Answers
Answer:
B In space
because light moves faster where there is no gravity
Related Questions
the model illustrates a process by which a substance is taken up by a cell.
Answers
endocytosis is a process by which a substance is taken up by a cell. this is also known as phagocytosis at which cell engulf the large particles.
Small molecules are moved through the phospholipid bilayer by carrier and channel proteins, which were covered in the section before. Through a special process known as endocytosis, eukaryotic cells may also take up macromolecules and other small particles from the surrounding medium. Endocytosis is the process by which a region of the plasma membrane that surrounds the substance to be internalised buds off inside the cell to create a vesicle containing the substance. Christian deDuve invented the word "endocytosis" in 1963 to describe both the intake of fluids or macromolecules in small vesicles as well as the digestion of big particles (like bacteria). Pinocytosis (eating of cells) and phagocytosis (eating of cells) are the two terms used to describe these processes, respectively (cell drinking).
The model illustrates a process by which a substance is taken up by a cell.Which statements describe the process?
A. The model shows the process of endocytosis.
B. The process shown in the model requires energy from the cell.
C. The cell membrane in the model remains intact throughout the process.
D. The model shows the process of facilitated diffusion.
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Seafloor spreading is taking place in the middle of the Atlantic Ocean.
Here the plates are......
Moving Past each other
Moving Towards each other
Moving away from each other
Crashing into each other
Answers
Answer:
Moving away from each other
Explanation:
A population of lizards with two common phenotypes for color is introduced into an environment. One phenotype is brown and the other is green. Throughout the year, the environment has a combination of green grassy areas and areas of brown soil without plants. Hawks and coyotes hunt the lizards for food. If the environment remains stable, what is likely to happen and why?
A. The green phenotype is likely to become more common because green lizards will have less competition for resources.
B. The brown phenotype is likely to become more common because brown lizards will be less likely to survive predation.
C. Both phenotypes are likely to remain common because they will be equally likely to survive and reproduce.
D. Both phenotypes are likely to become less common because they blend in with and can hide in their environment.
Answers
Answer:
Explanation:
I think the answer must be D
Stem cells renew tissues but are all lost in childhood.a) trueb) false
Answers
Answer:
False
Explanation:
Stem cells are different type of cells in human body that can develop into different other body cells like muscles cells or brain cells and they gave the capability to renew themselves through mitotic cell division.
Stem cells are not lost in childhood but can be use to treat diseases or infection, it can be use to grow new cells and replace damaged body cells.
One of the challenges facing the world today is supplying enough food for the human population. Farming with genetically modified plants is a possible solution to this challenge. What is a concern with using GM plants?
A. Farming with GM plants that are resistant to chemical herbicides may lead to overuse of weed-killing compounds.
B. Farming with GM plants requires less land and energy, which may lead to lower food costs and an economic crisis for farmers.
C. GM plants require more insecticide use, which may increase the chance of chemical residues in the food supply.
D. Scientific studies on GM plants are not available so the effects of GM plants are unknown.
Answers
Answer:
Option A
Farming with GM plants that are resistant to chemical herbicides may lead to overuse of weed-killing compounds.
In pigs a curly tail (T) is dominant to a straight tail (t). Also, pink body(B) is dominant to a grey body(b). Show a cross between a homozygous dominant curly tailed, homozygous dominant pink pig and a heterozygous curly tailed , heterozygous pink pig. What is the 1st and 2nd pigs genotype?
Answers
Answer:ANSWER OF GIVEN QUESTION
Explanation:
Question 9 (1 point)
The producers that live in the abyssal zone are chemosynthetic because this zone has no what
Answers
Answer:
No sunlight penetrates the Abyssal zone.
Explanation:
I did this on my study guide a while back and got an A for it.
Which of the following events happens during Transcription?
1. a mRNA strand is created using the code in DNA
2. a new DNA strand is created from the amino acid sequence
3. a sequence of amino acids is made
4. a new ribosome is created
Please Help.
Answers
Answer:A is the answer
Explanation:
The following events happen during Transcription - 1. an mRNA strand is created using the code in DNA
TranscriptionIt is the first step or stage of the process called central dogma or protein synthesis. It is called transcription as the genetic information encoded in the DNA sequence is transcribed into mRNA sequence.
The process of transcription is the formation of the mRNA from the DNA with the help of the enzyme RNA polymerase. It is carried out in three stages:
InitiationElongationTerminationLearn more about transcription:
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Recently there has been a decline in the abundance of life on coral reefs. Scientists are unsure why, but one of the explanations for it is that global temperatures are increasing, making water temperatures rise. These small changes are killing off some of the smallest animals on the reef, which then affects the entire food chain. Which of the following would NOT help protect the diversity of the coral reef?
a: creating coral reefs in cooler waters ?
b: limit fishing around reefs
c : ban places of anchors in reef
d: ban cities into discarding sewage into coral reefs
Answers
Limit fishing around reefs would not help to protect the diversity of coral reefs.
