The right answer is A: Enzyme activity decreases at these temperatures
Temperature influences the activity of the enzymes responsible for assisting with chemical reactions in the Calvin cycle. When temperatures are low, enzyme activity is slow. As temperatures increase, the activity of the enzymes that assist in these chemical reactions also increases to a certain extent, which is the optimal response to temperature. It is at this point that the rate of photosynthesis of plants is the highest.
As the temperature continues to rise beyond this point, the enzyme activity decreases until photosynthesis stops. It is important to remember that the rate of photosynthesis in C3 plants is higher in cold conditions, whereas it is the opposite in C4 plants.
<span>In order for the muscle fatigue to end the muscle cells must be provided with oxygen to 'burn' the lactic acid.
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Answer:
Explanation:
Spongy bone is also called cancellous or trabecular bone. It is found in the long bones and it is surrounded by compact bone. ... Trabeculae are spaces created in the tissue by thin areas of osteoblast cells. As a result, trabecular bone has about 10 times the surface area of compact bone.
Veins carry blood away from the heart, while arteries carry blood to the heart. Veins are more muscular than arteries.
<h3>What is
Veins?</h3>
Veins transport deoxygenated blood to your heart and are frequently found near your skin. Because veins lack a muscular layer like arteries, they rely on valves to keep your blood flowing. Veins begin as tiny blood vessels called venules and grow into full-size veins as they get closer to your heart.
Veins are blood vessels that carry blood to the heart in humans and most other animals. Most veins return deoxygenated blood from the tissues to the heart; the pulmonary and umbilical veins, on the other hand, return oxygenated blood to the heart.
Veins transport blood to the right side of the heart. The pulmonary arteries transport blood to the lungs, where it receives oxygen.
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