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timofeeve [1]
3 years ago
10

What makes Kingdom Protista unique compared to the other kingdoms?

Biology
1 answer:
Svetach [21]3 years ago
6 0
Protists are eukaryotes, which means their cells have a nucleus and other membrane-bound organelles. Most, but not all, protists are single-celled.
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One pyruvate molecule will generate _______ molecules of CO2 after completing the citric acid cycle
Rzqust [24]

Answer:

c) 3

Explanation:

Cellular respiration includes following 3 processes:

1) Glycolysis

2) Citric acid cycle or TCA or Kreb's cycle

3) Electron Transport Chain (ETC)

In glycolysis, a 3 carbon compound known as pyruvate is produced from glucose. Each glucose molecule produces 2 pyruvate molecules. Each pyruvate molecule then enters a complex known as Pyruvate dehydrogenase complex wherein the pyruvate molecule further undergoes oxidative decarboxylation to produce a 2 carbon compound known as Acetyl-CoA.

.

The Acetyl-CoA then enters citric acid cycle or TCA or Kreb's cycle wherein this Acetyl-CoA and oxaloacetate are oxidized to produce CO₂ molecules in eight steps. Each glucose molecule is capable of producing six CO₂ after the completion of citric acid cycle. Since one glucose molecule produces 2 pyruvate molecules then it means <u>a pyruvate molecule will be able to produce three CO₂.</u>

8 0
3 years ago
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Based on scientific research, which statement best describes mutations?
andriy [413]

Answer:

<h3>Mutations are rare occurrences.</h3>

"A Mutation occurs when a DNA gene is damaged or changed in such a way as to alter the genetic message carried by that gene. A Mutagen is an agent of substance that can bring about a permanent alteration to the physical composition of a DNA gene such that the genetic message is changed."

<h3><u>Brainliest please!</u></h3>
8 0
3 years ago
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In muscle cells, fermentation produces _____. In muscle cells, fermentation produces _____. carbon dioxide, ethanol, and NAD car
nydimaria [60]

Answer:

In muscle cell, fermetation produces <u>"lactate and NAD"</u>

<u>In fermentation Pyruvate is reduced and __NADH__ is oxidized.</u>

Explanation:

Muscle cells perform lactic acid fermentation when enough oxygen is not available to support aerobic cellular respiration. The process of glycolysis forms two molecules of pyruvate from one glucose molecule and uses NAD+ as electron acceptor. During lactic acid fermentation, pyruvate is reduced into lactate and NADH serves as an electron donor. The final products are lactate and NAD+. The reaction is catalyzed by lactate dehydrogenase enzyme. The NAD+ produced by fermentation is required to continue the process of glycolysis.

6 0
2 years ago
Which best describes biogeographic isolation?
Tatiana [17]
Bio-geographic isolation is the separation of part/a whole species due to either biological or geographical reasons.

Biological could be lack of food, or a more preferable source of food somewhere else, etc. Geographical could be rivers, oceans, mountains, etc.

8 0
3 years ago
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Give two ways in which saliva aids digestion. ​
77julia77 [94]

Explanation:

Saliva contains special enzymes that help digest the starches in your food. An enzyme called amylase breaks down starches (complex carbohydrates) into sugars, which your body can more easily absorb. Saliva also contains an enzyme called lingual lipase, which breaks down fats.

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