Practice MCQ Questions and answers on Biology-GK

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26.
What prevents food from entering the windpipe?

A. Epiglottis

B. Pharynx

C. Trachea

D. Larynx

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27.
Which of the following is true of enzymes?

A. Enzymes lowers the activation energy for the chemical reaction

B. Enzymes speed up the rate of a chemical reaction

C. Both A & B

D. Neither A nor B

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28.
The substances, which assist enzymes act, are called

A. Diastase

B. Substrates

C. Co-enzymes

D. None of the above

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29.
Biological catalysis in living organisms are known as

A. Hormones

B. Vitamins

C. Steroids

D. Enzymes

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30.
Which of the following is not a function of saliva?

A. Contains fluoride to harden the tooth enamel

B. Moistens food and helps stick it together to make it easier to swallow

C. Begins the chemical breakdown of starches

D. Helps clean the mouth

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Practice MCQ Questions and answers on Biology-GK

26. What prevents food from entering the windpipe?

Answer & Solution

27. Which of the following is true of enzymes?

Answer & Solution

28. The substances, which assist enzymes act, are called

Answer & Solution

29. Biological catalysis in living organisms are known as

Answer & Solution

30. Which of the following is not a function of saliva?

Answer & Solution

Read More Section(Biology)

26.
What prevents food from entering the windpipe?

27.
Which of the following is true of enzymes?

28.
The substances, which assist enzymes act, are called

29.
Biological catalysis in living organisms are known as

30.
Which of the following is not a function of saliva?