Answer:
The correct answer would be the proton gradient.
Oxidation of NADH and FADH₂ release high energy electrons which are passed through the electron transport chain.
Some of the energy of these free electrons are used to form a proton gradient across the inner membrane of mitochondria in which the enzyme ATP synthase is placed.
The protons from the inter-membrane space pass down the concentration gradient through ATP synthase.
The movement of protons (charged particles) down the concentration gradient produces energy some of which is used by ATP synthase in order to phosphorylate ADP into ATP.
b. the mutation remains with the cell and is passed on in division
c. the protein is psubstituted with a mutation
d. the mutation becomes part of the protein
b. essential.
c. facilitated.
d. inorganic.
O 30%
O 38%
O 50%
O 63%
A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. The porosity of the soil is 50%. Thus, option C is correct.
Forest soil has more moisture than sandy soil therefore the types of plants that are grown in soil of forests are more qualitative and more superior than the sandy plants which are facing certain limitations and facing certain situations.
Forest soil supports plant life, but sandy soil does not support any plants. Forest soil produces more superior life and the plants life are found in the forest area and the sandy plants are lesser found in the sandy areas.
The reason for vegetation in forests is because of the supportive factors that are involved in the good plants life. The soil type that is the richest in organic material would be a dark-colored soil. Decaying matter turns brownish-black which makes this type of soil having a dark color even almost black.
Therefore, A dry soil sample has a volume of 500 mL. After 400 mL of water are added to the soil, the soil becomes saturated with 150 mL of surface water left on top. The porosity of the soil is 50%. Thus, option C is correct.
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Answer:
answer is 50
Explanation:
i gess on quiz and it was correct
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b. they control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food.
c. they improve the muscular strength of the organs involved in digestion.
The correct answer is B. They control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food.
Explanation:
In biology, sphincters are a type of muscle that can regulate the passage of substances. In the digestive system, sphincters can be found mainly in the upper and lower zone of the stomach, between the small and large intestine and at the anus. In all cases, the sphincters regulate the amount of digested food or other substances that pass through the organs and also prevents the substances that have already passed to a new organ or zone of the digestive system can go backward.
Due to this sphincters are essential for regulating the movement of food and other substances to be correctly digested and to pass through different organs. According to this, the key function of these muscles is "control and direct the quantity of food passing through the digestive organs and prevent backward movement of partially digested food".