What are coral reefs?Coral reefs are among the world's most diversified ecosystem and an underwater habitat that is characterized by corals that construct reefs.
Coral polyps, the invertebrates responsible for reef formation, come in a variety of shapes and sizes, including vast reef-building colonies, graceful flowing fans, and even small, solitary species.
Coral polyp colonies are bound together by calcium carbonate to build reefs.
According to UNESCO, if we continue to generate greenhouse gases at current levels, the coral reefs in all 29 reef-containing World Heritage sites would be extinct by the end of this century.
The Paris Agreement's goal of keeping global average temperature far below 2°C above pre-industrial levels is the only way for coral reefs to survive.
Hence the correct option is B.
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This system provides energy from food
A( Circulatory
B( Endocrine
C( Digestive
D) Lymphatic
Answers
Answer:
the digestive system
Explanation:
Write a 500-word research report on a pathogenic bacterium that is not discussed in this unit (you may choose one from the table in the pathogenic bacteria section of the Eubacteria lesson). Include the history, the scientific name of the bacterium, vectors, symptoms, etc.
Answers
We can see here that in order to write a research report on a pathogenic bacterium, here is a guide:
Carry out research on the pathogenic bacterium both online and offline.Your research should actually contain an information in the introduction section which introduces the bacterium.Then you move to given background details.What is a research report?The findings of a study or investigation carried out by researchers are presented in a formal document known as a research report.
Remember to include the following in your report:
the history, the scientific name of the bacterium, vectors, symptoms, etc.In academic and scientific settings, research reports are frequently used to convey research findings to other academics, researchers, and industry professionals.
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(50 Points!) A. What is this an image of?
B. Identify the three autotrophs and explain why they are an autotroph.
C. Identify one animal that is a primary and secondary consumer.
Answers
The image is a food energy pyramid, three autotrophs may be trees, grasses, and algae and one primary consumer is an herbivore while a secondary consumer is a carnivore animal that eats herbivores.
What is a food energy pyramid?A food energy pyramid is a type of representation that indicates the relationships between trophic levels and the flow of energy between organisms in a given ecosystem.
Therefore, with this data, we can see that a food energy pyramid is a representation of the type of association between species and organisms in an ecosystem.
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In a population of 13 Bio 1 lab students, p = 0.146, how many more students must complete their eval for the p allele to become fixed?
Answers
In a population, 12 Students must complete their eval for the p allele to become fixed.
To determine how many more students must complete their evaluation for the p allele to become fixed, we need to calculate the frequency of the p allele in the current population. We can do this using the formula:
p = number of p alleles / total number of alleles
Since we are dealing with a diploid organism, each individual has two alleles, so the total number of alleles in the population is 26 (13 students x 2 alleles per student). If p = 0.146, then the number of p alleles in the population is:
number of p alleles = p x total number of alleles
number of p alleles = 0.146 x 26
number of p alleles = 3.796
We can't have a fraction of an allele, so we round up to 4 p alleles in the population. To calculate how many more students must complete their evaluation for the p allele to become fixed, we need to consider that fixation occurs when the frequency of one allele is 1 (or 100%). Since there are only two alleles in this population (let's call the other allele q), the frequency of q is:
q = 1 - p
q = 1 - 0.146
q = 0.854
So, if the p allele is to become fixed, all individuals in the population must have the p allele. Currently, there are 4 p alleles in the population, which means there are 22 q alleles (since there are 26 total alleles). Each student has two alleles, so there are still 11 students whose allele frequencies are unknown. To calculate how many more students must have the p allele for it to become fixed, we need to calculate the number of q alleles that remain:
number of q alleles = q x total number of alleles
number of q alleles = 0.854 x 26
number of q alleles = 22.204
Again, we can't have a fraction of an allele, so we round up to 23 q alleles. This means that at least 12 students (since each student has two alleles) must have the p allele for it to become fixed, which will result in a p frequency of 1 (or 100%) and a q frequency of 0.
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There are three sources of genetic variation in sexual reproduction. Determine which of the following statements accurately describes which of these are considered random and which are not
Answers
Genetic recombination and independent assortment are considered random sources of genetic variation, while mutations can occur randomly or due to specific factors.
