Explanation:
Hormone production and release are primarily controlled by negative feedback. In negative feedback systems, a stimulus causes the release of a substance whose effects then inhibit further release. In this way, the concentration of hormones in blood is maintained within a narrow range.
Answer:
Unit of force is called derived unit because the unit of force is derived from two or more than two fundamental units. i.e. kg*m(s*s).
Hope this answer is helpful for you.
The answer is A: Polyploidy is a condition in which an organism acquired more than the normal amount of chromosomes.
Hope this helps.
Answer:
Option D
Explanation:
Cyanobacteria preserve its photosynthetic pigments in the thylakoids which allows masking of green of chlorophyll a and other accessory pigment i.e phycobiliproteins (phycocyanin, allophycocyanin and phycoerythrin).
Chlorophyll a is mainly responsible for harvesting light for photosynthesis. Phycocyanin is blue in color, allophycocyanin is blue in color and phycoerythrine is red in color. These together harvest light in the green, yellow and orange part of the spectrum which cannot be used by other phytoplankton species
Hence, option D is correct
Explanation:
Amino acid-based hormones use a second messenger, cyclic AMP, but steroid hormones <u>complex inside the nucleus with a receptor and DNA to initiate protein synthesis</u>
Further explanation:
The endocrine system involves chemical signalling via the secretion of molecules called hormones into extracellular fluid. They bind to chemical receptors in order to cause specific changes in target cells, these lead to changes in the body's internal environment called homeostasis.
The endocrine system includes the thyroid, parathyroid, pituitary, pineal and adrenal glands along with other regions. The bone, adipose tissue, heart, pancreas and liver are a few of the regions of the body which show endocrine function.
Steroid hormones are mainly derived from the steroid molecule. They contain two types, sex steroids, and corticosteroids. Based on the receptors they bind to, these are further subdivided into:
- mineralocorticoids
- androgens
- glucocorticoids
- estrogens
- progestogens
They traverse the cell membrane and bind to intracellular reptors, forming complexes that regulate or switch on gene expression. The complex joins with hormone response elements, which are unique sequences of DNA to jump-start the transcription process within the cell.
Learn more about transcription at brainly.com/question/11339456
Learn more about DNA and RNA at brainly.com/question/2416343?source=aid8411316
#LearnWithBrainly
