A coral reef would become algal if grazers are removed. Urchins, crabs, parrot fish and tangs are all dominant on grazers.
A computer simulation is created to measure the impact of carpooling, creating a bus service and building a light rail system on the average commuting time for people in a small city. What would be an explanation for why the simulation would suggest that light rail would reduce commuting times most dramatically?
Trains carry more passengers reducing traffic on the roads.
Marissa is testing a hypothesis through experimentation. She believes that immersing ocean coral in carbonic acid will slow the coral’s growth. Which of these actions will prevent Marissa from introducing confounding variables into her experiment?
She releases cement particles into a random number of the coral samples.
She uses three different types of coral to establish her dependent variables.
She treats the coral samples identically with varying levels of carbonic acid.
She obtains her coral samples from coral reefs surrounding different continents.
Answer:
C. She treats the coral samples identically with varying levels of carbonic acid.
Explanation:
She releases cement particles into a random number of the coral samples.
Doing this is uncontrolled, using a random number for anything in an experiment is a no no.
She uses three different types of coral to establish her dependent variables.
Different types of coral could react differently to the acid, always use only one dependent variable in an experiment.
She obtains her coral samples from coral reefs surrounding different continents.
It is important that the samples of coral be as close to the same as possible so that the coral variables stay constant.
Answer:
C.
She treats the coral samples identically with varying levels of carbonic acid.
Explanation:
Which of these describes the most widely held scientific theory on what catastrophic events led to the Cretaceous–Tertiary extinction about 65.5 million years ago, which eventually led to the extinction of dinosaurs?
A heterozygous pea plant that is tallwith yellow seed?Ttyy is allowed to self-fertilize.What is the probability that an off spring will be eithertall with yellow seeds tall with green seeds, or dwarf with yellow seeds
This is a compound made up of carbon hydrogen and oxygen atoms it is used by cells to store and release energy sugars are made by chloroplast do this and consumed by mitochondria is through cell Respiration
The answer is; glucose
It is a 6 carbon ring simple sugar and is the most abundant monosaccharide in the body. Its levels in the body are referred to as blood sugars. Larger carbohydrates consumed in the diet are broken down to glucose utilized in respiration (Glycolysis and Krebs cycles) to produce the energy required by the cells. Plants, on the other hand, manufacture carbohydrates in photosynthesis.
The compound composed of carbon, hydrogen, and oxygen mentioned is glucose, which is critical in energy storage and release in cells. It's made by plants via photosynthesis and is then broken down and used for energy via cellular respiration in mitochondria, where it aids in the synthesis of ATP - the energy 'currency' of cells.
Explanation:The compound you're referring to, made up of carbon, hydrogen, and oxygen atoms, is called glucose. Glucose, with the formula C6H12O6, plays a pivotal role in energy storage and release in cells through a process known as cellular respiration.
During this process, energy is extracted from glucose, which is then used to synthesize a compound called adenosine triphosphate (ATP). ATP serves as the 'currency' of energy within cells, storing and delivering energy as required for various cellular functions.
Glucose is produced by plants through photosynthesis, a process in which they convert solar energy, carbon dioxide, and water into glucose and oxygen. The glucose produced is then used by the plant for its energy needs, with excess glucose being stored as starch.
When animals, including humans, consume plants, they catabolize, or break down, the starch back into glucose for their energy needs.
So, to summarize, glucose acts as a crucial intermediary in the transfer of energy from the sun to all living organisms, providing power for key cellular processes through its role in the synthesis and utilization of ATP.
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What process results in two complete strands of DNA from one original strand?
Final answer:
The process that results in two complete DNA strands from one original strand is called semiconservative replication. Each new DNA molecule contains one original and one new complementary strand, ensuring preservation of genetic information. At termination, two identical DNA double helices are formed.
Explanation:
DNA Replication Process
The process that results in two complete strands of DNA from one original strand is known as semiconservative replication. During this process, the original DNA helix unwinds, and each strand becomes a template for the synthesis of a new, complementary strand. Consequently, each of the resulting two DNA molecules comprises one original (parental) strand and one newly synthesized (daughter) strand. As elucidated by Arthur Kornberg's research with DNA polymerase, these new DNA molecules are identical to the original strand, with complementary base pairing ensuring the accuracy of replication. This ensures the genetic information is preserved and passed on during cell division.
The replication process passes through several stages. It starts with the initiation, where the DNA strands are separated. Following initiation, nucleotides align along each template strand according to base-pairing rules, a stage characterized by elongation. Finally, in the termination stage, once the new complementary strands are fully formed, DNA replication concludes, yielding two identical DNA double helices. Errors during replication are corrected through proofreading and repair processes, ensuring DNA's stability and integrity through generations of cells.
