Practice MCQ Questions and answers on Biology-GK

A. Epiglottis

B. Pharynx

C. Trachea

D. Larynx

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

A. Diastase

B. Substrates

C. Co-enzymes

D. None of the above

A. Hormones

B. Vitamins

C. Steroids

D. Enzymes

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