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Biology And Human Welfare Mock Tests

27 questions available

Biology And Human Welfare Mock Test 1

Questions: 27

नमूना प्रश्न

NEET Biology
Which of the following diseases is caused by the deficiency of insulin?
A Marfan's syndrome
B Diabetes mellitus
C Cushing's syndrome
D Addison's disease
NEET Biology
The enzyme reverse transcriptase is used by which virus to replicate its genetic material?
A Adenovirus
B HIV (Human Immunodeficiency Virus)
C Tobacco mosaic virus (TMV)
D Phage λ (lambda)
NEET Biology
In the nitrogen cycle, which bacteria convert nitrites (NO₂⁻) into nitrates (NO₃⁻)?
A Nitrosomonas
B Nitrobacter
C Azotobacter
D Pseudomonas
NEET Biology
Active immunity differs from passive immunity in which of the following ways?
A Active immunity develops slowly and involves memory cells, while passive immunity is rapid but short-lived
B Active immunity is only cell-mediated, while passive immunity is only humoral
C Active immunity involves antibodies from another individual, while passive immunity involves self-produced antibodies
D Active immunity is always lifelong, while passive immunity lasts only a few days
NEET Biology
Which of the following is the correct statement about the structure of an antibody (immunoglobulin)?
A It consists of 2 heavy chains and 2 light chains held by peptide bonds
B It consists of 2 heavy chains and 2 light chains held by disulfide bonds
C It consists of 4 heavy chains held by hydrogen bonds
D It consists of 2 light chains and 2 carbohydrate chains held by ionic bonds
NEET Biology
Which of the following bacterial structures is primarily responsible for conjugation (transfer of genetic material between bacteria)?
A Capsule
B Pilus (sex pilus)
C Flagellum
D Plasma membrane
NEET Biology
In a pedigree chart, a consanguineous marriage is represented by:
A A double line between male and female symbols
B A horizontal line connecting male and female
C A vertical line from parents to offspring
D A shaded square symbol
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

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