygen. They attract to each other because they to go have their valence electron filled in order to be stable.
Oxygen has 6 valence electrons, it wants 8 in order to be stable. By bonding with two Hydrogen, it would fill the valence electron.
The atomic mass of the most common isotope of magnesium
Answers
Answer:
23.98504 amu
Explanation:
Christopher is in medical school, and his residency requirement calls for him to work 28 hours straight before havin
time off. When he gets done with this shift, he finds it difficult to go right to sleep. He keeps up this schedule for
nearly a year, when he realizes he no longer has a problend falling asleep. Which of the following is this an example
of?
A. Christopher has adjusted to a longer than normal day cycle with regard to work and sleep.
B. Christopher has adjusted to a shorter than normal day cycle with regard to work and sleep.
C. Christopher is no longer affected by his long work hours because he spends more time in non-REM sleep.
D. Christopher is no longer affected by his long work hours because he spends more time in REM sleep.
Next
Answers
Christopher has adjusted to a longer than normal day cycle with regard to work and sleep. That is option A.
What is sleep cycle?Sleep cycle is defined as the stages an individual undergoes to be able to rest the body and this occurs between the rapid eye movement (REM) and non rapid eye movement (NREM) phases of sleep.
The phases of non rapid eye movement (NREM) sleep cycle include the following:
NREM stage 1= This cycle only lasts for just 5 - 10 minutes and a person in this stage can easily be woken up.NREM stage 2 : This is also called a period of light sleep and the vital signs of the major body organs decrease at this stage.NREM stage 3 : This is the slow-wave sleep stage where the tissue of the body is being repaired and regenerated.Christopher, who is a medical student from the question, works for more than a day( 28 Hours). He carries out this routine for a year and the body adjusts to the sleeping schedule.
With time, it was finally discovered that he didn't find problems with falling asleep due to the full adjustment of the body system to the new sleeping schedule.
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scientists often test their hypotheses with controlled experiments. which of these is a rule for conducting a controlled experiment?
a. change at least two variables at a time
b. keep all variables constant
c. change as many variables as possible
d. change only one variable at a time
Answers
Changing only one variable at a time is a rule for conducting a controlled
experiment.
Controlled experiment involves the use of dependent and independent
variables . Changes in the independent variable brings about a
corresponding change in the dependent variable which is then recorded.
It is however important to note that changing more than only one variable at
a time won't accurately determine if the changes in the results were as a
result of one cause. This is why only one variable has to be changed at a
time.
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If inhibitor X changes sucrase activity to a Vo of 0.25 mM per minute when [S] = 5.0 mM, and a Vo of 0.333333333333 mM per minute when [S] = 2.0 mM, calculate the new Vmax. A. 0.50 mM per minute
B. 1.0 mM per minute
C. 2.5 mM per minute
D. 5.0 mM per minute
E. 10.0 mM per minute
Answers
The new Velocity_max is 0.5 mM per minute, which corresponds to option A.
To calculate the new Vmax, we can use the Michaelis-Menten equation, which relates the reaction rate (Vo) to the substrate concentration ([S]) and the maximum reaction rate (Vmax). The equation is given as:
Vo = (Vmax × [S]) / (Km + [S])
We have two sets of data points:
[S] = 5.0 mM, Vo = 0.25 mM/min
[S] = 2.0 mM, Vo = 0.333333333333 mM/min (approximately 1/3 mM/min)
From the first set of data, we can calculate the Km value by rearranging the Michaelis-Menten equation as:
Km = ([S] × Vmax) / (Vo - Vmax)
Substituting the values, we get:
Km = (5.0 mM × Vmax) / (0.25 mM/min - Vmax)
Similarly, from the second set of data, we get:
Km = (2.0 mM × Vmax) / (0.333333333333 mM/min - Vmax)
Since Km should be constant, we can set the two equations equal to each other:
(5.0 mM × Vmax) / (0.25 mM/min - Vmax) = (2.0 mM × Vmax) / (0.333333333333 mM/min - Vmax)
By solving this equation, we find Vmax = 0.5 mM/min.
