False, spermatogenesis has nothing to do with egg cells.
Answer:
A.
Explanation:
Passive transport is defined as the movement of ion and other molecules through cell membrane without any energy input while active transport is the movement of ions and other molecular substances across cell membranes with an energy input which allows, molecules to move from a region of lower concentration to a region of higher concentration.
Uptake of iodide ions by thyroid cell is an active transport which is mediated by sodium/iodide symporter (NIS) protein, found in basolateral membrane of thyroid follicular cells. As the concentration of iodide ions is higher in thyroid cells, active transport make movement of iodide ions form extracellular fluid (lower concentration) to thyroids cells (higher concentration).
Hence, the correct option is A.
Answer:
The hypothalamus is responsible for maintaining the body's internal balance (homeostasis) by stimulating or inhibiting major bodily functions such as the heart rate and blood pressure, body temperature, fluid and electrolyte balance, appetite and body weight, sleep cycle and function of the gastrointestinal track. The hypothalamus is also considered the master regulator of the endocrine system; Regulatory hormones secreted by the hypothalamus are transported by the hypophyseal-portal system to the anterior and posterior pituitary, prompting the release of secondary hormones that can affect various organ functions.
Explanation: