biology MCQs – Page 75

Practise multiple-choice questions from biology for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

biology Mcqs
1481. Which bacterium is used in the production of insulin by genetic engineering?
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A. saccharomyces

B. Rhizobium

C. Escherichia

D. Mycobacterium

1482. Tibia bone is in the body _____________?
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A. Hand

B. Leg

C. Ear

D. Nose

1483. Path of Blood present in vessels called __________?
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A. Plasma

B. Lumen

C. Capillaries

D. Platelates

1484. Plasmids are used as cloning vectors for which of the following reasons?
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A. Can be multiplied in culture

B. Can be multiplied in laboratories with the help of enzymes

C. Replicate freely outside bacterial cells

D. Self-replication in bacterial cells
1485. ELISA is _________?
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A. Addition of substrate that is converted into a coloured end product

B. Using complement-mediated cell lysis

C. Using radiolabelled second antibody

D. Usage of RBCs

1486. Which of the following is the quality of improved transgenic basmati rice?
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A. Does not require chemical fertilizers and growth hormones

B. Gives high yield and is rich in vitamin A

C. Resistant to insects and diseases

D. Gives high yield but no characteristic aroma

1487. Which is a genetically modified crop?
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A. Bt-cotton

B. All

C. Bt-brinjal

D. Golden rice

1488. The expression of a transgene in the target tissue is identified by a ___________?
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A. Transgene

B. Enhancer

C. Reporter

D. Promoter

1489. During anaerobic respiration the final electron acceptor in electron transport chain is:
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A. NADP+

B. Molecular oxygen

C. Sulfate

D. water

1490. Which of the following plant group first formed true leaves?
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A. Lycopsida

B. Pteropsida

C. Sphenopsida

D. Psilopsida

1491. heart beats 72 times in a male and _________Times in female in one minute.?
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A. 70 Times

B. 80 Times

C. 60 Times

D. 85 Times

1492. PCR technique was invented by__________?
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A. Karry Mullis

B. Boyer

C. Cohn

D. Sanger

1493. The human sperm was first discovered by ___________?
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A. Robert Hook

B. Von Baer

C. Anton van Leeuwenhoek

D. None of These

1494. Lungs are situated in the __________?
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A. Pericardial cavity

B. Abdominal cavity

C. Buccal cavity

D. Thoracic cavity
1495. The DNA fragments have sticky ends due to___________?
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A. Unpaired bases

B. Calcium ions

C. Endonuclease

D. Free methylation