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soldier1979 [14.2K]
3 years ago
14

Oxygen moving from the bloodstream into a cell down a concentration gradient is a form of

Biology
1 answer:
devlian [24]3 years ago
7 0
The correct answer is D: Passive transport

This means that the oxygen is moving through the cells without any energy input. If energy was used and involved then it would be active. This way, it is powered by entropy and not energy.
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Why are producers important to energy transfer within an ecosystem?
slamgirl [31]
<span>Answer: There are only two real sources of energy on the earth. One comes from geothermal from the creation of the earth and the other comes from the sun. You can say wind and nuclear or water, but water's movement is related to the tectonic activity and shaping of the earth and its spin, wind comes from unequal heating of the earth by the sun and nuclear energy comes from isotopes that were formed by a star. So producers are able to harness one of those two energy sources, the sun. Trees and plants are so common because they are using free energy, they have discovered a way to get something for nothing essentially. Predators can use the nutrients they make to supply their own energy but in the end everything boils down to the producers ability to make energy from the sun.</span>
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An enzyme known as amylase is found in the saliva of humans. This enzyme helps to begin the process of digesting starch molecule
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4 years ago
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Novay_Z [31]
The maximum percentage of net spendable income that should be set aside for transportation is : A. 15 %

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3 0
3 years ago
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Runners only have enough stored ATP in their muscle cells to run for about five seconds. Which answer correctly explains how the
Fynjy0 [20]

Answer Options:

A: The runner's body will convert stored fat molecules into energy.

B: The runner's body will create the needed energy by breaking down proteins.

C: The runner's body will supply the needed energy by producing starch.

D: The runner's body will produce the energy by activating the Golgi apparatus.

Answer:

A: The runner's body will convert stored fat molecules into energy.

Explanation:

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If you exercise for a longer period such as during long distance running, your body will use more fat and less glucose in an attempt to conserve the limited glucose stores in case exercise intensity increases and oxygen availability is is reduced.

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