BIOLOGY MIDDLE SCHOOL

Before the Krebs cycle can proceed, pyruvic acid must be converted into (a)citric acid (b)glucose (c)acetyl CoA (d) NADH

Answers

Answer 1
Answer:

TCA or the citric acid cycle is a biochemical step in which the saved energy is released by the oxidation of Acetyl Co-A in the cells.

The correct answer is:

Option C. Acetyl Co-A.

This can be explained as:

  • In the process, the pyruvic acid or the pyruvate is split to produce CO₂,ATP, NADH and FADH.

  • The energy liberated during the TCA is the main power source for living cells.

  • It is the most important step in the aerobic inhalation-exhalation process.

Therefore, pyruvic acid must be converted into acetyl CoA for the cycle to proceed.

To learn more about acetyl CoA and Krebs cycle refer to the link:

brainly.com/question/11310480
Answer 2
Answer: Pyruvic acid must be converted into c)Acetyl CoA before the Kreb cycle can proceed.

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Without genetic ___________, natural selection could not occur.
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How do cells increase in number?

Answers

When one cell dies out another one is formed!

it really does depend on what type of 'cell' your talking about. If your talking about a battery type of cells then it's obviouse but I know that there are 3 trillion cells in your body :) reply if this was helpfull

Favorable traits are traits that promote an organism's success in a particular environment. Organisms with favorable traits are more likely to thrive, survive, and reproduce than organisms without favorable traits. Over time, favorable traits are likely to________ within a population and unfavorable traits are likely to ________ within a population.

Answers

Answer: Grow ; Disappear.

Explanation:

The organism that best suits in the environment is likely to grow and reproduce and its population in the environment increases.

Over the time the characters that are favored more survive and the characters that does not allows the organism to survive in harsh conditions are not favored.

These organism die and over the time the traits disappear from the population.
1. Evolve/Grow
2. Disappear

It's because they can survive and reproduce while the unfavorable die off and cannot reproduce, so their traits disappear from the gene pool.

Consider the formula for glucose: C6H1206. What does this indicate about the relationship of the reactants to glucose?OTwelve water (H2O) molecules were used to make it.
O Twelve hydrogen (H2) molecules were used to make it.
O Six oxygen (O2) molecules were used to make it.
O Six carbon dioxide (CO2) molecules were used to make it.

Answers

Answer:

Six carbon dioxide (CO2) molecules were used to make it.

Explanation:

This picture shows the skeleton on an animal. What best describes what the living animal had?A backbone
Radial symmetry
Bilateral symmetry
Asymmetry

Answers

The correct option is, B, that is, RADIAL SYMMETRY.
Symmetry refers to the balanced distribution of the duplicated body parts or shapes within the body of a living organism. There are different types of symmetry, we have bilateral, radial and asymmetrical symmetry. 
Radial symmetry refers to the type of body plan in which the body parts are arranged around a central axis, that is, the body parts are arranged in a circle around an axis.

Answer:B

Explanation:

The Answer is radial symmetry

Order the DNA discoveries

Answers

Answer:

DNA was discovered in 1869 by Swiss researcher Friedrich Miescher, who was originally trying to study the composition of lymphoid cells (white blood cells). Instead, he isolated a new molecule he called nuclein (DNA with associated proteins) from a cell nucleus.

Explanation:

Short pea plants exist in the P1 and F2 generations. What happens to the phenotype in the F1 generation?

Answers

Answer:B:The allele for short pea plants is masked during the F1 generation, but is still present in the genotype

Explanation:

I took the test

Answer is B

Explanation:
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