ESS 302 Exam II review

What is the primary role of the mitochondria in the cell?

• To store genetic information
• To synthesize proteins
• To regulate cell division
• The primary role of the mitochondria in the cell is to produce energy in the form of ATP.

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NGSS.HS-LS1-7

NGSS.HS-LS2-5

Which of the following is an example of an endergonic reaction?

• Breakdown of ATP

• Synthesis of ATP

• Oxidation of glucose

• Muscle contraction

Which molecule is oxidized during a redox reaction?

• The one that gains an electron

• The one that loses an electron

• The one that gains a hydrogen atom

• The one that loses a proton

What is the net ATP gain from glycolysis starting with one glucose molecule?

• 1 ATP

• 2 ATP

• 3 ATP

• 4 ATP

Which enzyme adds a phosphate group to a molecule during metabolism?

• Dyhydrogenase

• Kinase

• Isomerase

• Oxidase

What is the primary energy source of ATP during the first 5 seconds of high-intensity exercise?

• Glycolysis

• Krebs cycle

• Cori cycle

• Phosphagen (ATP-PC)

Which of the following is true regarding oxygen deficit at the onset of exercise?

• ATP production is delayed

• Oxygen uptake to steady state is immediate

• ATP is primarily produced by anaerobic means

• Homeostasis is achieved instantly

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NGSS.HS-LS2-3

The lactate threshold

• Happens at low intensity

• Increases with resistance trianing

• Increases with aerobic training

• Decreases with aerobic training

What is the respiratory exchange ratio used for?

• To assess blood oxygen levels in the body.
• To measure lung capacity during exercise.
• Determine the type of fuel being metabolized.

• To evaluate heart rate variability during rest.

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NGSS.HS-LS2-3

What is the equation for cellular respiration?

• C₆H₁₂O₆ + 6O₂ --> 6CO₂ + 6H₂O

• C₆H₁₂O₆ + 6CO₂ --> 6H₂O + CO₂

• 6 CO₂ + 6H₂O --> 6O₂ + C₆H₁₂O₆

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NGSS.HS-LS1-7