Therefore, the new Vmax is 0.5 mM per minute, which corresponds to option A.
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Which situation is most likely to result in speciation?
Responses
Two populations live in very similar environments.
Migration occurs frequently between two populations.
Two populations become genetically isolated. Correct
Two populations regularly interbreed.
Answers
Explanation:
The situation that is most likely to result in speciation is when two populations become genetically isolated. When genetic isolation occurs, the two populations will undergo independent genetic changes, and over time, they may become so different that they can no longer interbreed and produce viable offspring. This can lead to the formation of two distinct species.
The other options mentioned are less likely to result in speciation. If two populations live in very similar environments, they may continue to interbreed and exchange genetic material, which would not result in speciation. Similarly, frequent migration between two populations would result in gene flow, which would prevent genetic differentiation and the evolution of distinct species. If two populations regularly interbreed, they will continue to exchange genetic material and may not diverge enough to become separate species.
Answer:
You are right, it is C!
Explanation:
Took the k12 quiz :)
What is the significance of anaphase in this process?
a
Anaphase usually ensures that each daughter cell has the same number of chromosomes as the parent cell.
b
Anaphase usually ensures that each daughter cell has twice as many chromosomes as the parent cell.
С
In anaphase, the cell splits in half.
d
In anaphase, the DNA is being replicated.
Answers
Answer:
a ) Anaphase usually ensures that each daughter cell has the same number of chromosomes as the parent cell.
Explanation:
Mitosis: After DNI duplication and condensation, Sister chromatids of the chromosome, are held together in the equatorial plane until they reach the Anaphase, during which certain enzymes are activated to break the bonds among them and the separation of the chromatids occur, migrating to the opposite poles. Meiosis: Gamete formation involves the random and independent segregation of the alleles. After crossing-over, homologous chromosomes which are located in the equatorial plane, get separated. During anaphase I occur the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair. During Anaphase II, enzymes are activated to break the bonds that keep together the chromosome and separate the sister chromatids.Anaphase (Mitosis) and Anaphase II (Meiosis) are very similar. By separating sister chromatids, anaphase is responsible that each daughter cell has the same number of chromosomes as the parent cell. Some mutations or alterations in the chromatids migration process might occur during anaphase, such as non-disjunction, which is a defect or mistake in the separation of the homologous chromosomes during anaphase of the meiotic division.
MENTION 5 IMPORTANCE OF FUNGI IN AGRICULTURE
Answers
Fungi are in charge of decomposing organic matter and releasing carbon, oxygen, nitrogen, and phosphorus into the soil and the atmosphere along with bacteria. Many domestic and industrial operations, including the production of bread, wine, beer, and some cheeses, depend on fungi.
Fungi are used by people for a variety of things, including as food and in food preparation. Fungi are also used by people to manage pests. Fungi can also be utilized to create human hormones, citric acid, and medicines. Additionally, fungi are model study organisms.
Most ecosystems depend on fungi as significant decomposers.
Most fungi's main function is to maintain the natural world. Fungi and bacteria both play a crucial role in the soil food web as decomposers. They transform difficult-to-digest organic material into forms that other species can utilise.In addition to producing proteins, carotenoids, and other elements for food, fungus also serve as a source of food. The ability of fungi to ferment fruits and grains into alcoholic beverages, bread, and cheese has been utilized.To know more about Fungi please click here : https://brainly.com/question/10878050
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Give an example of a situation where gene expression without regulation could potentially harm an organism.
Answers
An example of a situation where gene expression without regulation could potentially harm an organism is in the development of cancer.
Cancer is often caused by mutations in genes that control cell growth and division. These mutations can cause these genes to be expressed in an unregulated manner, leading to uncontrolled cell growth and the formation of tumors.
Without regulation of gene expression, the cell can continue to divide and grow out of control, eventually leading to the development of cancer. Gene regulation mechanisms, such as DNA methylation, histone modification, and microRNA, are critical in preventing the uncontrolled expression of genes that can lead to cancer.
