21) Fatty-acid molecules provide MOST of the energy for A) high-intensity, : 1201293

21) Fatty-acid molecules provide MOST of the energy for
A) high-intensity, : 1201293.



21) Fatty-acid molecules provide MOST of the energy for

A) high-intensity, short-term activity.

B) long-term activity such as hiking.

C) participation in a marathon.

D) sprinting in a 1500-meter race.


22) Which of the following BEST describes how ATP provides energy to the body’s cells?

A) Energy is released when a phosphate group is cleaved from the ATP molecule.

B) Energy is released when two molecules of ATP combine.

C) Energy is released when ATP is transported out of the cell membrane.

D) Energy is released when adenosine binds to three phosphate molecules.


23) The major fuel source used by the working muscle during long-duration physical activity is

A) amino acids.

B) fatty acids.

C) glycogen.

D) glucose.


24) Which of the following is NOT a reason fat becomes an energy source for trained athletes?

A) increases the number and activity of various enzymes involved in fat metabolism

B) improves the ability of muscles to store fat

C) improves the ability to extract fat from the blood during exercise

D) replaces carbohydrates as an energy source during prolonged, intense training


25) Where in the body do we find the greatest storage of potential energy?

A) muscle glycogen

B) blood glucose

C) muscle protein

D) body fat

26) At rest, the body’s fuel source is primarily

A) protein.

B) carbohydrate.

C) fat.

D) amino acids.


27) George plays basketball for his high school team, and he is concerned that he is not consuming enough kilocalories to support his activity. Which of the following would be the BEST indicator that he is not consuming adequate kilocalories?

A) impaired performance on the court

B) weight loss

C) low blood glucose levels

D) low hemoglobin


28) Elisa is a gymnast who trains on average for two hours each day. She supports her daily activity by consuming 2,500 kilocalories per day. What is the minimum number of kilocalories she should consume from carbohydrates?

A) 1,050 kcal

B) 1,125 kcal

C) 1,580 kcal

D) 1,790 kcal


29) When does the body experience the highest rates of glycogen storage?

A) at rest

B) during high-intensity exercise

C) a few hours after exercising

D) 30 hours after exercising


30) Petra is a long-distance track athlete who would like to optimize her glycogen stores. If she weighs 132 pounds, what is the minimum amount of carbohydrate she should consume to achieve this goal?

A) 250 grams

B) 290 grams

C) 360 grams

D) 800 grams


21) Fatty-acid molecules provide MOST of the energy for
A) high-intensity, : 1201293

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