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Sladkaya [172]
2 years ago
7

What are some possible reasons a cell might not be able to create and deliver all the protein it needs? Co e up with at least fo

ur potential reasons and discuss specific cell structures and their functions.
Chemistry
1 answer:
OverLord2011 [107]2 years ago
4 0

Answer:

Gene mutations

Low level of transcription

Not enough amino acids

Problems with protein trafficking

Explanation:

Mutations in genes or their surrounding regulatory elements could affect the transcription of the gene or the sequence of the mRNA. For example, mutations in the gene regulatory elements could affect the binding of transcription factors that affect gene transcription. This would in turn affect the abundance of mRNA. Alternatively, a deletion in the gene could result in an incomplete and non-functional protein being produced. While a mutation would only directly affect one protein, it could have a knock on effect on a variety of others

In the nucleus, if gene transcription is low, the cell will not produce enough mRNAs, which are translated into protein. This could happen if, for example, the level of RNA polymerase or another important factor in transcription, are low. If the transcription machinery is not producing enough mRNA, then the protein synthesis machinery in the cytoplasm will not have templates from which to make proteins

Amino acids are important building blocks of proteins. Not all of the amino acids can be produced by the cell, some of them have to be obtained from our diet. For example, valine. If there is not a sufficient pool of valine in the cell, then the tRNA will not be able to deliver valine to the ribosome quickly enough to growing mRNA chains. This means the protein synthesis machinery can't keep up with the demands of the cell, resulting in less protein being synthesised.

The Golgi apparatus is an important organelle in the trafficking of proteins. Proteins reach the Golgi apparatus, and are enclosed in membrane-bound vesicles, where they are delivered to the sites they are required, for example, proteins are secreted outside the cell in this way. A problem with the Golgi apparatus would mean proteins cannot be secreted outside the cell properly. The Golgi apparatus is known to be dysfunctional in Alzheimer's disease, for example.

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Which of the following is a buffer system? Which of the following is a buffer system? H2CO3(aq) and KHCO3(aq) NaCl(aq) and NaOH(
Readme [11.4K]

Answer:

Explanation:

A buffer is defined as an aqueous mixture of a weak acid and its conjugate base or vice versa.

In the systems:

H₂CO₃(aq) and KHCO₃(aq): Carbonic acid, H₂CO₃, is a weak acid that, in solution with its conjugate pair, HCO₃⁻ make a <em>buffer system.</em>

NaCl(aq) and NaOH(aq): NaCl is a salt and NaOH is a strong base. Thus, this system <em>is not </em> a buffer system.

H₂O(l) and HCl(aq): Water is a solvent and HCl a strong acid. This <em>is not </em>a buffer system.

HCl(aq) and NaOH(aq): HCl is a strong acid and NaOH a strong base. This <em>is not </em>a buffer system.

NaCl(aq) and NaNO₃(aq): Both NaCl and NaNO₃ are salts and this system <em>is not </em>a buffer system.

3 0
3 years ago
Oxygen gas generated in the thermal decomposition of potassium chlorate is collected over water. At 24ºC and an atmospheric pres
Yanka [14]

Answer:

its 0.163 g

Explanation:

From the total pressure and the vapour pressure of water we can calculate the partial pressure of O2​

PO 2 =P t −P H 2 O

​= 760 − 22.4

=  737.6 mmHg

From the ideal gas equation we write.

W= RT/PVM = (0.0821Latm/Kmol)(273+24)K(0.974atm)(0.128L)(32.0g/mol/) =0.163g

6 0
2 years ago
What geometry does VSEPR predict for the central atom in PF5
ddd [48]

so you can see those fluorine atoms have really spread out around the central phosphorus atom. this gives us a trigonal bi-pyramidal molecular geometry for pf5.

8 0
3 years ago
Which of these takes place when a chemical change occurs? option 1: Bonds connecting atoms in products and reactants form. optio
Tamiku [17]

Answer: Out of the given options bonds connecting atoms in reactants break, and bonds connecting atoms in products form are the changes which takes place when a chemical change occurs.

Explanation:

A change that leads to the change in chemical composition of a substance is called a chemical change.

For example, 2NH_{3} \rightarrow N_{2} + 3H_{2}

Here, bond between the reactant atoms nitrogen and hydrogen is broken down.

On the other hand, bond connecting the products that is N_{2} and H_{2} is formed.

Thus,, we can conclude that out of the given options bonds connecting atoms in reactants break, and bonds connecting atoms in products form are the changes which takes place when a chemical change occurs.

4 0
3 years ago
Identify the change in state that does NOT have an increase in entropy. Identify the change in state that does NOT have an incre
Lena [83]

Answer:

condensing water

Explanation:

Entropy refers to the level of disorderliness in a system. The entropy of liquids is greater than that of solids. The entropy of gases is greater than that of liquids.

A process of physical change involving a change of state from solid to liquid or liquid to gas is accompanied by increase in entropy.

However, a change of state involving a change from liquid to solid or gas to liquid is accompanied by decrease in entropy.

Hence, steam condensing to water leads to decrease and not increase in entropy of the system.

4 0
2 years ago
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