Answer:
Explanation:
How the resting membrane potential is established in a neuron. ... Ions move down their gradients via channels, leading to a separation of charge that ... through brief, controlled changes in the permeability of their cell membrane to particular ... If you did this, you would measure an electrical potential difference, or voltage, ...
Membrane permeability is affected by temperature, the type of solute present, and the degree of cell hydration. Increasing the temperature makes the membrane more unstable and very fluid. Lowering the temperature slows the speed of the membrane.
Does the permeability change during the action potential?Action potentials, the main electrical signal produced by nerve cells, reflect changes in membrane permeability to specific ions.
The important point is that increasing Na + permeability causes more depolarization, resulting in the opening of more Na + channels and further depolarization of the membrane potential.
Membrane permeability to water and solute has been shown to depend on temperature, the osmotic pressure of the medium, the type of solute present, the degree of cell hydration, and the presence or absence of ice.
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What grade of beef is the most expensive?
______ means that the two members of the allele pair are the same.
A) Homozygous B) Heterozygous C) Codominant D) Dominant
E) Recessive
Answer: A because two of the same pairs are homologous
Answer:
A) Homozygous
Explanation:
Homo means same.
Hetero means different.
Science Work, Help Please!
2. C. A selectively permeable
membrane separates solutions A and B. The
concentration of water molecules in Solution
B is higher than that in Solution A. Describe
how the water molecules will move.
3. A. How is active
transport different from passive transport?
3. B. What are transport proteins?
3. C. Explain why transport proteins
require energy to function in active
transport.
Answer:
1. Water(solvent) molecules travel from A across the cell membrane / semi permeable membrane to B until the concentrations of A and B become equal.2. Active transport moves molecules and ions from lower concentration to higher concentration with the help of energy in the form of ATP. On the other hand, passive transport moves molecules and ions from a higher concentration to lower concentration without any energy.3. A transport protein is a protein that serves the function of moving other materials within an organism.
4. Active transport is the movement of materials through a cell membrane using cell membrane using cellular energy. ... transport proteins requires energy to function because it needs energy then passive transport that requires no energy at all.
Explanation:
Hope this helped I answered all of the questions.
What is a subunit vaccine made from?
Answer:
Subunit vaccines are composed of a part of the virus particle responsible for inducing protective immunity. A subunit vaccine produced by recombinant DNA techniques would provide an efficient and inexpensive alternative method for the control of this commercially important disease.
A skateboard manufacturing company has had problems with the wheels on its skateboards cracking and causing injuries. An engineer for the company knows of a material that he thinks will make the skateboards safer. What would be the best step for the engineer to take next?
He should publish a report about the innovation and its impact on public safety.
He should conduct tests using computer models to determine the safety impact.
He should immediately begin producing all skateboards with the new material.
He should convert production of half of the skateboards to use the new material.
Answer:
He should conduct tests using computer models to determine the safety impact.
Explanation:
The other ones either use the material without testing it to make sure it is safe first or publish a report without knowing it's impact on public safety
Would all of the reptiles in an area be considered a population? Explain.
All the reptiles which are living in an area can be considered as a population technically. Thus, the reptiles can be a population.
What is a Population?A population is any kind of complete group with at least one characteristic in common between different species. Populations are not just people or organisms. But, the populations may consist of, however are not limited to, people, animals, businesses, buildings, motor vehicles, farms, objects, or events.
Population data contains various types of influential details such as birth, death, demographic information such as the age, sex, annual income, occupation, language of the species in an ecosystem. The overall socio-economic, economic, political, cultural progress of a country is dependent upon the population data to a large extent.
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As larvae, echinoderms have bilateral symmetry? Yes or no ?
Answer:
no
Explanation:
Although both organisms have an exoskeleton, the covering of a arthropod is made of different
materials than the covering of a(n) ________.
Which best describes the animal that she is studying?
Alyssa listed some of the structures in an animal that she is
studying
O a mammal because it has a crop
a bird because it has a crop
O a bird because it has a four-chambered heart
a mammal because it has a four-chambered heart
Answer:
A mammal because it has a four chamber heart
Explanation:
Answer:
B. A bird because it has a crop
Explanation:
Took test on e d g e n
A human's breathing rate can be affected by
A. the level of carbon dioxide in the cells.
B. the level of oxygen in the blood.
C. the acidity of the blood.
D. all of the above.
The amount of matter in something is called: Volume mass
Answer:
An object
Explanation:
I think i'm not sure
Answer:
whats the question here?
Explanation:
matter inside of something would become its mass
??
