Which of these transport processes is the major means by which Na+ is transported across the membrane of neurons? Why?
A) both II and III because the activity of the neuron varies
B) I because Na+ is so small it can freely diffuse into the cell
C) III because Na+ is actively transported out of a neuron to maintain extracellular concentration
D) II because Na+ is charged and cannot cross the hydrophobic interior space of the cell membrane
Answer:
i think it’s C
Explanation:
I. is diffusion
II. is facilitated diffusion
III. is active transport
the third diagram makes most sense to me
Transport processes is the major means by which Na+ is transported across the membrane of neurons,I because Na+ is so small it can freely diffuse into the cell.
What are membrane used for?Membranes are used more and more often for the creation of process water from groundwater, surface water or wastewater. Membranes are now competitive for conventional techniques.
Thus, option "B" is correct.
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Describe the overall trend in corn yield from 1988 to 2008. How does the trend in corn yield during the time compare to tends for total nutrients and nitrogen?
The trend in the corn productivity shows an increase from the year 1988 to 2008.
This is because of high yielding varieties of corn, new technology and application of optimum dose of fertilizer and other agronomic activities. The trend in corn yield for the nutrients and nitrogen increases because new high yielding varieties needs more nitrogen as well as other nutrients as compared to local or old varieties so it is concluded that productivity and nutrients uptake increase with the passage of time.
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Answer:
thank you to the person who answered this lol
Explanation:
How do heterotrophs make energy? How do autotrophs make energy?
Answer:
Heterotrophs obtain energy by eating plants and animals. Plants are autotrophs, absorbing the sun's energy through photosynthesis and making glucose. Most autotrophs use a process called photosynthesis to make their food. In photosynthesis, autotrophs use energy from the sun to convert water from the soil and carbon dioxide from the air into a nutrient called glucose.
whih type of blood cell does sickle cell anaemia affect?
Answer:
Red blood cells
Explanation:
Hemoglobin carries oxygen in red blood cells
Barbara's teacher wants her to design an oven that can be powered by a renewable resource. Which of the following energy sources could Barbara use?
A
coal
B
gasoline
C
uranium
D
sunlight
Answer:
The answer is sunlight
Explanation:
I hope that's true
What do all living things have in common?
A. All living things make the same proteins.
B. All living things have a nucleus to house DNA in their cells.
C. All living things have the same 5 nitrogen bases.
D. All living things need oxygen to breathe.
Answer:
i thing it's b or c
Explanation: the earliest bacteria didn't need oxygen at first.and not all living things create the same proteins. it matters on what kingdom and species it is from.
Which is a likely limitation of this model?
It does not show which countries are to the north and south.
It does not show America's major rivers.
It does not show mountainous regions.
It does not show the oceans surrounding America.
Answer:
it does not show mountainous regions
What forces could disturb the footprints on the moon? Is this likely? Explain your answer.
Which statement is true concerning visible light and the
electromagnetic spectrum?
All electromagnetic radiation is considered to be
visible
b
Visible light is not part of the electromagnetic
spectrum
Visible light is a large portion of the
electromagnetic spectrum
d
Visible light is a small portion of the
electromagnetic spectrum,
Answer: D
Explanation: visible light makes up only a very very, very small portion of the entire electromagnetic spectrum
The true statement concerning visible light and electromagnetic radiation is considered to be - d. Visible light is a small portion of the electromagnetic spectrum.
The electromagnetic spectrum is the range of frequencies of electromagnetic waves or radiations. This spectrum also gives an idea about the wavelengths of electromagnetic radiations. The part of the spectrum on their higher to lower energy or frequency range from [tex]10^{4}[/tex] Hz to [tex]10^{18}[/tex] Hz are:
gamma raysX-raysultraviolet radiationvisible lightinfrared radiationradio waves.The visible light is the very small part of the electromagnetic spectrum that ranges from the [tex]400*10^{14} Hz[/tex] to [tex]800*10^{14} Hz[/tex], Visible light is the light that the human eye can see.
Thus, the correct answer is- option d.