In sexual reproduction, the three sources of genetic variation are genetic recombination, independent assortment, and random mutations. Among these sources, genetic recombination and independent assortment are considered random processes, while mutations are not entirely random.Genetic recombination occurs during meiosis when homologous chromosomes exchange genetic material through crossing over. This process is considered random as the precise locations where recombination events occur are unpredictable.Independent assortment refers to the random alignment and separation of homologous chromosomes during meiosis I. The random positioning of maternal and paternal chromosomes contributes to genetic diversity in offspring.On the other hand, mutations are not entirely random as they can be influenced by various factors such as exposure to mutagens or errors in DNA replication. However, the specific mutations that occur at particular loci are generally considered random events.Therefore, the accurate statement would be that genetic recombination and independent assortment are considered random sources of genetic variation, while mutations are influenced by both random and non-random factors.For more such questions on Genetic variation:
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Write a hypothesis about the effect of dry conditions on earthworm behavior. Use the "if... then. because..."format, and be sure to answer the lesson question, "How is earthworm behavior affected by external stimuli?"
Answers
If earthworms are exposed to dry conditions, then they will become more active and surface more frequently because they will be seeking moisture to prevent dehydration.
A hypothesis on the effect of dry conditions on earthworm behaviorThis hypothesis addresses the lesson question of how external stimuli, in this case, dry conditions, affect earthworm behavior. It predicts that the earthworms will respond to the dry conditions by changing their behavior in order to survive.
By surfacing more frequently, the earthworms will increase their chances of finding moisture and avoiding dehydration.
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WILL GIVE BRAINLIEST
If a person's blood pressure decreases, receptors in the blood vessels send a message to the brain, which in turn causes the heart rate to increase and the blood vessels to decrease in diameter.
1. What type of feedback mechanism this is, positive or negative. Explain your answer.
2. If this feedback mechanism is too effective and increases blood pressure higher than the set point, predict what must happen to help maintain homeostasis.
3. A hemorrhage, or excessive bleeding, leads to a drastic decrease in blood pressure, which, in turn, leads to a decrease in flow in coronary arteries. This decreased flow leads to decreased contraction of the ventricles of the heart, which leads to decreased cardiac output and further decreased blood pressure. What type of feedback loop this is. Explain your answer.
Answers
Homeostasis is the capacity of the organism to keep internal systems at equilibrium. 1) Negative feedback. 2) Negative feedback to counter the blood pressure increase. 3) Possitive feedback.
When talking about homeostasis, we are referring to the organism's capacity to keep the body in constant internal equilibrium, even when the external environment is oscillating.
Homeostasis is critical to keep the correct internal functioning of the body.
Functions like blood pressure, body temperature, respiratory rate, and blood glucose levels, among others, are kept in a restricted range around a reference point, even though external conditions may be changing.
1. Negative feedbackBody systems homeostatically controlled are kept constant by negative feedback.
Any change that might occur in the internal functioning will be countered by negative feedback.
Negative feedback needs receptors, central control, and effectors.
In the exposed example,
Receptors are in vessels and they detect a decrease -or increase- in blood pressure.The central control is the SNC, the medulla oblongata. When it receives information about the blood pressure decrease, it sends signals to produce changes that correct that deviation and bring the internal conditions back to the normal range.Effectors are muscles, organs, and other structures that modify their function to correct the deviation. The heart muscle increases the heart rate, and the vessels muscles decrease the diameter.2. Increases in blood pressure higher than the set point The receptors in the blood vessel walls detect the increase in blood pressure,The receptors send a message to the medulla oblongata,
The medulla oblongata sends messages to effectors ⇒ the heart and blood vessels.
The heart rate decreases and the blood vessels increase in diameter.
The blood pressure drops to a value within the range around the reference value.
This is a negative feedback opposite to the first one.
3. Possitive feedbackPositive feedback is opposite to negative feedbackIt is a process by which the body detects a change, and activates mechanisms that accelerate that change, instead of countering it. Depending on the scenario, positive feedback can also help homeostasis. However, in many cases it produces the opposite effects and can turn into life-threatening.When an individual is suffering from a hemorrhage, a cascade of events occurs. There is constant blood loss and blood pressure decrease, which carries the consequent negative effects, such as the decrease in the capacity of ventricle contraction, and the decrease in the cardiac output.
A severe hemorrhage might lead to a quick death.
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A scientist is trying to determine how closely related a moth species is to four other moth species. He examined the DNA of each species and compared it to the study subject. He then created this table
Answers
Answer:
It is B
Explanation:
Species B
Answer:
its b
Explanation:
8. Where can DNA be found in a eukaryotic cell?
cytoplasm
ribosomes
nucleus
Rough E.R.
