1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
stira [4]
2 years ago
7

Which compound plays a pivotal role in both the first and last step of the TCA cycle? a. pyruvate b. oxaloacetate c. oxalate d.

glycerol e. acetyl CoA
Biology
1 answer:
vitfil [10]2 years ago
8 0

Answer:

Option b oxaloacetate is the right one.

Explanation:

There are major eight steps in TCA cycle. Oxaloacetate plays a pivotal role in <u>first and eight step</u>s of cycle.

Step 1. In the first step of the citric acid cycle, acetyl CoA joins with a four-carbon molecule, oxaloacetate, releasing the CoA group and forming a six-carbon molecule called citrate.

Step 8. In the last step of the citric acid cycle, oxaloacetate—the starting four-carbon compound-is regenerated by oxidation of malate. Another molecule of NAD+ is reduced to NADH in the process.

You might be interested in
Which of the following is NOT a characteristic of triglycerides?
Harman [31]

Answer: B.

Explanation:

3 0
2 years ago
Use a Punnett square to help answer the question.
denis-greek [22]
Hm, I thought it would be 0%. . . Since the male (hetero) would be Bb and the female (homo dominant) would be BB, So the dominant gene would be dominant over all of the recessive genes. (BB, BB, BB, Bb). 
6 0
3 years ago
Most cells cannot harness heat to perform work because
Daniel [21]

Answer:

Temperature is usually uniform throughout a cell (Ans. C)

Explanation:

Heat or thermal energy is a kinetic energy. That is connected with the random movements present in the atoms. Temperature is usually uniform throughout the cell so the most cell can not harness heat to perform work.

Heat is a type of energy which is transfer from one body to another body due to the temperature difference.

It can only perform work if it is transferred from one source which is warmer to a body which is cooler. The temperature in living organisms is usually kept very constant due to the process of homeostasis.

5 0
2 years ago
How can carbon dioxide be considered a pollutant when it is a natural component of air?
Oduvanchick [21]

The correct answer is option B

Carbon dioxide is present in the environment along with the other gases and still it is considered as a pollutant when its concentration in the atmosphere increases than the normal concentrations.

The normal concentration of the carbon dioxide is maintained by the help of plants that use carbon dioxide for the process of photosynthesis.

The increased amount of carbon dioxide in the atmosphere is caused due to the human activity.

Industrial release, pollution from automobiles are some of the sources of carbon dioxide emission.

4 0
2 years ago
Read 2 more answers
An increase in temperature results in what
kompoz [17]

Answer:

Melting of glaciers which leads to flood

Explanation:

If you like my answer than please mark me brainliest thanks

6 0
2 years ago
Other questions:
  • Why do wetlands have a rich supply of nutrients?
    13·1 answer
  • Many important fossil discoveries have occurred in the Great Rift Valley of Africa. Describe the process that enabled these foss
    13·1 answer
  • Where do plants get the nitrogen they need to create amino acids and DNA?
    9·2 answers
  • What are the two major types of chemical compounds?
    6·2 answers
  • In humans, the DMD gene is required for proper muscle function. Mutations in the DMD gene display X-linked recessive inheritance
    15·1 answer
  • an artery ______________________. a. brings blood back toward the heart b. has valves that prevent blood from flowing backward c
    13·1 answer
  • The oldest members of the human lineage are the Australopithecines.<br> a. True<br> b. False
    15·1 answer
  • What is the name of this plant and which category is this parasitic,Insectivorous plant and saprophytice plant?
    6·1 answer
  • List 5 pairs of organisms that rely on each other to survive the Everglades ecosystem.
    7·1 answer
  • What is biological success
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!