Thus, the regulation of gene expression is essential for maintaining normal cellular function and preventing the development of diseases like cancer.
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Speed describes how fast an object moves. Speed is described by?
Answers
Answer:
Distance & Time
Explanation:
Speed is described by distance
reasons why science teachers think practical sciences is a good thing.
rubric
identify reasons 4 marks
explanation and practical example 16 marks
Answers
Science teachers consider practical sciences to be a valuable component of science education for several reasons:
Hands-on Learning: Practical sciences provide students with the opportunity to engage in hands-on learning experiences. This approach allows students to actively explore and manipulate materials, conduct experiments, and make observations.
Example: In a biology class, students may conduct a dissection of a preserved specimen to study the anatomy and structure of organisms. By physically dissecting and examining the different organs and systems, students gain a tangible understanding of the subject matter.
Application of Theory: Practical sciences enable students to apply theoretical knowledge acquired in the classroom to real-world situations. By engaging in practical activities, students can bridge the gap between abstract concepts and their practical applications, fostering a more comprehensive understanding of scientific principles.
Example: In a chemistry class, students might perform experiments to understand chemical reactions and concepts like stoichiometry. By actually mixing and observing different substances, measuring quantities, and analyzing the results, students can see how theoretical concepts translate into practical applications.
Development of Scientific Skills: Practical sciences help students develop essential scientific skills, such as critical thinking, problem-solving, observation, data analysis, and communication. Through practical activities, students learn to formulate hypotheses, design experiments, collect and analyze data, draw conclusions, and communicate their findings effectively.
Example: In a physics class, students could design and conduct an experiment to investigate the relationship between force and motion. By planning the experiment, taking measurements, analyzing the data, and presenting their findings, students enhance their scientific skills and develop a deeper understanding of physics concepts.
Engagement and Motivation: Practical sciences often increase student engagement and motivation in science education. Hands-on activities provide a more interactive and dynamic learning environment, making science more interesting and accessible to students. It can spark curiosity, promote active participation, and cultivate a sense of wonder and excitement about the natural world.
Example: In an environmental science class, students may visit a local ecosystem to conduct field observations, collect samples, and analyze the data they gather. By immersing themselves in the real environment and actively participating in the scientific process, students are more likely to be motivated and engaged in their learning.
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Describe how a lysosome enzyme would normally be created, including the steps involved and the organelles that contribute to the process
Answers
Answer:
Lysosomal enzymes are produced in the ER and transported to the Golgi complex to be finally incorporated into acidified vesicles
Explanation:
Lysosomes organelles are generated by the fusion of vesicles from the Golgi complex with endosomes. This organelle contains more than 50 types of hydrolytic enzymes capable of breaking down different macromolecules. Lysosomal enzymes are produced in the endoplasmic reticulum (ER), and then they are exported to the Golgi complex, where mannose-6-phosphate (M6P) label is added to be finally packaged into acidified vesicles. Mutations in the genes that encode for lysosomal enzymes are known to produce Lysosomal Storage Diseases (LSD) including Tay-Sachs disease.
Most animals develop from what embryonic tissues? Select all that apply.
Answers
PLS HELP THIS IS FOR A GRADE I WILL GIVE BRAINLYEST
1. As a result of deforestation, a forest environment changes to a desert environment. Identify the trait that is most likely to be naturally selected as a result of the environmental change described.
A. A nocturnal schedule
B. The ability to climb trees
C. A spotted coat
D. Thick fur
2. Which of the following describes the effects of natural selection on the traits of finch species of the Galapagos Islands?
A. The finch species on different islands all have very similar beak lengths and widths.
B. Each finch species evolved a beak that suits its island environment and food source.
C. The finch species on the different islands evolved long thin beaks to survive on the small seeds of the Galapagos.
D. Individual finches within each species evolved different beaks to contribute to genetic variation.
3. The polar bear lives within the Earth’s northern polar region. Unlike other bears who live on land, polar bears spend most of their time roaming the sea ice in search of food. It is here on the sea ice they hunt the major food source, the sea lion. Because of their dependence on the sea ice, polar bears are classified as marine mammals. As the sea ice is melting due to global warming, the polar bear is now considered a vulnerable species.
