Biology - Mock Test 271

Question 2701

An activated enzyme consisting of polypeptide chain and a cofactor is called?

A) Apoenzyme B) Holoenzyme C) Activated enzyme D) Both b and c

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Question 2702

In which of the following location enzymes controlling cellular respiration are present?

A) Nucleus B) Chlorophast C) Milochondria D) Ribosome

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Question 2703

Sebum produced from sebaceous glands in a mammal helps in?

A) Protection against micro organisms B) Temperature regulation C) Excretion D) All of these

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Question 2704

Which one of the following is most likely to occur in an animal during winter?

A) Activation of sweat glands B) Dilation of skin blood vessels C) Panting D) Thermogenesis

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Question 2705

The one that stores calcium?

A) Sarcolemma B) Sarcoplasm C) Sarcoplasmic reticulum D) Cytosol

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Question 2706

Sleep movements are a type of?

A) Turgor movements B) Growth movements C) Tactic movements D) Paratonic movments

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Question 2707

The one which is a weed killer?

A) IAA B) NAA C) 2 4-D D) GA

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Question 2708

The type of learning in which there is loss or decrease in response to repeated stimuli?

A) Imprinting B) Habituation C) Latent learning D) Insight learning

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Question 2709

The cells present in testes and secrete testosterone are?

A) Sertoli cells B) Germinal cell C) Interstitial cells D) Spermatocyte

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Question 2710

Exposure to low temperature stimulates plants to flower. This is called?

A) Photoperiodism B) Thermotropism C) Vernalisation D) Thermoregulation

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