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weqwewe [10]
3 years ago
9

Which of the following pathways does NOT directly deliver materials to lysosomes? A. Exocytosis B. Phagocytosis C. Autophagy D.

Endocytosis E. Macropinocytosis
Biology
1 answer:
Lelu [443]3 years ago
4 0

Answer: Option A) Exocytosis

Explanation:

Unlike the other pathways mentioned, exocytosis involves the outward movement of outside the cells. This is vital in the removal of waste products generated within the cell.

Thus, exocytosis is the answer because it expels materials out of the cell, rather than deliver materials to lysosomes

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A lab-reared strain of mice is glucose 6-phosphate-insensitive. How would this affect glycogen synthesis? Select the best answer
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Answer:

The best response is polyose synthesis would decline as a result of the b form of glycogen synthase couldn't be allosterically stimulated. In general, aldohexose six phosphate allosterically stimulates the protein polyose synthase. However as this mice is complex to aldohexose six phosphate, polyose synthase can't be stimulated, and as an effect polyose synthesis would decline.

3 0
3 years ago
The Krebs cycle involves the aerobic breakdown of glucose for energy. In the first reaction of the Krebs Cycle, the enzyme Aconi
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Answer:

The reaction is at equilibrium

Explanation:

The Krebs cycle is an aerobic pathway because the final electron acceptor required is oxygen.

The most common situation leading to a disruption in the function of Krebs cycle is the lack of oxygen to accept electrons in the electron transport chain.  

The conversion of citrate to isocitrate (isomerization), is catalyzed by the enzyme, aconitase (also known as aconitate hydratase). The hydroxyl (alcohol) group of citrate is moved to an adjacent carbon so that it can be oxidized to form a keto group.

This reaction involves generation of an enzyme-­bound intermediate, cis­aconitate. At equilibrium, there exists 90% citrate, 3% cis­aconitate, and 7% isocitrate; hence the equilibrium of aconitase lies toward citrate formation.

Although the aconitase reaction does not require cofactors, it requires ferrous (Fe2+) iron in its catalytic mechanism. This Fe2+ is involved in an iron–sulfur center, which is an essential component in the hydratase activity of aconitase.    

According to Gibb's free energy:

ΔG = 0 - Reaction at equilibrium.

ΔG > 0 - non-spontaneous reaction.

ΔG < 0 - spontaneous reaction.

3 0
4 years ago
In eukaryotes, mitosis is the process that produces 4 identical cells from two cells
Svet_ta [14]
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It is called a herd 
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