ATGC ATC isn't this substitution
Answer:
The correct answer would be a deletion mutation.
Deletion mutation is a type of mutation in which a sequence of DNA gets lost during the replication process.
The length of a lost sequence may vary from a single nucleotide to the entire length of a chromosome.
It can also be caused by errors during crossing over that takes place in meiosis I.
A deletion that does not occur in multiples of three nucleotides can result in frame-shift mutation.
Similarly, in the given sequence ATGC, guanine is deleted which results in the formation of a new reading frame that is, ATC.
Male sterility can result from excessively high temperatures around the testes. what adjustment is made to counteract the effects of high temperature?
The scrotum reacts to temperature. When it is cold, the scrotum shrinks, pulling the testes against the body to keep them warm. When it is hot, the scrotum relaxes, lowering the testes away from the body. This contractile ability of the scrotum can either raise or lower the temperature of the testes by a few degrees, ensuring that the optimum temperature for sperm production is maintained.
Which is an example of how stem cells are currently being used? for generating healthy cells to form replacement organs like brains for directing differentiation to treat diabetes and arthritis for testing for possible side effects of a new cancer medication for curing heart disease by regenerating damaged heart tissue
Curing heart disease by regenerating damaged heart tissue.
for curing heart disease by regenerating damaged heart tissue
Stem cells are commonly used for the tissue repair process and they have the potentials to develop into different cells type in the body during early life and growth. Thus, stem cells in many tissues can function as internal repair system by dividing essentially without limit to replenish other cells as long as the person or animal is still alive. Furthermore, they mediates diverse role in disease progression, development and tissue repair processes in host.
What is the aorta? A. a valve that prevents backflow of oxygenated blood into the heart B. the wall of thick cardiac muscle that separates the two ventricles C. a vein that carries deoxygenated blood from the heart to the lungs D. an artery that carries oxygenated blood from the heart to the body
D. Is the correct answer
Select all that apply. Select the features, plants, and animals that are characteristic of the coniferous forest biome.
A) warm, humid summers
B) largest land biome
C)extreme temperatures
D) little rainfall
E) hawks
F) cacti
G) pines
H) maples
I) deer
The features, plants, and animals that are characteristic of the coniferous forest biome.
A) warm, humid summers
C)extreme temperatures
D) little rainfall
E) hawks
G) pines
H) maples
I) deer
Answer: A) warm, humid summers
C)extreme temperatures
E) hawks
G) pines
I) deer
Explanation:
The coniferous forests are found in regions of Asia, Canada, and US. This biome exhibit hot summers and cool winters that means exhibit extreme temperatures. These regions receives heavy rainfall. They are dominated by the coniferous trees such as pines. Hawks lives in coniferous forests which have been found nesting the coniferous trees. Deer can be found in these biomes as one of the herbivorous species.
Why are cinder cones short-lived?
Usually the lava flows come towards the end of the eruption, once the magma has lost enough of its volatiles to flow more quietly. Cinder cone eruptions are comparatively short lived, and thus cinder cones are much smaller features than stratovolcanoes and shield volcanoes (usually no more than a mile at the base).
Cinder cones are short-lived because they erode quickly after formation due to their composition of light, loosely-packed materials. Additionally, their volcanic activity tends to decline rapidly after the initial eruption.
Explanation:Cinder cones, a type of volcano, are considered short-lived due to their geological lifespan. This is because cinder cones are formed through the rapid eruption of gases and volcanic ash which culminate into a cone shape. Over time, the materials of the cinder cone structure, being light and loosely packed, erode quickly, leading to the short-lived nature of cinder cones. They tend to cease an activity a billion years or more ago, as evidenced by the prevalence of impact craters found on them. However, it is notable that some volcanic features such as Olympus Mons may remain intermittently active today.
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Which natural cycle is affected the most by the use of fertilizers? A. oxygen cycle B. water cycle C. carbon cycle D. nitrogen cycle
The most logical option is Option D, the most affected cycle by the use of fertilizers would be the nitrogen cycle.
What creates global winds?
Air over the ocean.
An area of high pressure.
Differences in heating.
An area of low pressure.
Answer:
C
Explanation:
Answer:
C.: Differences in heating
Explanation:
Temperature controls the air movement.
Headlands are formed through wave deposition. true or false?
True , headlands are not formed through wave deposition.
What are headlands?A headland, also known as a head, is a coastal landform, a point of land usually high and often with a sheer drop, that extends into a body of water.
