what's the structure for presynaptic
Answer:
nervous system
Explanation:
In photo:)
The diagram below represents an impulse pathway.
Nerve gas interferes with the action of an enzyme that breaks down acetylcholine. This process allows the acetylcholine to remain in a synapse almost indefinitely. At which location does this inhibiting effect of the nerve gas occur?
A) A
B) B
C) D
D) C
Answer:
Thanks
Explanation:
Answer is B
Explanation: it’s the neuron synapse it answers it in the question
What makes one animal more adapted than another?
1. It has acclimatized to its environment during its lifetime.
2. Its phenotype is better suited to its environment.
3. It is more fit, regardless of environment.
4. It will live longer than most other individuals.
Answer:
The answer is 2. its phenotype is better suited to its environment.
Explanation:
Adaptation is the process by which animals pass on genes that make their offspring increasingly better at surviving and reproducing in their given environment. and also I took the quiz.
Its phenotype is better suited to its environment," is generally the most significant factor. Therefore, option (2) is correct.
What is adaptation?Adaptation is a biological process by which a population of organisms becomes better suited to its environment over time. This process involves changes in an organism's behavioral, anatomical, or physiological traits that enable it to survive and reproduce in its environment.
Adaptations may be the result of natural selection, where certain traits that confer an advantage in the environment are passed on to offspring, leading to evolutionary changes in the population. Adaptations can be observed at different levels, from the molecular to the ecosystem, and they are crucial for the survival and success of species in their environments.
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Your skin is constantly producing new cells through cell division. How does this happen? During interphase, how does a cell prepare for division? Describe cell division, including the processes of mitosis and cytokinesis. Be sure to describe the mitotic steps.
Answer:
Answer:
Explanation:
Cell division is the process whereby a parent cell finish up into two daughter cells. they are two types of cell division
mitosismeiosismitosis is a process whereby a parent cell finish up and produces two daughter cells having the same number of chromosomes
stages of mitosis
Interphase: In this stage , nothing really happens in the cell, resting stage of the cellprophase: in this stage , the chromatins condenses into chromosomes, the nuclear membrane disappear and the spindle fibre radiates
metaphase: in this stage , the chromosomes align in the middle and meet at the equatoranaphase: the chromosomes split at the centromere and move to the opposite polestelophase: the cell splits, and the spindle fibre disappears cytokinesis: the cell produces two daughter cellswhat process does the urchin perform to obtain its energy
Answer:
The Purple Sea Urchin obtains oxygen through diffusion only the diffusion of oxygen into the organism. Also, oxygen diffuses from the canals into the rest of the body and carbon dioxide diffuses back into the canals to be released.
Explanation:
:)
The Purple Sea Urchin obtains oxygen through diffusion only the diffusion of oxygen into the organism. Also, oxygen diffuses from the canals into the rest of the body and carbon dioxide diffuses back into the canals to be released.
What is the best example of a hypothesis leading to new experimental methods?The best example of a hypothesis leading to new experimental methods as the Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.
The best example of a hypothesis leading to new experimental methods is that the Thomas Hunt Morgan continued the genetic research of Gregor Mendel, but Morgan used fruit flies.
Through Thomas Hunt Morgan's fruit fly experiments, he was able to discover and notice the inheritance of specific chromosomes. This experiment gave Mendel a great opportunity to publicize his idea of studying humans.
Therefore, The Purple Sea Urchin obtains oxygen through diffusion only the diffusion of oxygen into the organism. Also, oxygen diffuses from the canals into the rest of the body and carbon dioxide diffuses back into the canals to be released.
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WILL GIVE BRAINLY!! WILL REPORT RANDOM ANSWERS.
1. Which of the following was NOT a part of the summary on Darwin's Theory of Evolution?
Organisms produce more offspring than what can survive
Struggle for Existence - Organisms will compete for resources
Species that live today descended from a common ancestor, with modifications to their traits.
Adaptations are acquired through the use of those traits.
2. Which of the following is NOT one of the main points of Natural Selection?
Variation
Use and Disuse
Adaptation
Overproduction
3. Which type of evidence was Darwin' UNABLE to use, because of the time period, in which he lived? Check all answers that apply!
fossil record
biochemical evidence/ biochemistry
comparative embryology
anatomical structures - homologous/ analogous/ vestigial
Biogeography/ Geographic Distribution
Answer:
1adaptation are acquired through use of those traits (that was lamarck)
2 . use and disuse (that was lamarck)
3.biochemical evidence (the rest he would have been used, not completely but there would have been elements available there)
Explanation:
Why would plant cells become wilted in a concentrated sugar solution?
A:They lose water by osmosis
B:They are not receiving enough light
C:They lose water by active transport
D:They gain water by osmosis
please help me
Which statement best describes the role of lichens in ecological succession?