If an organism is known to have 38 chromosomes in each body cell,
how many chromosomes will each new gamete have after meiosis?
Draw and label the parts of the eye.
State the function of any five parts of the eye.
Answer:
The labeled drawing is attached; I just grabbed an image off of the internet. You can do this by hand by just copying what's in your textbook or other reference materials. Let me define five main parts:
Retina. This is a thin layer of tissue on the back of the eye that receives the signals of light and transfers them to the brain so you can understand them as color and sight.Cornea. This is the front part, a reflective layer that "refracts" light. What this means is that light doesn't go directly through it, but its path is almost deflected a little.Sclera. This is the part that looks white from the front. It's a protein covering to your eye, and it's very close to the cornea.Iris. This is the actually colored part of your eye. If you have hazel or blue eyes, the iris is that portion of the eye. It allows differing amounts of light in.Pupil. This is the black part of the eye. It's a hole that looks black because of all the light coming through and being absorbed.Why is MEIOSIS important? Select all that apply
Each new cell will have an exact copy of chromosomes
Each new cell will have half the number of chromosomes
Each new cell will have double the number of chromosomes
Meiosis results in the formation of a sex cell (egg or sperm)
Meiosis allows the body to make new skin, muscle, and bone cells
If a sperm carrying an X chromosome joins together with an egg, what is the probability that the sex of the fertilized egg will be female?
Answer:
the probability will Be high because boy use one y chromosome and one x chromosome while girls only need two x chromosome
The probability will be high because boy use one y chromosome and one x chromosome while girls only need two x chromosome.
What do you mean by chromosomes?A chromosome is a long DNA molecule with part or all of the genetic material of an organism. In most chromosomes the very long thin DNA fibers are coated with packaging proteins; in eukaryotic cells the most important of these proteins are the histones.
Moreover, chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
Hence, humans typically have 23 pairs of chromosomes, or 46 chromosomes in total. Chromosomes are made up of long strands of DNA, which contain all the body's genes.
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Recombinant DNA technology is possible because all organisms
O A. rely on ribosomes to assemble proteins
B. have some of the same genes
C. use the same codes for amino acids
D. replicate DNA before cell division
Recombinant DNA is possible because all organisms use the same codes for amino acids. Option C is the correct one.
The genetic codesOne of the fundamental characteristics of the genetic codes is that they are similar in all living organisms.
Each genetic code is translated into an amino acid. Thus, living organisms use the same codes for their amino acids in the proteins.
This makes inserting the genes of one organism into the genome of another (recombinant DNA) very easy.
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Cuticular scale patterns in human head hairs tend to be very regular.
Group of answer choices
True
False
Answer:
true
Explanation:
It may be harmful when people compete to see who can hold their
breath the longest under water. Without oxygen, brain cells
Answer:
tend to not get enough oxygen which may lead to severe brain damage and our brains can get Celebral Hypoxia which includes symptoms such as confusion and loss of coordination
Explanation:
When the brain cells receive less oxygen as required by the brain ; The brain suffers a severe damage due to brain hypoxia.
When one holds his/her breath under water the amount of oxygen flowing into the brain cells is cut off and if the oxygen supply is not restored within 5 minutes, the brain cells will start dying off which will result to severe brain damage and eventual death .
Hence we can conclude that When the brain cells receive less oxygen as required by the brain ; The brain suffers a severe damage due to brain hypoxia .
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If the relative humidity is high and the temperature drops, water vapor may _____
Answer: condense
Explanation:
Answer: Condense
Explanation: just took it and got it right
What is the purpose of CITES?
Answer:
CITES (the Convention on International Trade in Endangered Species of Wild Fauna and Flora) is an international agreement between governments. Its aim is to ensure that international trade in specimens of wild animals and plants does not threaten their survival.
Explanation:
Answer:
Purpose of cites
Explanation:
The purpose of cites of scientists is to make sure the information is correct and reliable. We don't want it to be bias! Never. Hope this helps!
How does the experiment contribute to our understanding of altruism in different creatures?
Answer:
TWO YEARS AGO, a group of Ugandan chimps provided a blow to the idea that humans are the only animals that truly behave selflessly to one another. These chimps showed clear signs of true selflessness, helping both human handlers and other unrelated chimps with no desire for reward.
