a scale-model mound made of the same materials that make the real hill
Option (A) Torpor is the correct answer
Organisms that undergo hibernation have the ability to slow down their metabolism so as to lower the core temperature. This process is known as Torpor.
<h3>Why is torpor important for organisms undergoing hibernation?</h3>
Torpor is a state in animals where they lower all their metabolic activities and bodily functions so as to keep the body temperature low.
It is done by the animals to conserve resources in conditions where scarcity of food is there.
Some birds undergo torpor to conserve fat in the body.
Some animals use this technique of torpor to survive competition with other species.
These organisms come back to normal physiology when the conditions become favorable.
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Answer:
Active transport requires cellular energy for substances to cross the cell membrane; passive transport does not.
Explanation:
Active Transport works against the concentration gradient and therefore needs energy to make it happen
Passive transport such as Diffusion and Osmosis uses the properties of natural movement of particles which moves the molecules from areas of high concentration to areas of low concentration or down the concentration gradient and happens passively without the need for energy
Answer and Explanation:
The cell was placed in a hypertonic solution. Glucose is a monosaccharide while starch is a polysaccharide. The concentration on the outside is higher compared to that on the inside. The cells have cell membrane that is semi-permeable.
Movement of molecules is dependent on the concentation gradient. However, the size of molecules determine the diffusion rate. Small and light molecules diffuse faster than large and heavy molecules thus glucose diffused faster than starch.
The cell membrane being permeable suggested that it allows molecules of small sizes to pass but not large ones.