A headland of considerable size often is called a cape. Headlands are characterised by high, breaking waves, rocky shores, intense erosion, and steep sea cliff.
Headlands are formed when the sea attacks a section of coast with alternating horizontal bands of hard and soft rock.
Since a sea arch is formed through wave erosion.
Therefore, Headlands are formed by through wave deposition.
We can say Headlands are formed to wave deposition.
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An 8-year-old child is receiving moderate sedation for a medical procedure. the nurse is assessing the child's level of sedation. his gag reflex is intact, he's breathing comfortably on his own, and he opens his eyes on verbal request. the nurse recognizes that the child is:
Final answer:
The nurse has determined that the 8-year-old child is under conscious sedation due to an intact gag reflex, unassisted comfortable breathing, and the ability to open eyes on verbal command.
Explanation:
The nurse recognizes that the 8-year-old child receiving moderate sedation is in a state of conscious sedation. This assessment is based on the observation that the child's gag reflex is intact, he breathes comfortably without assistance, and he is able to respond coherently to verbal cues by opening his eyes. This level of sedation enables necessary medical procedures to be performed while the child remains relaxed and cooperative yet conscious enough to maintain airway reflexes and adequate respiratory function. It is crucial for healthcare professionals to monitor the level of sedation and ensure the patient's safety by verifying the patient's identity and procedure, assessing allergies, and preparing for any airway management or potential aspiration.
A population of rabbits live in a local forest. Some had a mutation for a Large Body and Long Legs. The graph below shows the number of both the mutant and the normal rabbits over 5 generations. Which of the following statements is true for this scenario?
Question 7 options:
The rabbits with the mutation were more successful with restricted food than the normal rabbits.
Both sets of rabbits were equally successful with the restricted food source.I
The normal rabbits were more successful with restricted food than the rabbits with the mutation.
The graph does not let us know which rabbit was more successful.
Do you know the answer?
Answer:the answer is A not thanks to the mf above me
or below
Explanation:
During translation a peptide bond forms between the R group of
a. the first amino acid and the carboxyl group of the second amino acid.
b. the central B-carbon of the first amino acid and the amino group of the second amino acid.
c. the amino group of the first amino acid and the R group of the second amino acid.
d. the carboxyl group of the first amino acid and the amino group of the second amino acid.
e. the amino group of the first amino acid and the carboxyl group of the second amino acid.
During translation, a peptide bond is formed between the amino group of the first amino acid and the carboxyl group of the second amino acid in the growing polypeptide chain.
Answer:
e. the amino group of the first amino acid and the carboxyl group of the second amino acid.
What molecule must be removed in order to rebuild ADP into ATP?
A. A water molecule
B. A ribose sugar
C. A phosphate molecule
Hewwoo :3
What molecule must be removed in order to rebuild ADP into ATP?
In order to answer your question, you must look at the chemical structures of ADP and ATP. ATP has an adenine that goes by 9' nitrogen to 1' carbon (ribose sugar). In turn, the 5' carbon is attached to a triphosphate molecule. You can see that there's no such thing as a water molecule there. Thus, a water molecule was presumably removed during chemiosmotic phosphorylation.
Answer: A. a water molecule
What is an important function of a giraffe's extremely long neck?
An important function of the giraffe's extremyly long neck is to be able to get to the leave on the top of trees. With a short neck they would not be able to get to the leaves.
hope this helps
What is the secondary meristem that produces wood toward the inside and bark toward the outside of a tree
Many organizations release indexes used to measure the development of the world's countries. As we learned in this lesson, these indexes measure many factors, from life expectancy to happiness. In your opinion, what are the three most important factors we can use to determine how developed a country might be? Explain your answers in a few sentences.
In my opinion, out of the many indexes about the development of a country, the three most reliable ones about the level of development would be the GDP nominal, the GDP per capita, and the human rights index.
The GDP nominal will show the overall welfare of the country, the sum of its economy, its production, the way it manages the finances, the progress or decline it is making.
The GDP per capita will show us the average income of the people in the country. So this index will provide us with information about how well the wealth in the country is distributed, are the people poor, middle class, or rich, and what they can or can not afford in their lives.
The human rights index is very important as it defines the basics of the daily lives and the rights that the people have. The more freedom the people have in their expression, the choices in life, their actions, the happier the people would be, and vice versa, the more restricted they are, the less happy would they be.
The nations with a developed economy, high-quality life, advanced research and technological infrastructures are called developed countries. They are rich in the service and industrial sectors.
GDP nominal, human rights index and the GDP per capita are the most important factors that can be used to determine how developed a country might be.
