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General Science MCQs

Q391: In living organisms energy is stored in a special molecule called?

  • A) ATP
  • B) NADH
  • C) RNA

Q392: Conversion of free energy into different forms by living organisms is called?

  • A) Biophysics
  • B) Biomechanics
  • C) Bioenergetics

Q393: The only source of energy on earth is ____?

  • A) Moon
  • B) Star
  • C) Sun

Q394: In the human body there are more than _____ known enzymes.

  • A) 800
  • B) 1000
  • C) 1200

Q395: Enzyme changes in pH can cause enzymes to ______?

  • A) Denature
  • B) Activate
  • C) Inhibit

Q396: As temperature increases, initially the rate of reaction will _____?

  • A) Decrease
  • B) Remain constant
  • C) Increase

Q397: Enzyme activity decreased by ______?

  • A) Activator
  • B) Substrate
  • C) Inhibitor

Q398: Small portion of enzyme where substrate attach with enzyme called _____?

  • A) Binding site
  • B) Active site
  • C) Catalytic site

Q399: Activity of enzymes can be enhanced by ____?

  • A) Activator
  • B) Inhibitor
  • C) Substrate

Q400: In constructive reaction _____ molecules are formed.

  • A) Small
  • B) Medium
  • C) Large