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igomit [66]
3 years ago
10

Proteins in the cell membrane have many functions. Which type of protein would be used primarily to transport materials in or ou

t of the cell? A. Pore proteins B. Peripheral proteins C. Endoplasmic proteins D. Glycoproteins
Biology
1 answer:
S_A_V [24]3 years ago
8 0

So we know that to transport materials in or out of the cell, we need to have access to both the inside and outside of the cell. This would require that the protein be a transmembrane protein that reaches both the inside and the outside of the cell.

So in this case, let's look at pore proteins. These are proteins that cross a membrane and act as a pore for the materials that need to cross the membrane.

One example of a pore protein is an aquaporin. These proteins aid in the transport of water into or out of a cell.

Therefore, the answer to your question is: A) Pore proteins.

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The involvement of ATP in the nitrogenase complex is because ATP is needed to: a. provide electrons. b. phosphorylate the enzyme
german

Answer:

c. break the N2 triple bond.  

Explanation:

In the general nitrogen reduction reaction (which occurs in the nitrogenase complex), ferredoxin acts as an electron donor to Fe-protein, which in turn hydrolyzes ATP and reduces MoFe-protein. By reducing MoFe-protein one can then reduce numerous (triple bonded) substrates although, under natural conditions, it reacts only to N2 and H +.

That is, ATP must be present in the reaction so that MoFe-protein can break the triple bond N2.

The binding and hydrolysis of ATP to Fe-protein causes a change in conformation of this protein which facilitates redox reactions. The enzymatic reduction of N2 by nitrogenase requires a large energy investment, although the exact changes in free energy are still unknown.

6 0
3 years ago
WHY IS EVERYONE IGNORING THIS QUESTION<br> ONLY ANSWER IF YOU KNOW THE ANSWER 100 PERCEMT
poizon [28]
8) The answer is A and 9) the answer is C.
7 0
3 years ago
Which of these is the beginning of the life cycle of stars with different initial masses?
tigry1 [53]
The doppler effect, when used with light, produces a shift of frequencies to red. Well, no matter which direction you look, there is a shift to red! That means that the universe is expanding or moving away from us in every direction. The idea, is that this could only happen if all matter was once in a single point, and there was an explosion. This explosion from a single point is called the big bang theory. 
A nebula is a cloud of gases that can coagulate to become a new star.
5 0
3 years ago
In the 1960s, even though most of his friends tried recreational drugs, Sebastian refused to experiment. He did not think drugs
vampirchik [111]

Answer:

The options

a.social moral reasoning.

b.conventional moral reasoning.

c.postconventional moral reasoning.

d.preconventional moral reasoning.

The CORRECT ANSWER IS b.

b.conventional moral reasoning.

Explanation:

The conventional level of moral reasoning is particular of adolescents and adults. To think in a conventional way is to presume the morality of actions by contrasting them to society's opinions and standard.

In this case, the morality of an action relies majorly on peer acceptance.

Take for instance: I would turn down the act of drinking and driving due to what my friends will reason of me and my perception of belittling myself.

Conventional moral reasoning judges an action by its compliance to society's rules so as to promote social order just as in this case study.

3 0
3 years ago
The environment has changed and the frequency of the p allele has gone down, what will this do to the q allele? Cause it also to
atroni [7]
The answer is <span>The q allele will go up.

Let's assume that the population is in the Hardy-Weinberg equilibrium and there are only two alleles of some gene. </span>The Hardy-Weinberg principle can be expressed as p + q = 1 where p is the frequency of the p allele and q the frequency of q allele.
Let initial frequencies be:
p = 0.6
q = 0.4
p + q = 1
0.6 + 0.4 = 1
Now, after the environmental change, the frequency of the p allele has gone down, for example p = 0.3
So, p goes from 0.6 to 0.3.

The frequency of the q allele can be calculate using Hardy-Weinberg principle:
p + q = 1
q = 1 - p
q = 1 - 0.3
q = 0.7

Thus, q goes from 0.4 to 0.7.
7 0
3 years ago
Read 2 more answers
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