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How does a catalyst work?
Answer:
A catalyst is a chemical substance that affects the rate of a chemical reaction by altering the activation energy required for the reaction to proceed. This process is called catalysis. A catalyst is not consumed by the reaction and it may participate in multiple reactions at a time.
Explanation:
vote brainlyest
What is a common source of fat within the body that can be used for metabolism
Answer:
oil
Explanation:
Lipids are fat and oils are lipids
Answer:
Your answer is lipids.
I attached a picture please help. All I need is #3. :)
define Hypothermia in a way a elementary kid would understand
I NEED HELP ASAP!!!!!! * IS MY ANSWER
metabolism is a process of breaking down molecules and forming new ones.
Where do most of this occur within the cell?
A-CYTOPLASM ******
B- NUCLEUS
C- DNA
D- CELL WALL
What net force must act on the glass in order to make it accelerate to the right at a rate of 5 m/s^2 ? (Hint: Use F = ma.)
A. F = 10 N right
B. F = 2.5 N right
C. F = 5 N left
D. F = 0.5 N left
Answer:
f = 2.5 N right
Explanation:
Answer:
Option B) F = 2.5 N right
Which statement describes a characteristic of the asthenosphere?
Temperatures are cool.
Consistency is solid.
Thickness is less than crust.
O Pressure is higher than crust.
Answer:
D
Explanation:
I am taking the test
The statement describes the property of the asthenosphere, which is that the pressure is higher than the earth's crust.
What are the properties of the asthenosphere?The asthenosphere is the denser and weaker layer below the mantle of the lithosphere. It is approximately 100 kilometers (62 mi) and 10 kilometers (255 mi) below the Earth's surface.
The asthenosphere is the part of the upper mantle below the lithosphere that participates in plate tectonic movement and isostatic regulation. It consists of peridotite, a rock that mainly contains the minerals olivine and pyroxene.
The asthenosphere is the mechanically weak and flexible region of the Earth's upper mantle. It is located under the lithosphere, approximately 80-200 kilometers below the earth's surface and extends to a depth of 700 kilometers.
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The ranges of the Eastern meadowlark (Sturnella magna) and the Western
meadowlark (Sturnella neglecta) overlap. To the untrained eye, these species
look nearly identical. However, they rarely breed with each other because they
have very different songs. Which of the following terms applies to these
species?
A. Geographical isolation
B. Behavioral and geographical isolation
C. Behavioral isolation
O D. Temporal isolation
Answer: behavioral isolation
Explanation:
Look at the diagram. What type of cell is shown by number 4?
Answer:
we cannot see a diagram
POSSIBLE HYPOTHESIS:
INDEPENDENT VARIABLE
DEPENDENT VARIABLE:
EXPERIMENTAL GROUP:
CONTROL GROUP:
CONCLUSION:
Please help quick
What do animals do with the carbon dioxide produced in their cells during cellular respiration?
Answer:
Explanation:
During cellular respiration animal cells combine oxygen with food molecules to release energy to live and function. Remember that cellular respiration produces carbon dioxide as a waste product. ... They release the carbon dioxide into the air as a waste product. Plants help animals and animals help plants.
The carbon dioxide produced in animal cells during cellular respiration is considered a waste and must be disposed of accordingly.
The carbon dioxide generated from cellular respiration in animal cells must be disposed off the cell because their build-up can be toxic to the cell.
Being a gas, carbon dioxide is got rid of by diffusing out of the cell while the oxygen required for cellular respiration usually diffuses in.
When carbon dioxide is allowed to accumulate in the cell, it might affect other processes such as the partial pressure of oxygen in the cell, and so on.
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how did avery help build our undertanding of genetics
How are polymers formes
Answer:
Polymers are formed by two main ways called addition and condensation polymerization. In addition, polymerization, an initiator (or catalyst) reacts with a starting monomer. The result of this initiation reaction is a monomer attached to the initiator with an unsatisfied bond
Explanation:
Answer:
Polymers are formed, in two main ways called addition and condensation polymerization. Also, polymerization, an initiator (or catalyst) reacts with a starting monomer. The result of this initiation reaction is a monomer attached to the initiator with an unsatisfied bond.
