Answer:
A !!!!!!!!!!
Explanation:
Progesterone is a hormone released by the corpus luteum in the ovary. It plays important roles in the menstrual cycle and in maintaining the early stages of pregnancy. It may also be involved in the growth of certain cancers.
The myelin sheath that covers many cns axons is formed by oligodendrocytes.
Oligodendrocytes are type of neuroglia (non-neural cells found in central nervous system) with protective, trophic and supportive role. Their function is to insulate axons (with myelin sheath), in the central nervous system (CNS) which is, equivalent to the function performed by Schwann cells in the peripheral nervous system (PNS).
Explanation:
Most of Earth's carbon is stored in rocks and sediments.
Answer:
Mitochondria are known as the powerhouse of the cell because it is responsible for the extracting energy from food through cellular respiration. The energy is released in the form of adenosine triphosphate (ATP) it is an energy currency of the cell.
Explanation:
Answer:
The correct answer is option C. One system is switched on while the others are switched off is a false statement.
Explanation:
A biological energy system is a set of biochemical reactions known as metabolic processes that are concerned with the energy flow in an organism. In these processes energy converts into the ATP that is helpful in all types of cellular or muscular activity.
In the biological energy system, multiple or more than one system can be active at a time its not necessary that one system has to switch off while other is on.
Thus, the correct answer is option C. One system is switched on while the others are switched off is a false statement.