If this trend continues, which statement describes how the polar bear be affected?
A. They will have to hibernate longer.
B. They will be easier targets for predators.
C. They will live in the water instead of on land.
D. They will either adapt, migrate, or become extinct.
4. Saber Tooth Tigers were predatory mammals known for their large protruding saber-like teeth. They lived on the American Grasslands for over 40 million years. Saber Tooth Tigers are a member of a group of animals called “Megafauna.” Scientists believe their food sources were large herbivores. At the end of the last ice age (10,000 yrs. ago), they became extinct.
From the information given, what is the probable reason the Saber Tooth Tiger did not survive into modern times?
A. The Saber Tooth Tigers suffered from disease.
B. The Saber Tooth Tiger exhausted its food source.
C. The Saber Tooth Tiger could not adapt to environmental changes.
D. The Saber Tooth Tiger was hunted to the point of extinction by predators.
5. An oasis in a desert was very swampy. Two different species of frogs lived in the swamp. A chemical was spilled in the swamp. Some of the chemical is still found in the swamp. One frog species is now extinct. The species that survived is still found in the swamp. The surviving species probably had the ability to –
A. Move far away
B. Eat different insects
C. Adapt to the Chemical
D. Reproduce in high numbers.
Answers
Answer:
1) A- a nocturnal schedule, since animals in deserts stay cool during the night.
2) D- individual species evolved different beaks to contribute to genetic variation.
3) D- they will adapt, migrate, or become extinct. An adaptation example is getting shorter fur.
4) D- hunted to extinction. Humans probably valued their unique teeth.
5) C- adapt. If it didn't die, something in its genetics probably caused this.
Brainliest would be really cool, hope this helps! Sorry if any are wrong.
Please help me with 3 now please
Answers
Answer:
1.40 plants each
2.1.667 each approximately 2each
What effective control measures would you recommend to these farmers against nematode parasites?
Answers
Answer:
Nematode parasites can cause significant damage to crops and reduce yield, so it is important for farmers to take effective control measures. Here are some recommendations that farmers can consider:
1. Crop rotation: Farmers can rotate their crops with non-host plants to break the nematode life cycle. This helps to reduce the population of nematodes and prevent them from building up in the soil.
2. Soil solarization: This involves covering the soil with a clear plastic sheet during the hot summer months to increase the temperature of the soil and kill nematodes.
3. Biocontrol agents: Certain predatory microorganisms and beneficial nematodes can be effective in controlling plant parasitic nematodes. These biocontrol agents can be applied to the soil to help suppress nematode populations.
4. Nematicides: Chemical nematicides can be used to kill nematodes, but they should be used judiciously as they can have negative environmental impacts and may harm other organisms in the soil.
5. Sanitation: Farmers should practice good sanitation practices such as removing infected plant debris and cleaning tools and equipment to prevent the spread of nematodes.
6. Resistant varieties: Planting resistant crop varieties can help reduce the damage caused by nematodes.
7. Soil improvement: Maintaining soil health through practices such as adding organic matter can improve soil structure, fertility, and water-holding capacity, making it less hospitable to nematodes.
By implementing these control measures, farmers can effectively manage nematode infestations and protect their crops from damage.
Answer:
Explanation:
ome effective control measures against nematode parasites, such as crop rotation, use of resistant crop varieties, biological control methods, soil solarization, and chemical control using nematicides. Here are some links for further reading:
Brainliest pls
Type the correct answer in the box. Spell all words correctly.
What is a close relationship between two organisms that live together called?
The close relationship between two organisms that live together is called
Reset
Next
Answers
Answer:
symbiosis.
Explanation:
The term that you are referring to is symbiosis. (a symbiotic relationship)
Symbiosis is a proximate and often long-term interaction between two or more different biological species.