Explanation:
Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom which term best describes carbon dioxide?
A Mixture
B atoms
C elements
D compound
Answer:
It's a compound
Explanation:
A compound is two or more elements joined together. The fact that two oxygen particles and a carbon particle is joined together means it's a compound.
What is it cause Idk what it is I need help
Answer:
visible light is the small portion of the electromagnetic spectrum
Answer:
It would be answer A
Explanation:
It would be: Visible Light is a small portion of the electromagnetic spectrum, because it only takes up the ROYGBIV colors we can see, things such as micro waves, gamma waves, X rays, Infrared, Ultraviolet, and other waves would not be visible.
Explain the connection between the Nucleolus, ribosome, and RER.
AnswerExplanation:
The nucleolus is a region of the nucleus where ribosomal RNAs are synthesized.
Ribosomes are protein synthesis factories made from the ribosomal RNAs that are synthesized in the nucleolus and ribosomal proteins.
Sometimes, ribosomes are found free in the cytoplasm, other times they are attached to the endoplasmic reticulum, forming the rough endoplasmic reticulum. The rough endoplasmic reticulum is the site of protein synthesis for proteins that are to be secreted from the cell
Which of the following is NOT a type of muscle?
Question 19 options: The answer is "LONG" the rest are muscles.
Cardiac
Skeletal
Long
Smooth
Answer:
Long is not a muscle
Explanation:
the 3 types of muscles are cardia skeletal smooth, have a great day
The answer is "Long." "Long" is not a type of muscle; it seems to be an incorrect option. The correct options for types of muscle are Cardiac, Skeletal, and Smooth.
These are the three main types of muscles found in the human body. Cardiac muscles are found in the heart, skeletal muscles are attached to the skeleton and enable voluntary movement, and smooth muscles are found in various organs and control involuntary movements.
Therefore, "Long" is not a recognized type of muscle and does not fit within the categories of cardiac, skeletal, or smooth muscles.
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Which statement best describes the feeding behavior of salamanders that live on land?
A. They are active at night, and they feed on insects, crustaceans, and worms.
B. They are active at night, and they feed on berries and leaves.
C. They are active during the day, and they feed on insects, crustaceans, and worms.
D. They are active during the day, and they feed on berries and leaves.
Answer: The answer to your question is A. They are active at night, and they feed on insects, crustaceans, and worms.!
Explanation: Salamanders are ( by nature ) carnivorous and nocturnal, these to factors match to answer A. While these traits could likely be changed due to an alarmingly high amount of pressure such as lack of food, or differentiating climates ( because salamanders prefer colder parts of the day instead of hotter ), your answer is A!
Hope this helps, if not, comment below please!!!
Answer:
the answer is A They are active at night, and they feed on insects, crustaceans, and worms.
Select the correct answer from each drop-down menu.
Because vitamins carry out various functions in our body, deficiency of different vitamins can have varied effects on the body. Vitamin C aids the synthesis of collagen and plays a role in
. So, the deficiency of vitamin C may result in
.
The deficiency of vitamin C results in a disease known as scurvy. Hence, a person suffering from a deficiency of vitamin C will have scurvy.
What is Vitamin C?
Vitamin C is a water-soluble vitamin that is found in the citrus fruits such as lemons, oranges, and pineapple. It is also known as ascorbic acid. It is used as a cofactor for the interlinking of collagen fibers. It plays important role in maintaining the integration of the muscles and collagen.
It is also an important antioxidant in the body. It encounters the free radical released in the body. It is also used in skin serums as it tightens the skin. Chewable supplements are also available.
Vitamin C is also known as ascorbic acid, its deficiency leads to the loosening of skin and scurvy.
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Which of the following is not a true polymer? Dna, cellulose, fat, protein
Answer:
cellulose
Explanation:
it is not the true polymer
Answer:
cellulose
-hope this helped
Write why is asexual is better. 1 paragraph