A person who sprints for 45 seconds will obtain most of his or her energy from muscle glycogen.
<h3>Energy metabolism during sprints</h3>
During sprinting or highly intense exercise activities, blood glucose is rapidly consumed. Rapid consumption of blood glucose may breach the blood glucose set point.
In order to maintain blood glucose homeostasis, glucose stored as glycogen in the muscles is converted back to glucose. The glucose is then utilized to produce ATP for the sprint or exercise.
Thus, a person who sprints for 45 seconds will have to obtain most of their energy from the glycogen stored in the muscles.
More on glucose metabolism can be found here: brainly.com/question/4707439
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A) muscle triglycerides.
B) plasma free fatty acids.
C) blood glucose.
D) muscle glycogen.
The answer is B. They cannot produce enough heat to keep their bodies warm.
He will gain muscle so that's a improvement
Answer:
amoeba
Explanation:
Amoebas are organisms that are just basically jelly and a nucleus. There's an attached picture.
That "jelly" is called protoplasm; it's the fluid that makes up the amoeba's body.
Why not A: vacuoles are just protoplasm, no nucleus. they're not organisms.
Why not C: bacteria have no nucleus; they have a nucleoid region.
Why not D: a pseudopodium is an extension of an amoeba, kind of like a retractable arm.
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