Any non-living factor that is used or present in an ecosystem
Common ones are sunlight oxygen nitrogen climate temperature pH levels and water
Answer:
B) cAMP
Explanation:
Phosphodiesterase is an enzyme that breaks a phosphodiester bond, for example in molecules such as cAMP and cGMP. So, phosphodiestarases are are regulators of signal transduction: regulate the duration of signaling pathway.
Caffeine is central-nervous-system stimulant and the mechanisms of its action usually are: mobilization of intracellular calcium or inhibition of specific phosphodiesterases.
There are many known positive outcomes of genetic engineering both in plant and animals. Among these outcomes include: a. elimination of diseases; b. most desirable traits guaranteed to exist; c. crops that can be pest and disease resistant; d. longer shelf life for plants.
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Answer:</h2>
I believe the correct answer is D. React to stimuli from outside the body.
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Explanation:</h2>
Hormones are types of proteins that produce responses hand in hand with neurons but they are much slower and longer lasting. They can act on the same cells and in that instance they will be called autocrine hormones. Those that act on neighbouring cells are called paracrine hormones while those that act on far away cells are called endocrine hormones.
<h2>Further Explanation:</h2><h3>a. Initiate behavior and reproduction:</h3>
This is a function of hormone(s). Hormones such as testosterone can initiate both behavior of an organism and also stimulate reproduction. Testosterone causes maturation of sex features and sperms in males to initiate reproduction. Other hormones with such functions include: Estrogen and adrenaline.
<h3>b. Coordinate the production and use of energy:</h3>
Some hormones conduct this function by regulation metabolism in the body. These include: Insulin in intake of glucose for energy and glucagon in maintaining blood glucose levels. Corticosterone also responds in stress to maintain energy.
<h3>c. Maintain nutrition and metabolism:</h3>
Nutrition can be maintained by hormones such as ghrelin that stimulates appetite, insulin in intake of glucose, leptin and glucagon.
<h3>d. React to stimuli from outside the body</h3>
This is not a function of a hormone but rather the function of a neuron. Neurons have specific structures called denrites that recieve signals/stimuli from outside the body then convert them to nerve impulses that are transmitted to the brain which produces another impulse to be taken to a specific site to produce a desired response.
Level: High Schoo;
