Answer:
Low,high
Explanation:
Thyroxine is a complex organic compound containing iodine. Thyroxine concentration in the body is kept to the required levels through a negative feedback mechanism. The production of thyroid stimulating hormone is regulated by thyroxine. An increase in thyroxine inhibits the pituitary gland which responds by secreting less thyrotropic hormone. This in turn reduces the activity of thyroid gland leading to a drop in thyroxine production. A low thyroxine level removes the inhibitory influence on the pituitary so that more thyroid stimulating hormone is produced.
Answer:
ATP, water and carbon dioxide are produced.
The cell membrane is not a solid structure. It is made of millions of smaller molecules that create a flexible and porous container.
Explanation:
Answer:
Microtubules have an inner diameter of 25 nm and an outer diameter of 30 nm.
Explanation:
Microtubules is a microscopic tubular structure that is present in the cytoplasm of cells; they are polymer structures that form part of the cytoskeleton that gives shape to cytoplasm of eukaryotic cells and some prokaryotic cells. A microtubules can be as long as 50 nm in diameter. The average inner diameter of microtubules is 25 nm while that of the outer diameter is 30 nm.