A. They replace smaller trees and shrubs that need less sunlight.
B. They add nutrients to the soil and hold the soil together with roots.
C. They release acids that help break down bare rock to form soil.
D. They use nitrogen from the air to make nutrients that plants can use.
Answer:
C. They release acids that help break down bare rock to form soil.
Explanation:
Quiz Verified
life expectancy have increased in many parts of the world. Why do you think fewer people are dying?
Answer:
The main reason why these people live to an advanced age is better medical care. But average life expectancy is also increasing because the rate of infant mortality has fallen across the world.
The more in depth answer is under the 'Explanation' part.
Explanation:
List of reasons for increased life expectancy in the United States.
-Healthcare.
-Sanitation.
-Nutrition.
-Working conditions.
Life expectancy has increased rapidly since the Age of Enlightenment. In the early 19th century, life expectancy started to increase in the early industrialized countries while it stayed low in the rest of the world. This led to a very high inequality in how health was distributed across the world. Good health in the rich countries and persistently bad health in those countries that remained poor. Over the last decades this global inequality decreased. No country in the world has a lower life expectancy than the countries with the highest life expectancy in 1800. Many countries that not long ago were suffering from bad health are catching up rapidly.Now Humans are living longer around the world. While there have been obvious ups and downs, life expectancy at birth overall has been steadily increasing for many years. It has more than doubled in the last two centuries. This increase was previously driven by reductions in infant mortality
Starfish are able to reproduce both sexually and asexually. In an area of the ocean that is gradually changing due to increasing temperatures, it is more advantageous for starfish to reproduce what because they will be able to what
blank 1: asexually or sexually
blank 2: better adapt or reproduce more quickly
PLS HURRY I'LL GIVE THE BRAINLEST
Answer:
Got the first one wrong
Explanation:
BIOLOGY STUDENTS, I NEED UR HELP.. Substances transported in the phloem are carried upwards in the stem at some time of the year and downwards at other times. Explain why substances are transported in the phloem upwards at one time of the year and downwards at another. *
What do you know about Restriction Enzymes?
Why do we use Restriction Enzymes?
When do we use Restriction Enzymes?
How can we edit bacterial genome?
Help!
Answer:
Explanation:
Restriction enzymes refer to enzymes that is produced by a bacteria which has the ability to cleaves DNA property to a specific restriction sequence site within the molecule.
Restriction enzyme is use to cut DNA into smaller fragments by preventing the replication of the phage DNA .
Restriction enzyme is use when there is infection or foreign materials that intrude into a bacterium,the bacterium uses it to defend itself against infections that might be cause by viruses, pathogens e.t.c.
Bacteria genome can be edited using CRISPR method. It is done with recombineering, which is a technique that uses phage recombination method to enhance homologous recombination of DNA fragments.
Describe coriolis effect
Answer: The Coriolis effect describes the pattern of deflection taken by objects not firmly connected to the ground as they travel long distances around Earth.
Explanation: It on googIe and hope it helps
Answer:
In physics, the Coriolis force is an inertial of fictitious force that acts on objects that are in motion within a frame of reference that rotates with respect to an inertial frame.
A list of living things in your home
Deciduous vegetation can play a large role in building design as a result of its ability to: a. increase interior lighting levels b. slow winter wind c. prevent winter sun from entering and overheating buildings d. reduce heat gain during summer months
Answer:
d. reduce heat gain during summer months
Explanation:
Deciduous plants (trees, shrubs, and herbaceous perennials) are those plants that lose all of their leaves for a certain part of the year.
Such types of plants are found in areas where there are cool winters and warm moist summers.
Deciduous vegetation can play a large role in building design as a result of its ability to reduce heat gain during the summer months.
Option d. is correct.
What is being used to carry the new gene into the bacterial cell?
A plasmid
A virus
A chromosome
A needle
Answer:
A plasmid
Explanation:
A plasmid is an extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently. -Wiki
What is the primary consumer in the following food chain, sun - tomato plant - tomato worm - wasp?
Answer:) Tomato Worm
Explanation:) The tomato worm is the primary consumer.
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In the future, do you think Earth’s continents will form another Pangea? How will the current 7 continents be arranged relative to each other?
Answer:
Yes I think that the continents will form another Pangea because the tectonic plates are always moving so in a million years it probably will make another Pangea. (It is just like a puzzle if you do a puzzle that you take the puzzle apart the puzzle pieces still fit together). HOPE THIS HELPS
Please mark me as brainlyest because I have never got it before and I help you
What are 3 bases of RNA called?
Answer: Three of the bases are adenine, cytosine, uracil.
Explanation:
The 3 bases of RNA are called adenine (A), cytosine (C), and guanine (G).