Factors of developed countries can be explained as:The overall welfare and the total of the economical essentials including the production of the goods, monetary management and its advancement are called nominal GDP.The average income of the country's citizens is called GDP per capita and it depicts the wealth and capital distribution among the people of the nation. It also tells about the economical class and the work distribution among the people.The fundamental rights of the resident of a country is represented by the human rights index. The individuals will be optimistic if they have more independence, rights and liberties to live peacefully and do their jobs.Therefore, GDP nominal, human rights index and the GDP per capita are the most important factors.
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Retina, Iris, Pupil, Cornea, Lens, etc. How do these eye parts function?
The functions of eyes parts are as follows:
Retina: The rays of light focused on the retina by the cornea and lens. The retina produces an image which is sent along the optic nerve of the brain.
Iris: It changes the size of pupil and allows different amount of life to enter the eyes.
Pupil: The light enters to the eyes through it.
Cornea: It forms the outer coating of the eyeball and covers the iris and pupil.
Lens:
Answer: grad-point answer: “it contracts and expands to control the amount of light that enters the eye” for iris
Explanation:
Plants use carbon dioxide to build organic molecules during the process of
a. combustion.
b. transpiration.
c. photosynthesis.
d. respiration.
The answer is C: Photosynthesis
This type of membrane transport moves substances against the concentration gradient from an area of low concentration to an area of high concentration using membrane protiens as carriers and requires the input of atp
Answer:- Active transport
Explanation:-
There are two types of membrane transports
1. Passive transport - this type of transport occurs without the input of any energy and the molecules move along the concentration gradients that is from high concetration to low concentration.
2. Active transport- this type of transport takes place to move the molecules against the concentration gradient that is from low concentration to high concentration.
The active transport is of two types:
1. Primary active transport- in this type of transport ATP is used as an energy source to move the substances against the concentration gradient.
2.Secondary active transport - in this type of transport the gradient formed by the active transport is utilized and it involves the movement of 2 substances at a time aross the membrane. That is the movement of one molecule is coupled to another.
So, the active transport is basically responsible for utilizing the energy from ATP and carrier proteins to move the substances across the membrane against their concentration gradient i.e. from low concentration to high concentration.
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1. State two pieces of evidence that support the idea that, "The forces that dictate ecological interactions are at play in ecosystems of all scales, from animal level to bacterial level."
2. Describe an investigation/expirment that explores a factor that could affect the rate of photosynthesis. What results would your investigation produce that supports your factor affecting the rate of photosynthesis?
3. You discover two geographically isolated populations of a species that have slight differences in color. List 3 specific, testable questions that you could design an investigation around to determine why the populations display these traits.
4. How can the 4 Key Ideas of Natural Selection be used to predict how species will evolve or how an ancestor species evolved into modern species?
5. Certain bird wings are developed to assist in long-distance flight. Consider an Albatross. These birds fly extremely long distances to hunt for food. What change in conditions could have forced the ancestor to an Albatross to develop this adaptation?
6. What are 5 lines of evidence that support common ancestry in modern species?
7. How could members of a sequence of fossils that show the development of a certain trait be found in vastly different areas around the world?
8. In Elephant seals, despite the fact that females prefer certain areas of the beach during mating season, they will reproduce with many males before returning to sea. What does that say about conditions driving sexual selection in males?
Answer: question 6
Explanation: Biogeography The fossil record, Embryology, similarity and vestigial structures, genetics and Observable evolution on small timescales.☺
Final answer:
The forces that dictate ecological interactions are at play in ecosystems of all scales, from animal level to bacterial level. An investigation could explore a factor affecting the rate of photosynthesis, such as light intensity. Possible reasons for slight color differences in geographically isolated populations can be determined through specific, testable questions. The 4 Key Ideas of Natural Selection can be used to predict how species will evolve. Conditions driving sexual selection in male Elephant seals include intense competition and a need to father as many offspring as possible.
Explanation:
1. two pieces of evidence that support the idea that the forces that dictate ecological interactions are at play in ecosystems of all scales, from animal level to bacterial level are:
Competition for resources: Both animals and bacteria compete for limited resources, such as food and habitat, which drives the ecological interactions at both levels. For example, animals in the same habitat may compete for the same food source, while bacteria in a culture may compete for the available nutrients.Energy flow: Ecological interactions at both animal and bacterial levels are governed by the flow of energy. Food chains and food webs are present at both scales, with energy being transferred from one organism to another. This energy flow forms the basis of ecological interactions, such as predation, parasitism, and symbiosis.2. An investigation that explores a factor affecting the rate of photosynthesis could involve varying the intensity of light. By exposing plants to different intensities of light and measuring the rate of oxygen production through photosynthesis, one could determine the effect of light intensity on photosynthesis. Increasing the light intensity would likely result in a higher rate of photosynthesis, as light is a necessary factor for this process.