1. Identify the method of climate study that can tell how much rain an area had over the last 200 years.
microscopic organism data
sediment core data
O
tree ring data
ice core data
Answers
Answer:
It soubds like all the above except microbiological organisms.
Answer: The correct answer is Tree Ring Data (Option C)
Explanation:
A tree-ring record can be used to produce information about rainfall, temperature, the presence of groundwater, and fires around where the tree is growing.
Identify the tissue sample and answering the following questions
Answers
The organism has different types of Connective tissues providing support and connectin to organs and other structures. 1) Connective tissue. 2) Dense irregular connective tissue.
What is the connective tissue?The connective tissue, also known as support tissue, supports and connects all the other tissues and organs in the body. Every substance exchange between epitheliums, muscles, nerves, and the vascular system must be done with the connective tissue as an intermediate.
According to its specialization, there are different kinds of connective tissue, such as cartilage, blood, bony tissue, or lymphatic tissue, among others. Each type of connective tissue has its own cell type according to its functions. Cellular types, fibers, and aqueous medium appear in different amounts in different parts of the organism.
The connective tissue is composed of cells that are very separated from each other because of the abundant extracellular matrix, which is produced by fibroblasts, a predominant cell population. The extracellular matrix has fibrillar proteins of different natures such as collagen, fibrillin, and elastin that determine tension properties. There are also adessive proteins such as fibronectin and laminin. All of these proteins are included in a medium that contains water, salts, GAGs, proteoglycans, glycoproteins, and other macromolecules that confer turgidity and facilitate diffusion. The properties of this matrix in different connective tissues mark the difference between each other.
The connective tissue originates in the mesoderm, which in the early stages of development, differentiates from an embryonary connective tissue called mesenchyme.
1) Connective tissue
2) Dense irregular connective tissue
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An amino acid's unique characteristics is defined by the ________.
Answers
knowing the nervous system how is that information used in billing and coding ?
Answers
Answer:
In the context of billing and coding, knowledge of the nervous system is essential for accurately documenting and coding medical procedures and services related to neurology and neurosurgery. Medical coders and billers need to understand the anatomy, physiology, and terminology associated with the nervous system to appropriately code diagnoses, procedures, and services provided to patients.
Understanding the nervous system helps in accurately identifying and coding conditions such as nerve disorders, neuropathies, strokes, brain tumors, spinal cord injuries, and other neurologic conditions. It enables the coder to assign the correct International Classification of Diseases (ICD) diagnosis codes, such as ICD-10-CM, which are used to indicate the patient's condition.
Furthermore, knowledge of the nervous system assists in coding procedures and services related to neurology, such as nerve conduction studies, electromyography (EMG), electroencephalography (EEG), neurosurgical procedures, and interventional neuroradiology procedures.
Accurate coding ensures that healthcare providers are appropriately reimbursed for the services they provide and that the insurance claims are processed correctly. It also helps in data analysis, research, and monitoring trends in neurologic conditions and treatments.
Explanation:
In summary, understanding the nervous system is crucial in the billing and coding process to ensure accurate documentation, appropriate reimbursement, and effective management of neurologic conditions in healthcare settings.
Which of the following statements is true?
Humans are at the top of the evolutionary ladder because we have the largest brains.
Humans are more complicated than crickets, so they are better organisms.
Any type of change in the shape or behavior of an organism is considered an evolution.
Macroevolutionists cannot make direct observations because most of the organisms are dead or extinct.
Answers
Answer:
Macroevolutionists cannot make direct observations because most of the organisms are dead or extinct.
Explanation:
In physics, a system is defined as the portion of the universe that has been chosen for study. Systems may be complex, such as a whole planet, or simple, such as the water inside a pot. The universe outside the system is called the surroundings. A closed system is one that does not exchange matter with its surroundings and does not experience any outside forces. An open system, on the other hand, can exchange matter with its surroundings and does experience outside forces.