What are nitrogenous bases?Nitrogenous bases are organic compounds that contain nitrogen and form the building blocks of DNA and RNA. They are a key component of nucleotides, which are the basic units of nucleic acids (DNA and RNA). There are four types of nitrogenous bases in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, thymine is replaced by uracil (U).
Nitrogenous bases play a crucial role in genetic information storage and transfer. The specific sequence of nitrogenous bases determines the genetic code, which carries the information required to build proteins. The double helix structure of DNA is held together by the complementary base pairing between adenine and thymine, and between cytosine and guanine. These interactions are critical for maintaining the stability and accuracy of the genetic information.
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The water we drink now was the same water the dinosaurs drank. Discuss how the water cycle makes this statement accurate. Include different parts of the water cycle and what processes help move the water through each part.
Answer:
This is what I got for the answer, I do not know if this is right though.
Yes. The water on our Earth today is the same water that’s been here for nearly 5 billion years. Only a tiny bit of it has escaped out into space. As far as we know, new water hasn’t formed either.
That means there’s a very high chance the water in your glass is what thirsty dinosaurs were gulping about 65 million years ago.
It’s possible that you could drink the same water as a stegosaurus or a T-Rex because of the way water circulates around our planet. A dinosaur, you, and I are actually part of this water cycle, too.
As water on the surface of lakes, oceans, and rivers warms up, it travels into the sky as very tiny droplets, or vapor. When the water vapor gets colder, it turns back to liquid to help form clouds.
When the liquid gets so heavy it can’t stay in the atmosphere anymore, it falls, or “precipitates,” as rain, snow, sleet, hail, or, my favorite, graupel. Once the precipitation reaches the ground or lands in lakes, oceans, and rivers, the cycle continues.
You, a dinosaur, and I drink water, and eat foods that contain this water, too. It’s so refreshing to lap it up from my bowl. We get rid of some water as fluids or gases, such as the ones we let out when we breathe.investigates the water beneath Earth’s surface. He’s a geologist with Washington State University’s School of the Environment.
He said water also moves in ways we don’t always think about. Scientists have found water trapped in minerals deep within the Earth’s mantle and crust, he explained. This water is even older than dinosaurs. It doesn’t look like liquid water that’s in your glass, but it still made of the same stuff.
“We’ve realized there is a lot of water down there,” Keller said. “There’s as much water chemically speaking, more or less, as there is in the oceans. It’s just in a different form.”
Another place we find water from dinosaur days is in organic matter. When the dinosaurs died, their bodies broke down to become part of the Earth. Over time, some of this organic matter became shale, coal, and oil we use for fuel.
The water dinosaurs drank is in more than just the water we drink, minerals, and organic matter. It’s also what we use to shower, cook, and water plants for food.
Right now, Keller is visiting with fellow scientists at the Global Institute for Water Security in Saskatchewan, Canada. They are curious about how we’ll take care of our water for the future.
“Life as we know it – every cell in every plant and animal — is mostly water. To say it requires water is an understatement,” Keller said.
The water in your glass may be the same water dinosaurs drank, but it’s also the same water that’s going to keep life on our planet in the years to come.
Match the following terms:
______ 2. Amino acids A. triplets of tRNA
_____ 3. mRNA B. brings amino acids to the ribosome
______ 4. tRNA C. copies DNA code to take it from the nucleus to the ribosome
______ 5. Codons D. triplets of mRNA
______ 6. Anticodons E. another name for a protein
______ 7. Polypeptide F. building blocks of proteins
Answer:
Polypeptide F. building blocks of proteins
In a process of vegetative reproduction, a plant can use its body parts to reproduce offspring EXCEPT. Stem Leaves Root Seed
Explanation:
seed: they are used in sexual reproduction .
hope this will be helpful to you. if you find it useful plz mark my answer as brainlist plzzzz.
In the process of vegetative reproduction, a plant can use its own body parts to reproduce offspring except seeds. So, the correct option is (D).
What is Vegetative reproduction?
Vegetative reproduction is defined as any type of asexual reproduction in plants in which a new plant grows from a piece or cutting of the parent plant or specialized reproductive structures, which is called vegetative propagules.
New plants are obtained without seeds in asexual reproduction which is a type of asexual reproduction in which new plants are produced from roots, stems, leaves and buds. Since reproduction occurs through vegetative parts of the plant, it is known as vegetative propagation.
Seeds are not used by the plants for vegetative propagation as it is used in sexual method of reproduction.
Thus, in the process of vegetative reproduction, a plant can use its own body parts to reproduce offspring except seeds. So, the correct option is (D).
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Complete the following sentence.
In order to have a crop reliably bloom at a particular time to maintain a reliable schedule without having to manipulate
light exposure through artificial means, a grower will cultivate a day ____ variety of plant that will bloom in relation to
planting time alone.