Answers
Answer:
I believe the answer is ribosome
Explanation:
Hope this helps :)
Answer:
The answer I think is
Explanation:
Nucleus
Which five statements about hemoglobin and myoglobin structure are true? Each hemoglobin molecule can bind four oxygen molecules, and each myoglobin can bind only one oxygen molecule. Molecular oxygen binds irreversibly to Fe2+ in heme. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent a change in the oxidation state of the iron ion. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron ion. Heme is composed of an organic protoporphyrin component and a metal ion. Each iron ion can form six coordination bonds: One of these bonds is formed between iron and oxygen. Hemoglobin and myoglobin are heterotetramers.
Answers
Answer:
The correct statement about the hemoglobin and myoglobin is as follows:
1. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind only one oxygen molecule.
3. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron.
4. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron atom.
5. Heme is composed of an organic protoporphyrin component and a metal atom.
6. Each iron atom can form six coordination bonds: One of these bonds is formed between iron and oxygen.
The variety of organisms within an ecosystem is characteristic of which type of diversity? Genetic diversity b. Ecosystem diversity C. Species diversity d. Regional diversity.
Answers
Answer: c.Species diversity
Explanation: 2020 edge and the other persons is wrong!
Answer: c.Species diversity
Explanation: 2020 edge and the other persons is wrong!
Many of the DD-amino acids found in nature have been discovered in bacterially produced peptides that have antibiotic properties.
a. True
b. False
Answers
Answer:
True
Explanation:
Most the amino acid are of L configuration. Antimicrobial peptides consists of D amino acids (D amino acid occur naturally). D amino acids are also found in walls of microorganism. Antimicrobial peptides is released by species including bacteria, fungi etc.
For example - Bacteriocin, peptaibols, plectasin etc.
Hence the given statement is true
What does the principle of faunal succession state?
O Fossils are deposited in approximately horizontal layers and spread out until they reach a barrier.
O Specific groups of organisms have followed one another in a definite sequence through the Earth's history.
• Absolute dating is required to determine the relative age of animals based on their fossils.
• Rock layers with the same unique grouping of fossils are of the same geologic age.
Answers
Answer:
b. Specific groups of organisms have followed one another in a definite sequence through the Earth's history.
Explanation:
The principle of faunal succession states that specific groups of organisms have followed one another in a definite sequence through the Earth's history. This principle is based on the observation that fossilized remains of different organisms are found in different layers of rock and that the layers can be dated and correlated to specific time periods. By comparing the fossils found in different rock layers, geologists and paleontologists can reconstruct the evolutionary history of life on Earth and the changes that have occurred in different environments over time.
what best describes the process of science?
Answers
Answer:
The process of science refers to the practices employed in science to uncover knowledge and interpret the meaning of those discoveries.
Decide the outcome of the hypothetical situation by dragging the label into the appropriate category Increase Would tissue damage increase or decrease if the epidermis of the skin was composed of nonkeratinized tissue? Would elasticity of the ears increase or decrease f the elastic cartilage was replaced with bone?
Would texibiliny of the intervertebral dises increase or decrease if the ibrocartlage was replaced with elastic cartilage?
Would diffusion rates of oxygen increase or decrease if the alveolar Ining of the lungs was made of stratified epithelum?
Would involuntary control of digestive motity increase or decrease if the intestines contained skeletal muscle? Decrease
Would the rate of infection increase or decrease i the epidermis was composed of pseudostratifed epithelium?
Would the vascularity of ligaments increase or decrease if they were made of bone?
Would protection of the brain increase or decrease the soงเ was made of hyaline cartilage?
Answers
Answer:
Would tissue damage increase or decrease if the epidermis of the skin is composed of non-keratinized tissue? Yes, since keratin is considered to be responsible for confining a little more stiffness to the tissue and structure, would the elasticity of the ears increase or decrease if the elastic cartilage were replaced by bone? It would decrease, elastic cartilage has more elasticity than bone tissue.
Would the texibily and intervertebral diseases increase or decrease if the ibrocartlage were replaced by elastic cartilage? It would decrease.
Would oxygen diffusion rates increase or decrease if the alveolar interior of the lungs were made up of stratified epithelium? They would decrease, since the epithelia have different shapes according to their function, the cylindrical epithelia are those specialized in absorption and exchange of molecular or chemical substances, the stratified ones with abundant stratum corneum function as barriers, either for protection or compartmental such as the epidermis. , therefore, the passage of oxygen will be less when facing the corneal barrier.
Would involuntary control of digestive motility increase or decrease if the intestines contained skeletal muscle? They would decrease, since it would become a voluntary function, and not an involuntary automatic physiological one.
