Biology MCQs

1496 MCQs — Everyday Science MCQs (Page 38 of 150)

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Locomotory structures are not found in which of the following group?

A. Amoebas
B. Zooflagellates
C. Ciliates
D. Apicomplexans

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Hemoglobin molecule exhibits which structural organization of proteins___________?

A. Primary structure
B. Secondary structure
C. Tertiary structure
D. Quaternary structure

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In an aqueous environment the most stable tertiary conformation is that in which _________ amino acids are buried inside the conformation?

A. Hydrophobic
B. Hydrophilic
C. Basic
D. None of these

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Which of the following statement is incorrect about RNA_________________?

A. The pentose sugar in it is ribose.
B. It contains adenine guanine thymine and cytosine
C. It is present in the nucleoli
D. It may be folded back on itself to give double helical characteristics.

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Protein coasts of viruses are synthesized in____________?

A. Lytic cycle
B. Lysogenic cycle
C. Both a & b
D. All of these

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Each turn of DNA contain ____________ nitrogenous base pairs?

A. 5
B. 10
C. 20
D. 25

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Membranes of the grane are sites where?

A. Oxygen is stored
B. Food is stored
C. Sunlight is trapped
D. Co2 is stored.

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Antibodies play important role against microorganisms and other pathogens to which type of proteins do they belong________?

A. Globular proteins
B. Fibrous proteins
C. Both a and b
D. None of these

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The simplest of oxygen producting photosynthetic organisms are____________?

A. Algae
B. Bacteria
C. Cyanobacteria
D. Chlamydomonas

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Amphoixus is a__________?

A. Chordate
B. Protochordate
C. Lower chordate
D. All of these

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