Answer:
time
Explanation:
time I believe it's the answer
Answer: neutral
Explanation: just did it
Many freshwater plants have adapted to low carbon and light levels by adapting what feature?
Group of answer choices
Carnivorous plants
No need for carbon dioxide
Camouflage
Floating leaves
Answer:
The most common adaptation is the presence of lightweight internal packing cells, aerenchyma, but floating leaves and finely dissected leaves are also common. Aquatic plants can only grow in water or in soil that is frequently saturated with water. They are therefore a common component of wetlands.
What can be the outcome of a conclusion that has been verified various times?
Answer:
Positive
Explanation:
Sun → Grass → Grasshopper → rats → snakes → owls
With the above ecosystem, which animal(s) would be most affected if a large increase in the number of rats were to happen?
6: Salt is an ionic compound- what happens to the salt when it is dissolved in
water?
Read the following passage on Hox genes. Using the information presented, write a short passage to support the claim that many Hox genes are regulatory genes.
The genome of an organism can be many millions of base pairs long. Genes are regions of the chromosome that code for protein products. They are scattered throughout the chromosome with little logical reason for their placement. There is an exception to this disorder—Hox genes, which are a family of genes that produce transcription factors. Hox genes are found in most eukaryotes. They are clustered together in the genome and always found in a particular order. The genes are in the same order as the characteristics are found along the body axis in the organism itself. These genes specify segment placement, such as whether a segment will form part of the head, thorax, or abdomen. For example, Hox genes related to structures in the head of an organism are found first in the Hox cluster.
Hox genes have been studied in fruit flies. A cluster of 8 Hox genes are activated very early in development, laying out the segmented body plan of the head, thorax, and abdomen. There are very clear boundary lines of expression for each Hox gene. In fact, forcing embryonic Hox gene expression in a wrong part of the body can cause another region’s body parts to develop. Scientists created a fly that had legs where its antennae should be through induced Hox expression!
Answer:
hox genes are a subset of regulatory genes that encode transcription factors and they are important for embryonic development. they are activated by a cascade of regulatory genes and the proteins encoded by the early genes regulate expressions of later genes
Explanation:
The orderly arrangement and clear boundary lines of expression for each Hox gene suggest that many Hox genes are regulatory genes. Hox genes produce transcription factors that control the expression of other genes, regulating the developmental processes that determine segment placement and body plan.
Describe more about Hox genes ?The placement of Hox genes in a particular order along the chromosome is also indicative of their regulatory function. Hox genes are clustered together and in the same order as the body axis of the organism, suggesting that their arrangement is not random but rather a functional design.
Additionally, the ability to induce Hox gene expression in the wrong part of the body and cause the development of body parts from a different region of the organism further supports the regulatory role of Hox genes.
This shows that Hox genes have the ability to control the fate of cells and determine the formation of body structures. Therefore, it is clear that many Hox genes are regulatory genes that play a critical role in controlling the complex developmental processes of organisms.
Hox genes are also known for their role in evolutionary biology. Changes in the expression pattern or function of Hox genes can result in significant changes in body plan and morphology, leading to the development of new structures and functions.
For example, it is believed that the evolution of the arthropod body plan and the development of the jointed appendages in insects was due to changes in the expression of Hox genes. Similarly, changes in the Hox gene expression pattern have also been linked to the evolution of the vertebrate body plan and the development of the vertebrate limb.
Moreover, Hox genes have been linked to several human genetic disorders. Mutations in Hox genes can cause developmental abnormalities such as synpolydactyly, a condition where fingers and toes are fused together, or polydactyly, where there are extra fingers or toes. Mutations in Hox genes have also been associated with some forms of cancer, such as leukemia.
In summary, Hox genes are a family of regulatory genes that play a critical role in controlling the complex developmental processes of organisms. They are known for their role in determining segment placement and body plan and have been linked to evolutionary changes, developmental abnormalities, and some forms of cancer.
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4. Describe: Compare the final histogram to the initial histogram. How have the finches been
affected by abundant rain? Describe at least two changes that you notice
Answer:
Finch with shorter beaks increase in number and population of bigger beak finches decreases.
Explanation:
Yes, finches have been greatly affected by abundant rain because in abundant rainfall plants produce an large number and variety of seeds so large amount of food is available for the finches. Due to abundant rainfall, the finches with shorter beaks increase in population. This change greatly helps finches in finding of food so shorter beak finches increase in population due to abundant rainfall.
Which statement best describes the relationship between the bending of a ray of light and a black hole?
When light disappears, it causes a black hole to come into existence.
A ray of light has gravity that will cause a black hole to move toward it.
Gravity from a black hole will pull a ray of light and cause its path to change.
A black hole’s gravity can cause a ray of light to gain gravity and attract objects.
Answer:
number 2
Explanation:
Answer:
second option
Explanation: