Answers:
Hormones are chemical messengers....
Endocrine glands secrete hormones...
The pituitary gland plays...
is produced by the adrenal glands...
the gland will produce fewer amounts of the hormone...
produce chemicals called paracrine factors...
blood is called the thyroid.
Steroid hormones are synthesized from cholesterol, while nonsteroid hormones are synthesized from modified amino acids and small peptides. Non-steroid hormones are not lipid-soluble and therefore they need to bind to a receptor on a cell membrane; while steroid hormones can diffuse through the cell membrane.
Explanation:
Hormones are signaling molecules synthesized by glands. The endocrine glands include the adrenal glands, pineal gland, thyroid gland, parathyroid gland, pituitary gland, ovaries, testes, pancreas and hypothalamus. The pituitary gland is an endocrine gland that secretes hormones capable of stimulating the adrenal glands in order to produce steroid hormones. Hormone levels are often modulated by negative feedback, by which high-hormone levels reduce their own production. Paracrine factors (also known as growth and differentiation factors) are proteins that can diffuse across small distances in order to induce responses in neighboring cells. The thyroid gland secretes hormones involved in regulating metabolism and growth. Moreover, the thyroid gland also secretes calcitonin that regulates calcium levels in the blood.
Mitosis is the cell division of somatic (body) cells. It goes through PMAT once. It starts with one diploid cell and the end is two diploid cells. The outcome is always two identical copies of the cell. This is how we replace any cells that die. Meiosis is the division of gametes (germ/sex cells). This is how siblings look differently. It will do through PMAT twice. Starts off with one diploid cell then goes to two diploid but ends up with four haploid. There is a crossing over moment during Prophase I so that it can share genes (this is how you get a genetic variety for the offspring and how siblings have different features).
I think b. Proteins are polymers of amino acids is the correct answer
