Biology Mock Tests, Practice Questions

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Class 11

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300 questions

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600 questions

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Sample Questions

NEET Biology

Eli Lilly used which approach to produce synthetic human insulin using recombinant DNA technology?

A Isolating insulin genes directly from human pancreatic beta cells

B Synthesizing A and B chains of insulin separately and combining them disulfide bonds

C Using the lac operon to express continuous proinsulin in E. coli

D Engineering yeast cells to produce fully active insulin directly

NEET Biology

Which of the following is the correct statement about the role of mycorrhiza in plant nutrition?

A Mycorrhiza increases the surface area for absorption of water and minerals from soil

B Mycorrhiza provides water and minerals to the fungus while the fungus provides food to the plant

C Mycorrhiza is a parasitic relationship where the fungus harms the plant

D Mycorrhiza is found only in aquatic plants

Class 12 Biology

Which of the following represents the correct order of layers of the anther wall from outside to inside?

A Epicuticle → Epidermis → Endothecium → Middle layers → Tapetum

B Epidermis → Epicuticle → Endothecium → Tapetum → Middle layers

C Epicuticle → Epidermis → Tapetum → Middle layers → Endothecium

D Epicuticle → Epidermis → Middle layers → Endothecium → Tapetum

NEET Biology

The first clinical gene therapy was attempted in 1990 on a 4-year-old girl with Adenosine Deaminase (ADA) deficiency. Which approach was used?

A Somatic gene therapy using retroviral vectors to introduce functional ADA genes into patient's lymphocytes

B Germline gene therapy by modifying the egg cells

C CRISPR-Cas9 editing of the patient's DNA directly in vivo

D Bone marrow transplant from a sibling donor

NEET Biology

In humans, the site where urine is stored before being expelled from the body is the:

A Ureter

B Urethra

C Urinary bladder

D Kidney

NEET Biology

During the cardiac cycle, the "dup" sound of the heart is produced by:

A Closure of the tricuspid and bicuspid valves

B Closure of the semilunar valves

C Start of ventricular systole

D Start of ventricular diastole

NEET Biology

Which of the following is the correct sequence of events in the cardiac cycle?

A Atrial systole → Isovolumetric contraction → Ventricular ejection → Joint diastole

B Joint diastole → Atrial systole → Ventricular ejection → Isovolumetric relaxation

C Atrial systole → Ventricular ejection → Isovolumetric contraction → Joint diastole

D Ventricular ejection → Atrial systole → Joint diastole → Isovolumetric relaxation

NEET Biology

In the lac operon of E. coli, which of the following statements about the role of the inducer is correct?

A The inducer binds to the promoter to initiate transcription

B The inducer binds to the structural genes to activate them

C The inducer binds to the repressor protein, preventing it from binding to the operator

D The inducer binds to RNA polymerase to increase its activity

About Biology Mock Tests

Biology covers anatomy, genetics, ecology, cell biology, physiology, botany, zoology, and life sciences across all class levels and competitive examinations. Practice with comprehensive biology questions aligned with NCERT curriculum and NEET exam pattern, covering topics from cell structure to ecosystems, human physiology to biotechnology.

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