During exercise, what happens to the rate and depth of breathing?
  • It increases
  • It decreases
  • It stays the same
  • It goes up and then down again
What is the waste gas released by aerobic respiration?
  • Carbon monoxide
  • Ozone
  • Carbon dioxide
  • Ammonia
In plants, energy is used to convert sugars into amino acids. Which of the following are made up from amino acids?
  • Proteins
  • Fats
  • DNA
  • Starch
One reactant in aerobic respiration is oxygen. What is the other?
  • Glucose
  • Waste
  • Urea
  • Amino acid
During exercise, the heart rate increases to increase blood flow to which part of the body?
  • The kidneys
  • The muscles
  • The ears
  • The eyes
What does respiration release?
  • Food
  • Waste
  • Energy
  • Light
What does aerobic mean?
  • With oxygen
  • With carbon dioxide
  • With hydrogen
  • With nitrogen
Energy from respiration is used for which of the following?
  • Muscle contraction
  • Building larger molecules from smaller ones
  • Maintaining a constant body temperature in fish and reptiles
  • Maintaining a constant body temperature in mammals and birds
Muscles store glucose in which form?
  • As starch
  • As glycogen
  • As protein
  • As oxygen
Energy is released from which cell organelle?
  • Nucleus
  • Cytoplasm
  • Chloroplast
  • Mitochondrion
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