1
NEET 2026
MCQ (Single Correct Answer)
+4
-1
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In humans, respiration occurs in the following steps. Arrange these steps in the correct order.

A. Diffusion of $\mathrm{O}_2$ and $\mathrm{CO}_2$ between blood and tissues

B. Diffusion of $\mathrm{O}_2$ and $\mathrm{CO}_2$ across alveolar membrane

C. Pulmonary ventilation by which atmospheric air is drawn in and $\mathrm{CO}_2$ rich alveolar air is released out

D. Cellular respiration

E. Transport of gases by the blood

Choose the correct answer from the options given below

A

$\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}, \mathrm{E}$

B

$\mathrm{E}, \mathrm{A}, \mathrm{C}, \mathrm{D}, \mathrm{B}$

C

$\mathrm{C}, \mathrm{B}, \mathrm{E}, \mathrm{A}, \mathrm{D}$

D

$\mathrm{C}, \mathrm{A}, \mathrm{B}, \mathrm{E}, \mathrm{D}$

2
NEET 2026
MCQ (Single Correct Answer)
+4
-1
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The following are the stages of life cycle of Plasmodium. Arrange the stages in the proper order.

A. The parasites reproduce asexually in RBCs, bursting the cells.

B. The parasites reproduce asexually in liver cells, bursting the cells and releasing into blood.

C. Gametocytes develop in RBCs.

D. Sporozoites reach the liver through the blood.

E. Female mosquito injects sporozoites into humans during bite.

Choose the correct answer from the options given below:

A

$\mathrm{E}, \mathrm{D}, \mathrm{B}, \mathrm{A}, \mathrm{C}$

B

$\mathrm{A}, \mathrm{B}, \mathrm{C}, \mathrm{D}, \mathrm{E}$

C

$\mathrm{C}, \mathrm{A}, \mathrm{B}, \mathrm{D}, \mathrm{E}$

D

$\mathrm{E}, \mathrm{C}, \mathrm{D}, \mathrm{B}, \mathrm{A}$

3
NEET 2026
MCQ (Single Correct Answer)
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Insertion of a foreign DNA at BamHI site in an E.coli cloning vector pBR322 results in the loss of antibiotic resistance towards:

A

Ampicillin and tetracycline

B

Ampicillin

C

Tetracycline

D

Gentamycin

4
NEET 2026
MCQ (Single Correct Answer)
+4
-1
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The following reaction depicts the activity of a particular class of enzymes :

NEET 2026 Biology - Biomolecules Question 1 English

Identify the enzymes class ' $E$ ' from the following options :

A

Transferases

B

Isomerases

C

Lyases

D

Ligases