Free NEET Biology Questions and Answers

Question 1

The carbon dioxide produced during cellular respiration is

Accepted Answer

taken out

Answer

absorbed

Answer

consumed

Answer

stored

Question 2

Which process produces oxidative phosphorylation?

Accepted Answer

ATP in respiration

Answer

NADH in respiration

Answer

NADPH in photosynthesis

Answer

ATP in photosynthesis

Question 3

What is glycolysis' final result?

Accepted Answer

Pyruvic acid

Answer

Fructose I – phosphate

Answer

Glucose I – phosphate

Answer

Acetyl CoA

Question 4

The connection between the Krebs cycle and glycolysis is modified before pyruvate enters the cycle to

Accepted Answer

Acetyl CoA

Answer

Oxaloacetate

Answer

PEP

Answer

Pyruvate

Question 5

NADP+ conversion to NADPH is reduced in

Accepted Answer

Calvin cycle

Answer

HMP

Question 6

Select the false statement about the Krebs cycle.

Accepted Answer

cycle starts with condensation of acetyl group with pyruvic acid to produce citric acid

Answer

during the conversion of succinyl Co-A to succinic acid, synthesis of a molecule of GTP occurs

Answer

the cycle has three points where reduction of NAD+ to NADH + H+ occurs

Answer

at a point, reduction of FAD+ to FADH2. occurs

Question 7

For every glucose molecule that enters the cell, 38 ATP molecules are used to store ________ of energy.

Accepted Answer

686 Kcal

Answer

277 Kcal

Answer

654 Kcal

Answer

456 Kcal

Question 8

Which of these is the ultimate respiratory substrate and produces the most ATP molecules?

Accepted Answer

Glucose

Answer

Ketogenic amino acid

Answer

Glycogen

Question 9

In cellular respiration, the CH bond of food is broken down by

Accepted Answer

oxidation

Answer

catalysis

Answer

reduction

Answer

metabolism

Question 10

The incomplete oxidation of glucose into pyruvic acid, which involves numerous intermediate processes, is known as .

Accepted Answer

Glycolysis

Answer

HMS-pathway

Answer

TCA-pathway

Answer

Krebs cycle