3. Three specific, testable questions that could be designed to determine why geographically isolated populations of a species display slight color differences:
Does the difference in color between the populations affect their survival or reproductive success?Is there a difference in the genetic makeup or gene expression related to color between the populations?Does the difference in color between the populations provide them with a selective advantage in their respective environments?4. The 4 Key Ideas of Natural Selection can be used to predict how species will evolve or how an ancestor species evolved into modern species. These key ideas include variation within a population, struggle for existence, survival of the fittest, and inheritance of favorable traits. By understanding these ideas and studying the characteristics of a species or its ancestors, scientists can make predictions about the evolutionary paths and outcomes.
5. A change in conditions that could have forced the ancestor of an Albatross to develop wings for long-distance flight could be a decrease in the availability of food in their original habitat. If the ancestor species was no longer able to find enough food in its original habitat, it may have been driven to explore new areas in search of food. The development of wings and the ability to fly long distances would have been advantageous for covering larger areas and accessing new food sources.
6. Five lines of evidence that support common ancestry in modern species are:
Homologous structures: Similarities in anatomical structures, such as the forelimbs of mammals, suggest a common ancestor.Embryonic development: Similarities in the early stages of development among different species indicate common ancestry.Fossil record: Transitional fossils that show intermediate characteristics between different species provide evidence of common ancestry.DNA and genetic similarities: Comparing the DNA sequences and genetic makeup of different species can reveal similarities that suggest a shared ancestry.Biogeography: The distribution of species around the world can be explained by their common ancestry and how they have spread and diversified over time.7. Members of a sequence of fossils that show the development of a certain trait can be found in vastly different areas around the world due to continental drift and the movement of tectonic plates. Over millions of years, continents have shifted and separated, leading to the isolation of populations and the evolution of different traits in different locations.
8. The fact that Elephant seals reproduce with many males despite female preferences for certain areas of the beach during mating season suggests that conditions driving sexual selection in males are intense competition and a need to father as many offspring as possible. The males are likely competing with each other for mating opportunities and trying to ensure their genes are passed on, even if it means reproducing with multiple females.
Match the function to the correct part of the neuron.
- receives signal from other nutrients
- contains the nucleus and the cell organelles
- Protects and insulates the axon
- Conveys electrical signals across a long distance
- pasess electrical signals to another neuron
Plz put all of these in order for me fast!! Thanks!
Answer:
Neuron ( also called nerve cell) is considered as the fundamental unit of nervous system that is used to transmit nerve impulses throughout the body.
It is primarily composed of dendrites ( which receives signals from other neurons), cell body ( containing nucleus and the cell organelles) , axon ( that transmits electrical signals across a long distance and it protected by insulating myelin sheath), and axon terminal ( which release neurotransmitter, chemical messenger in the synapse).
Thus, correct answers for the question is-
1) receives signals from other neurons - Dendrites
2) contains the nucleus and the cell organelles- Cell body
3) protects and insulates the axon- Myelin sheath
4) conveys electrical signals across a long distance- Axon.
5) pasess electrical signals to another neuron- Axon terminal.
What piece of evidence would go against the argument and suggest that birds are actually different species
The birds have different mating seasons would answer the question whether the two bird species are actually the same species or just two different ones. The reason for this is that when two bird species have different mating seasons this actually tells us that they most likely don't mate with each other and for that reason it wouldn't be really possible for them to be one species.
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A population of pigs livess on an island together with burrowing termites . Pigs thatbhave the longest snouts tend to survive better over time most of the pig population is amde up of individuals that have very long snouts. This is an example of which type of selection
This is an example of directional selection. Basically, this happens when one extreme of the trait distribution experiences selection against it, such as choosing long snouts over short snouts.
Answer:
a
Explanation:
Hi! Please help! I think it is C but I am just making sure..
Which important indoor safety measure should be taken during a thunderstorm?
A) Lie on the floor.
B) Cover your head.
C) Go to the basement.
D) Move away from windows.
Answer:
The correct answer is option D) "Move away from windows".
Explanation:
One important indoor safety measure that should be taken during a thunderstorm is to move away from windows. Thunderstorms often are accompanied by storm lighting that travel near the speed of light. If the lighting hits a windows the speed could cause the windows to heat up and shatter. Therefore, it is better to move away from windows during thunderstorms to avoid possible injuries.