The idea of systems and surroundings was not always part of physics. In 1824, the French physicist Nicolas Carnot applied the idea of systems to thermodynamics. A little later, German physicist Rudolf Clausius added the idea of surroundings. Today, system and surroundings are terms applied also to mechanical systems, as well as used in other scientific fields such as biology.
Examples of open systems are common in everyday life. A car driving down a road is a system. The car engine produces exhaust, which is matter passed to its surroundings. Friction between the car and the road is an outside force that acts on the system. Closed systems are rare in everyday life. They are commonly used in physics laboratories to simplify system analysis and calculations.
So, what questions can help someone decide whether the system under consideration is open or closed? The first question to ask is: Does the system exchange matter with its surroundings? If yes, it is an open system. If no, it is a closed system. The second question is: What is the source of the forces experienced by the system? If all forces originate within the system, the system is closed. If forces act on the system from outside of the system, it is an open system.
QUESTION 1
A student has chosen to study a swinging pendulum. The pendulum would be ____________.
OPTIONS
a system
the surroundings
a universe
a force
QUESTION 2
Which of the following statements describes a closed system?
OPTIONS
It exchanges matter with its surroundings.
Its surroundings act on the system.
It experiences only forces originating from within.
None of the above
QUESTION 3
Which of the following statements about cars indicates that they are an open system?
OPTIONS
Friction is present between different parts of the engine.
The car burns gasoline and produces exhaust.
The engine heats up as the car is driven.
The faster the car is driven, the faster its tires turn.
QUESTION 4
What is the most common use of closed systems?
OPTIONS
To minimize environmental damage
To create more efficient systems
To simplify system analysis
To predict system structure and behavior
QUESTION 5
Which of the following questions is important for deciding whether a system is open or closed?
OPTIONS
Does the system exchange matter with its surroundings?
Is the system composed of multiple parts?
Does the system contain more than one state of matter?
Is the system natural or man-made?
Answers
Answer:
head of the humerus
Describe how the following would change if you were to extend your arm at the elbow (that is, stretch the biceps).
a) the length of the muscle spindles in the biceps muscle
b) the firing of muscle-spindle afferents from the biceps muscle
c) the firing of alpha motor neurons that project to biceps muscle extrafusal fibers (assume you are trying to hold your arm in place.)
Answers
Answer:
a. The biceps would relax causing it to increase in length
b. The firing of the muscle-spindle afferents from the biceps would decrease.
c. The alpha motor neurons would contract or decrease.
Explanation:
The skeletal joints in the human or animal body are controlled by muscles. Examples of these muscles are the biceps and triceps found in the human arm. They control the elbow joint with the biceps in front and triceps at the back of the elbow.
When the arm is extended from the elbow, the biceps relaxes or extends while the triceps contracts. This increases the length of the biceps and reduces the triceps length.
We have that for the Question "Describe how the following would change if you were to extend your arm at the elbow (that is, stretch the biceps)"
Answers:
A) Muscle spindles are receptor existing in the muscle which feel the charge of exchange of size of muscle as properly as the size of muscle fibres. These are receptor existing in spiral structure around the intrafusal fibres. When muscle fibres are stretched that is stretching of extrafusal fibres motives simultaneous stretch of intrafusal fibres and so the stretch of muscle spindles due to the fact muscle spindles are current parallel to the extrafusal fibres. Therefore the spindle size enlarge when muscle size is increased.B) when we lengthen our arm at elbow ,the biceps size amplify which stimulate the muscle spindles . This stimulation is essential due to the fact the activation of muscle spindles initiates the afferent impulse which contains data to the brain and overstretching of the muscle is averted . To forestall overstretching ,Motor fibres are activated which contract the muscle . So firing od muscle spindles increases.C) the firing from the alpha motor neurones is extended due to the fact to preserve arm in region we need to observe pressure at elbow joint . There for this voluntary muscle contraction alpha motor neurones firing increases.
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Most articles pass right through the atom, this means that most of the atom is
Answers
Most articles pass right through the atom, this means that most of the atom is an empty space.
What is an atom?An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.
Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.
As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.
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