The question of why we help each other, instead of looking out for ourselves, is one of the most compelling in modern biology. Evolutionary and game theory alike predict that selfish behaviour should be the rule with altruism the exception, and animal experiments have largely supported this idea. Nature, ‘red in tooth and claw’, is painted as a fierce competition between selfish individuals and their even more selfish genes. In this stark landscape, true altruism is apparently a rare quality and some scientists believe that it’s one
Explanation:
Answer:
TWO YEARS AGO, a group of Ugandan chimps provided a blow to the idea that humans are the only animals that truly behave selflessly to one another. These chimps showed clear signs of true selflessness, helping both human handlers and other unrelated chimps with no desire for reward.
The question of why we help each other, instead of looking out for ourselves, is one of the most compelling in modern biology. Evolutionary and game theory alike predict that selfish behaviour should be the rule with altruism the exception, and animal experiments have largely supported this idea. Nature, ‘red in tooth and claw’, is painted as a fierce competition between selfish individuals and their even more selfish genes. In this stark landscape, true altruism is apparently a rare quality and some scientists believe that it’s one
Explanation:
1. One of the central themes in biology is how DNA, RNA, and proteins are related. Describe how genetic
information is passed among those types of molecules. Include the results of the processes of
transcription and translation
Answer:
Transcription uses a strand of DNA as a template to build a molecule called RNA. The RNA molecule is the link between DNA and the production of proteins. During translation, the RNA molecule created in the transcription process delivers information from the DNA to the protein building machines.
Explanation:
During which process is converted into a sequence amino acks protein production?
Answer:
Protien Synthesis
Explanation:
If strand 1 in a segment of a replicating DNA molecule has the bases A-T-C-C-G-A-G-G-T, the complementary DNA strand would contain the bases
T-A-G-G-C-T-C-C-A
T-U-G-G-C-T-C-C-G
U-A-G-G-C-U-U-C-C
A-T-G-G-C-T-C-C-A
Answer:The first one
Explanation:
Adenine is to thymine
Guanine is to Cytosine
What is the cause of Angelman Syndrome?
a) A mutation that occurs randomly after birth or due to a viral infection in the mother during pregnancy.
b) The shutting off of the paternal chromosome and the deletion on Chromosome 15 from the mother.
c) The shutting off of the maternal chromosome and the deletion on Chromosome 15 from the father.
d) A large deletion of chromosome 15 that is inherited from each parent.
Answer:
Angelman syndrome is caused by a genetic mutation on chromosome 15.
Explanation:
Angelman syndrome is caused by a genetic mutation on chromosome 15. The name of this gene is UBE3A. Normally, people inherit one copy of the gene from each parent, and both copies become active in many areas in the body. Angelman syndrome occurs when only one copy of the gene is active in certain areas of the brain.
Selection is:
O picking what you want for supper
O making more babies than will survive
O having an adaptation
O a desirable trait when choosing a mate
Answer:
Making more babies that will survive and having an adaption
Explanation:
Since plastic doesn't biodegrade in the oceans, what does the future hold? What can be done to make the future better?
Answer:
We need to take out the plastic and recycle
Explanation:
The future is scary if we don't act upon our actions. There are many people trying to restore the oceans and providing options for the average person. Some time ago I saw an advertisement for a search engine that if you use it they will take away plastic from the ocean. It was called OceanHero but there are others that do the same thing, such as: Okeano..etc. But another way is to prevent plastic from going into the ocean in the first place by limiting use of single use plastics and setting nets on pipes that lead to rivers to catch stray micro plastics. Another good idea is to ensure that we are not littering and following recycling rules. If we fail to save what we have left, ocean animals may only exist as skeletons and images in a museum.
Hope this Helps!
As plastic is not biodegradable it need to take out the plastic from oceans , other areas and recycle
what is biodegradable substance ?biodegradable substance is defined as the substance which has been generated from microorganisms like bacteria which can be broken down into the simplest compounds or components.
plastics are typically made as non-biodegradable substances as They can’t be broken down by natural method; it will persist in the environment for at least five hundred years and it can take up to one thousand years before plastic breaks down suggested by some scientist.
One of the way to prevent plastic from going into the ocean in the first place by limiting use of single use plastics and setting nets on pipes to catch stray micro plastics.
on the other hand Biodegradable plastics are a new big game-changer instead of regular polymers, the production of biopolymers reduces the release of CO2 to the air by 2/3.
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Observations and measurements are both types of _____ that can be
collected during an experiment.
Answer:
Data
Explanation:
Select the correct answer.
Which organ connects the kidney to the urinary bladder?
A gallbladder
B.
rectum
renal pelvis
ureter
Е.
urethra
Answer:
ureter, or ureters, are what Connect the kidneys to the bladder
Answer:
urteter
Explanation:
The vertebrae and cartilaginous discs of the spine are parts of which body system? *
Answer:
The skeletal system
Explanation: