During meiosis, homologous pairs of chromosomes can exchange pieces of dna after they synapse.
a. True
b. False
Answers
True, during meiosis, homologous pairs of chromosomes can exchange pieces of dna after they synapse. After synapsing during meiosis, homologous chromosomal pairs can swap DNA fragments.
One cell divides into two diploid cells throughout this process. Meiosis and mitosis occur before DNA replication. Before puberty, the reproductive systems of both sexes are largely dormant. Meiosis is characterized by DNA replication, two rounds of cell division, and the formation of four daughter cells, each of which has half as many chromosomes as the parent cell. Meiosis I and Meiosis II are the names of the two meiotic divisions. Each chromosome's DNA is duplicated during the S phase of the cell cycle, creating two identical sister chromatids that are held together by sister chromatid cohesion until the start of meiosis.
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Related Questions
Which of the following would be true if you stood on the moon?
A
Your mass would increase.
B
Your mass would stay the same.
C
You would weigh the same as you do on Earth.
D
You would would weigh more than you do on Earth.
*Dont respond if you dont know, irrelevant answers will be reported and removed*
Answers
Answer:
B. Your mass would stay the same.
Explanation:
Answer:
b
Explanation:
your mass would stay the same
HELPPPPPPPPPPPPPPPPPPP
Answers
Answers:
5. Describe how light microscopes are used to magnify objects:
When light reflects off of an object being viewed under the microscope and passes through the lens, it bends towards the eye. This makes the object look bigger than it actually is.
What are limitations of using a light microscope?Limitation: Low Resolution. Because optical microscopes use normal white light, the limit of their resolution is 200 nanometres. This means that objects smaller than this cannot be properly viewed by an optical microscope.
6.What is the advantage of using electron microscopes?
Advantages would be of course magnification and higher resolution
as electrons rather than light waves are used, it can be used to analyze structures which cannot otherwise be seen. The resolution of electron microscopy images is in the range of up to 0.2 nm, which is 1000x more detailed than light microscopy.
7.Contrast TRANSMISSION ELECTRON MICROSCOPES (TEM)with SCANNING ELECTRON MICROSCOPES(SEM):The main difference between SEM and TEM is that SEM creates an image by detecting reflected or knocked-off electrons, while TEM uses transmitted electrons (electrons that are passing through the sample) to create an image.
8. Answer:All cells share four common components: plasma membrane, cytoplasm, DNA, and ribosomes.
9. What is the defining characteristic of a prokaryotic cells?The defining characteristic of prokaryotes is that they lack a membrane-enclosed nucleus. The single chromosome, usually circular, is tightly wound and compact. The region of the cytoplasm containing the chromosome is called the nucleoid.
10.What is the defining characteristic of a eukaryotic cell?Eukaryotic cells are defined by the presence of a nucleus surrounded by a complex nuclear membrane.
Hope this helps^^Explanation:
These friendly creatures love to talk and play using a variety of sounds to tell their story ? It’s a scavenger hunt pls help
Answers
Answer:
They are dolfins probably
Explanation:dolfins are friendly and by variation of sounds they communicate
According to the question, they are dolphins, dolphins are friendly and by variation of sounds they communicate
How does echolocation work?The melon, an organ located in the dolphin's forehead, focuses the dolphin's click sounds and projects them into the water.
The clicks travel through the water, bounce off objects, and are registered in the dolphin's jaws and teeth.
Thus, they are dolphins.
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PLEASE HELP THIS IS DUE TODAY!!!!!!!!!!!!!!!!!!
You worked on Earthquake Engineering Design Challenge during the last three parts. Please upload your S.T.E.M. Lab Earthquake Engineering Design Challenge worksheet. Make sure that you have answered all parts for Steps 1–13 and your work is shown on the worksheet and double check your work. When you are sure that you have answered all of the Steps accurately, please upload your worksheet.
30 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!
I WILL MARK BRAINLEST!!!!!!!!!!!!!!!!!
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Answer:
its easy just read it
Explanation:
and can someone give me branliest so I can rank up please
I need 5 in total
which blood vessel provides oxygenated blood to the left side of the head?
Answers
The blood vessel that provides oxygenated blood to the left side of the head is called the left internal carotid artery. This artery originates from the aortic arch and travels up the neck to the base of the skull. It then enters the skull through the carotid canal and branches off to supply blood to the left side of the brain.
The left internal carotid artery is responsible for providing oxygenated blood to the left hemisphere of the brain, which is responsible for language, analytical thinking, and logical reasoning. The blood that flows through this vessel is rich in oxygen and nutrients, which are necessary for proper brain function. It is important to note that the left internal carotid artery is just one of many blood vessels that supply the brain with oxygenated blood. Other important vessels include the right internal carotid artery and the vertebral arteries, which together form the circle of Willis. This network of vessels ensures that the brain receives a constant supply of oxygen and nutrients, which are essential for its proper function.
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which following pairs of body functions are normally involuntary actions but can be controlled voluntary for a short periods of time
Answers
Explanation:
Medulla oblongata controls consciousness and arousal (the reticular formation) and its three vital reflex centers control the blood vessels diameter, heartbeat and breathing rate (the involuntary actions). This makes option D correct. The lower part of brain stem forms the hind brain which comprises of medulla oblongata, pons and cerebellum. This makes option C incorrect as medulla is not part of forebrain. Cerebellum is the convoluted subdivision of brain stem and is associated with coordination of muscular movement, muscle tone and balance i.e. the voluntary actions. Option B is incorrect. Spinal cord, along with brain, forms central nervous system which serves to integrate the sensory inputs from internal and external environment as received by sensory neurons and process and finally transmit the nerve impulses to effectors (muscles and glands). This makes option A incorrect.
Which of the following pieces of evidence would not support the hypothesis that emotional expression is biologically based? Click or tap a choice to answer the question. Facial expressions of emotions look very Babies' faces show emotional similar across cultures. expressions. The faces of other animals show It is possible to learn to hide certain emotional expressions. emotional expressions.
Answers
The option that would not support the hypothesis that emotional expression is biologically based is It is possible to learn to hide certain emotional expressions. Hence option D is correct.
The other options all provide evidence that emotional expression is biologically based. For example, facial expressions of emotions look very similar across cultures, which suggests that they are not learned but are instead innate.
Babies' faces show emotional expressions, which also suggests that emotional expression is innate. And the faces of other animals show emotional expressions, which suggests that emotional expression is not unique to humans.
However, the ability to learn to hide certain emotional expressions suggests that emotional expression is not entirely biologically based.
This is because it suggests that people can control their facial expressions, which means that they are not simply responding to their emotions in a reflexive way.
Therefore option D, It is possible to learn to hide certain emotional expressions is correct.
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Your question is not framed correctly, the correct question is:
Which Of The Following Pairs Of Emotions Are The Primary Emotions The People Tend To Have The Most Difficulty Distinguishing From Each Other? Click Or Tap A Choice To Answer The Question.
A. Facial expressions or emotions look very similar across cultures
B. Babies' faces show emotional expressions.
C. The faces of other animals show emotional expressions.
D. It is possible to learn to hide certain emotional expressions.
what was the main goal of the human genome project (hgp)?
Answers
In an experiment, a researcher prepares a reaction mixture by dissolving a substance in a buffered solution. The substance is the substrate of a certain enzyme. The researcher adds a small amount of the enzyme to the reaction mixture and measures the amount of product that is formed over time. Which of the following best predicts the immediate result of adding more substrate to the reaction mixture at the point indicated by the arrow in Figure 1?
answer choices
The amount of product will decrease until the reaction rate goes to zero.
The amount of product will increase until the reaction reaches its equilibrium point or until the substrate is used up by the reaction.
The amount of product will increase without stopping because the enzyme will be unchanged by the reaction.
The amount of product will decrease until the reaction reaches its equilibrium point or until the enzyme is been used up by the reaction
Answers
Until equilibrium is reached or all of the substrate has been eaten, the amount of product will continue to increase.
How can the rate at which an enzyme-catalyzed reaction occurs be determined?It is possible to identify enzyme catalysis by measuring the appearance of the product or the disappearance of the reactants. The same reactants may be used in a reaction, but a different catalyst may produce different results.
Which of the following would speed up how quickly reactants turn into products in a chemical reaction?The more the temperature rises, the more crashes occur. As a reactant's concentration rises, the likelihood of reactant collisions increases as well, accelerating the rate of the reaction.
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The circulatory system works with the integumentary system to maintain body temperature. The integumentary system controls things like sweating and shivering while the circulatory system controls what?
A. vasodilation and vasorestriction.
B. delivery of nutrients.
C. delivery of oxygen.
D. waste removal.
Answers
Answer:
D
Explanation:
The circulatory system is made up of blood vessels that carry blood away from and towards the heart. Arteries carry blood away from the heart and veins carry blood back to the heart. The circulatory system carries oxygen, nutrients, and hormones to cells, and removes waste products, like carbon dioxide.
I need help with this question (don’t need the evidence part)
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why is cell division and motosis important for maintaining complex organism?Because Cell division is fundamental to all living organisms and required for growth and development. As an essential means of reproduction for all living things, cell division allows organisms to transfer their genetic material to their offspring. And Cell division plays an important role in all living organisms, as it is essential for growth, repair and reproduction. This process helps in Renewing of damaged cells. Production of new cells from older ones. And motosis is a process that helps cell devide and grow. It is important for organisms because it allows them to survive and grow. Motosis is also important for the development of embryos, as it helps them to develop into different types of cells.
Cell division:Cell division is the process in which a parent cell divides, giving rise to two or more daughter cells. It is an essential biological process in many organisms. It is the means used by multicellular organisms in order to grow, replenish (repair), and reproduce.
Motosis:The mitosis is a part of the cell cycle in which replicated chromosomes are separated into two new nuclei. Cell division gives rise to genetically identical cells in which the total number of chromosomes is maintained. Therefore, mitosis is also known as equational division.
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Explanation:
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When working out the energy in food, the equation is:
Energy of food=mass of water x temperature change of water x 4.2
why do you multiply by 4.2?
Answers
Answer: The specific heat capacity of water is 4.2 J/g C°
Explanation: The equation you provided is actually for calculating the amount of heat transferred to or from water when its temperature changes. This equation is commonly known as the specific heat capacity equation and can be expressed as follows:
Q = mcΔT
Where Q is the amount of heat transferred, m is the mass of the substance (in this case, water), c is the specific heat capacity of the substance (which is 4.2 J/g°C for water), and ΔT is the change in temperature of the substance.
To calculate the energy content of food, a different equation is used, which is known as the calorimetry equation. This equation can be expressed as follows:
Energy content of food = heat gained by water / mass of food
In this equation, the heat gained by water is the amount of heat transferred to the water when the food is burned in a calorimeter, and the mass of the food is the mass of the food sample that was burned. The energy content of the food is typically expressed in units of joules or calories.
Please describe this picture using directional terminology, body planes and body movements.
Answers
The human body is a complex organism and understanding its structure and functions requires a thorough knowledge of directional terminology, body planes, and body movements. In this image, we can see a person performing a side plank exercise which is an effective core-strengthening exercise.
We can also use directional terminology to describe the person's movements. The person is performing a lateral flexion to the side while maintaining an isometric contraction of the core muscles. The movement involves the transverse axis of the body, which runs from front to back, perpendicular to the frontal plane.
In conclusion, this picture shows a person performing a side plank exercise, positioned on the frontal plane and performing a lateral flexion movement. The person is using their core muscles to maintain the position while one arm is supporting their weight and the other arm is extended towards the ceiling.
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which structures do eukaryotic cells have for performing specific functions
Answers
Answer:
organeles
Explanation:
organeles are small organ like structures in a cell that carry out their each specific jop or function in their own uniqe way
How does food storage and digestion take place in an amoeba?
Answers
Food storage and digestion take place in an amoeba occur through food vacuoles.
Amoeba is a monocellular organism that shows holozoic nutrition. It absorbs nutrients and food from the surroundings by contracting the vacuole. It has pseudopodia a drizzle-like structure that moves food into the vacuole. Inside this vacuole, there are lysosomes that contain the hydrolytic enzymes. These enzymes perform the breakdown of food particles. The digested food is then directly absorbed through the cytoplasm. This is circulated to organelles and stored for energy. After assimilation, the undigested food and waste are excreted out by fusing of food vacuole with the cell membrane.
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Answer:
Explanation:Amoebas are single-celled organisms that belong to group protozoa.Food storage and digestion occur through process called phagocytosis. Due the presence of flexible membrane,they can change their shape,viz essential for their feeding mechanism.
Psuedopods are temporary projections of its cell membrane which is extended when it encounters a food particle. These pseudopods surround the food particle forming a small cavity called food vacoule.
Once the food particle is enclosed within the food vacuole, the membrane of the vacuole fuses and forms a (digestive vacuole)phagosome which contains the food particle and digestive enzymes. The digestive enzymes in phagosome breakdown the food particle into smaller molecules. The enzymes include proteases for protein digestion, carbohydrases for carbohydrate digestion, and lipases for lipid digestion.
Smaller molecules are gradually absorbed into the cytoplasm of the amoeba, where they can be utilized for various metabolic processes. The digestion products are transported across the membrane of the digestive vacuole into the cytoplasm through diffusion.
Any undigested or indigestible material is eventually expelled from the amoeba's body by process of exocytosis. During exocytosis, the residual waste material is packaged into a vesicle and then released outside the cell.
Food storage and digestion in amoebas involve
1: the engulfment of food particles through phagocytosis,
2: the formation of digestive vacuoles,
3: enzymatic breakdown of the food,
4:absorption of nutrients into the cytoplasm,
5: and elimination of waste materials through exocytosis.
What sentence best supports the staternent that hormones are involved in the regulation of homeostasas? The hormone melatonin induces sleep and its production is slowed by exposure to light. The hormone cortisol suppresses the immune system and is produced when the body is under stress. The hormone oxytocin promotes labor contractions of the uterus during childbirth. The hormone erythropoeitin increases the production of red blood cells when oxygen levels are low.
Answers
The sentence that supports the statement that hormones are involved in the regulation of homeostasis is: The hormone erythropoietin increases the production of red blood cells when oxygen levels are low.
Homeostasis is the condition of maintaining the adequate conditions inside the living body that are most suitable for its survival. It is the state of steady internal, physical, and chemical conditions. The correct temperature, adequate oxygen concentrations, adequate fluids inside the body are the examples of homeostasis.
Erythropoietin is the hormone produced by the kidney cells that enhances the production of RBCs in the body. This in turn enhances the oxygen concentration inside the body.
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How do blood glucose levels increase in the body?
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What is true about apocrine sweat glands? a. They are distributed all over the body. b. They are important in temperature regulation. c. They are located predominantly in axillary and genital areas. d. They produce clear perspiration consisting primarily of water and salt.
Answers
The true statement about apocrine sweat glands is c. They are located predominantly in axillary and genital areas.
Apocrine sweat glands are a type of sweat gland that is larger than eccrine sweat glands and is mainly found in the axillary and genital areas, as well as in the nipples and ears. They become active at puberty and are responsible for producing a thick, milky sweat that is odorless but can become malodorous due to the presence of bacteria on the skin.
Unlike eccrine sweat glands, apocrine sweat glands are not involved in temperature regulation. They are instead believed to play a role in pheromone production and may also have antimicrobial properties.
Therefore, the correct option is c. They are located predominantly in axillary and genital areas.
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What is a producer? What is a consumer? What is a primary consumer?
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Answer: ▶Producer:an organism that produces. (makes) its own food.
▶ Consumer:animals that get their energy by eating plants or other animals.
▶Primary Consumer:Animals that consume only plant matter.
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Explanation:
5. What is the potential difference if a resistance of 25 ohms produces a
current of 250 amperes?
Answers
Voltage (v) = 250 V
Resistance (R) = 25 Ω,
Determine current (I) =?
We know that from ohm's law
V = I R
I = V/R
I = 250 / 25
I = 10 A
Current in the circuit is 10 Amps
what's the answer to this?
Answers
The conclusion that can be reached from the table is this: For a large number of offspring, there should be a ratio close to 9:3:3:1 of round-seed planta with green pods: wrinkled-seed plants with green pods: round-seed plants with yellow pods: wrinkled-seed plants with yellow pods because this is the expected ratio with an independent assortment of dominant and recessive alleles.
How to reach the conclusionTo reach the conclusion we note the crossings and the ratio produced from the different combinations. First, we notice a 9:3:3:1 of the varying shapes and types of seeds.
This result is expected of an independent assortment of alleles. The crossings from the parents give an idea of what is to be expected of the offspring.
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9. Which of the following shows the correct sequence of the cell cycle
And 8,9,10 answers in the photo
Answers
Answer: 8b, 9c, 10a
Explanation:
not too sure about 8 but i think other 2 are correct
what is synergy in a team?
Answers
Synergy is Greek for "to cooperate" or "to work together." Synergy's main goal is to facilitate your collaboration, connection, and communication with partners from other fields.
Synergy is the process through which people or organisations pool their resources and work together to produce greater output, effectiveness, and performance than they could alone. The finest illustration of this is a merger or purchase, when the new business will be more valuable than the merging of the two businesses. Business mergers, integrating or developing complementary product lines, and forming cross-disciplinary work groups are a few examples of synergy in the business sector.
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Bshehe svevsbehxuebxhebxhebdbdb
Answers
Answer:
hi
Explanation:
I can't understand your question
Answer:
what is it that you are asking
Explanation:
All atoms of the same element must have the same number of
protons
080
neutrons.
compounds.
electrons
Answers
Answer:
protons..................
Answer:
Protons
Explanation:
Got it right on Edge2020
Red, Green and Brown Seaweed are examples of multicellular protists.
True
False
Answers
Explanation: sorry if I’m wrong
Steps of the scientific method. I don’t understand!!!
Answers
2. background research
3. hypothesis
4. controlled experiment
5. data analysis
6. data collection
7. conclusion
Describe the structure and function of the parts of a eukaryotic chromosome. Describe the adaptive significance of organizing genes into chromosomes.
How does the function and structure of the chromosome differ in prokaryotes?
Answers
The structure of a eukaryotic chromosome consists of DNA wrapped around histone proteins to form nucleosomes, which are then further coiled and packed into higher-order structures.
Chromosomes contain important genetic information in the form of genes that are responsible for various functions. Organizing genes into chromosomes helps to ensure proper segregation of genetic material during cell division and increases the efficiency of genetic recombination. In prokaryotes, the chromosome is typically a single, circular molecule of DNA that is not associated with histones, and the genes are arranged in an operon structure that allows for coordinated gene expression.
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The _________________ are new substances that are created following a chemical reaction.
Group of answer choices
products
reactants
coefficient
chemical reaction
Answers
Answer:
products
Explanation:
reactants combine to produce products in a chemical reaction
Answer:
reactants is the answer
Lipids are hydrocarbons. What does that mean?
Answers
Answer:
a compound of hydrogen and carbon, such as any of those which are the chief components of petroleum and natural gas.
Explanation:
Answer:
Lipids include a diverse group of compounds that are largely nonpolar in nature. This is because they are hydrocarbons that include mostly nonpolar carbon–carbon or carbon–hydrogen bonds.