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den301095 [7]
1 year ago
7

During exercise, what do muscle cells immediately use as the energy source for contractions?.

Biology
1 answer:
blagie [28]1 year ago
6 0

During exercise, muscle cells immediately use ATP as the energy source for contractions.

The only immediate source of energy for muscular contraction is ATP. Within muscle fibers, ATP is replenished by creatine phosphate (anaerobic respiration), glycolysis (anaerobic respiration), and cellular respiration (aerobic respiration). As the duration and intensity increase, carbohydrates (glucose/glycogen) become the primary source of fuel. If exercise is sustained for an extended period of time, fatty acids will be used as a fuel source when glycogen stores are nearly depleted.

ATP is a form of instant energy. The body cannot obtain energy directly from glucose. Glucose is not a direct source of energy. Instead, the body uses the energy released from the breakdown of glucose to drive ADP phosphorylation.

To learn more about ATP, here

brainly.com/question/14637256

#SPJ4

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16. does life generate spontaneously?
gtnhenbr [62]

Answer:

YES

Explanation:

Because the theory of spontaneous generation held that living creatures could arise from non-living matter and that such processes were common place and regular.

*Hope this answer is helpful

7 0
3 years ago
ammals that live in the Arctic Ocean have a large amount of blubber, which is a fatty tissue just beneath the skin. Which statem
frosja888 [35]
The arctic environment is deathly cold, hence the thick blubber on animals so they can handle freezing temperatures
4 0
3 years ago
The amount of time spend in the bathtub and the temperature of the bath water
lesya692 [45]
Hihi!

<span>In general the water should be kept around 100-105 degrees fahrenheit! You should only spend around 10 minutes in the bath at a time, long bathes and showers damage your skin and take out all the moisture in your skin as well!

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5 0
3 years ago
During the Carboniferous period, plants and animals grew very large due to high concentration of A. oxygen in the atmosphere. B.
Alja [10]

Answer:

Option A, oxygen in the atmosphere

Explanation:

The highest level of oxygen reached during this phase of the geological cycle of earth. The oxygen level in  Carboniferous  period accounted for 35%  as compared to 21% of oxygen in the atmosphere in present time.

Due to high oxygen content, the giant and wide varieties of terrestrial animal and plant species evolved. For example – size of insects and carwlies increased, plant became extremely giant, increase in number of tree ferns etc.

7 0
3 years ago
Read 2 more answers
A dot is drawn every second to show the position of a toy car coasting up a ramp. Which statement best describes the motion of t
lbvjy [14]

It is speeding up because more distance is covered every second.

Explanation:

The car can be described to be speeding up because more distance is covered every second.

From what we understand about velocity and acceleration, the car is accelerating through the ramp.

It's velocity is increasing with every second it covers.

This will invariable reduce the time between each distance covered.

Originally, the toy car starts with a low initial velocity or speed. As it gains acceleration, the speed will increase and more distance covered per seconds.

This is why the dots clustered towards the end of the diagram. The positions are getting closer and distance reducing per seconds.

Learn more:

Speed brainly.com/question/1548911

#learnwithBrainly

7 0
3 years ago
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