Would the infection rate increase or decrease if the epidermis was composed of pseudostratified epithelium? It would increase, because the epidermis must have the corneal barrier in order to protect our organism and thus hinder the passage of pathogens into the organism, the function of the epidermis is to comply with the highly keratinized barrier of the stratum corneum.
Would the vascularity of the ligaments increase or decrease if they were made of bone? It would decrease or increase depending on the type of bone, since the cancellous is highly vascularized and the laminar one is not. But if we consider that elasticity gives more movement and movement improves circulation and vascularization, so in general terms, this would decrease.
Would brain protection increase or decrease the way ง เ was made of hyaline cartilage? It would decrease, since hyaline cartilage is less resistant and less rigid than bone tissue, thus generating possible compressions of the central nervous system.
Explanation:
All questions were answered above, and justified according to medical knowledge.
in general what causes a sea breeze
Answers
Answer:
The difference in air density between the land and sea cause y the sun's heating.
Explanation:
The sea breeze circulation is composed of two opposing flows; one at the surface (called the sea breeze) and one aloft (which is a return flow)
aneuploidy can result due to which type of mutation(s
Answers
A major cause of aneuploidy is “chromosome instability.
Does aneuploidy cause mutation?Aneuploidy impairs the karyotype and thus the species, independent of mutation because it buys highly conserved teams of proteins that segregate, synthesize and repair chromosomes. Likewise, it destabilizes genes.
We conclude that the transition of stable diploid to rocky aneuploid cell species is the primary cause of preneoplastic and neoplastic genomic insecurity and of cancer and that mutations are secondary.
So we can conclude that Aneuploidy: Extra or absent chromosomes. Changes in a cell's genetic material are called mutations.
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Which brain region is believed to play a critical role in OCD?
anterior cortex
prefrontal cortex
orbitofrontal cortex
cingulate cortex
Answers
?
Hint
The flow of carbon and energy through a marine ecosystem is shown here. Analyze the movement of matter and energy in this
ecosystem. Assume that the zooplankton have 20 grams per square meter of carbon available to them. Which statements can reflect
the movement of energy and matter in this ecosystem? Select ALL that apply.
es
The top predator has less than 20 grams per square meter available to it.
The phytoplankton have more than 20 grams per square meter of carbon
availability.
The dissolved organic carbon (DOC) is contributed from multiple levels of
the food chain.
The loss of carbon due to respiration by the zooplankton is greater than 20
grams per square meter.
The zooplankton can increase its biomass and carbon availability by
harnessing energy directly from the sun.
Interdependence of Organisms
(SB5.b) Cycling Of Matter And Flow Of Energy
Scientific Calc
10 523801
A)
B)
C)
D)
E)
Regular Calc
Answers
Answer:
B
Explanation:
land-based ecosystems are forest ecosystems, grassland ecosystems, tundra ecosystems, and desert ecosystems.
Answer:
a b c
Explanation:
usatp
Cardiac muscle causes movement in the
Answers
Answer:
(look at explanation)
Explanation:
Cardiac muscle tissue works to keep your heart pumping through involuntary movements. This is one feature that differentiates it from skeletal muscle tissue, which you can control. It does this through specialized cells called pacemaker cells. These control the contractions of your heart.
Cardiac muscle causes movement in the heart.
What is Cardiac muscle?A cardiac muscle is the type of muscle found only in the heart. It is also called the myocardium.
The cardiac muscles are only located in the heart because they are made up of features that are specialized in pumping blood powerfully and efficiently. These features include:
they are involuntary and intrinsically controlled,they are striated,they are branched and single nucleated.Therefore, cardiac muscle causes movement in the heart.
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Drag the tiles to the correct boxes to complete the pairs.
Organisms compete for limited resources at many levels. Match each scenario to the type of competition it exhibits.
I'll mark brainliest!
Answers
Intraspecific direct:
all the gray wolves feed on the same type of preytwo male deers fight over a mateInterspecific, indirect:
A robin and a blue jay try to eat the same wormthe rise in one species of bird limits the nesting space for other speciesTypes of competitionCompetition is a type of interaction in which two or more organisms of the same or different species compete over common limited resources.
When the competition involves organisms of the same species, the competition is said to be direct or intraspecific.
On the other hand, if the competition for resources involves organisms of different species, the competition is said to be indirect or interspecific.
Thus, all gray wolves feeding on the same type of prey and two male deers fighting over a mate are examples of direct or intraspecific competition. In the same vein, a robin and a blue jay trying to eat the same worm and the rise in one species of bird limiting the nesting space for other species are examples of indirect or interspecific competition.
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