It is often useful for scientists to study a population of cells that are all at the same stage of the cell cycle.
<h3>Why the discovery of cyclins and cdks was enabled?</h3>
The discovery of cyclins and cdks was enabled by studying frog eggs that divided synchronously after fertilization; extracts from the embryos were thus representative of the cell-cycle stage at which the extract was made.
Researchers have devised means to synchronize asynchronous populations of cultured cells. for example, serum starvation deprives cells of mitogens and blocks cells in the g0/g1 phase of the cell cycle.
Therefore, It is often useful for scientists to study a population of cells that are all at the same stage of the cell cycle.
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There are at least 900 different phytochemicals, which are nonnutritive compounds in plant foods.
2. Healthy People 2020 includes a set of disease prevention and health promotion objectives for the nation to work towards.
3. Nutrients can be classified as macronutrients, micronutrients, and water.
4. Reactions that occur within cells of the body to sustain life can be referred to as metabolism.
5. Fiber is/are the portion of plant foods not fully broken down in the digestive tract.
6. For many adults, convenience is one of the primary factors influencing food choices.
7. While it is generally better to obtain nutrients from food, some people may require supplements to meet nutrient needs.
8. Obesity refer(s) to a body mass index of 30 or higher; it is a condition affecting over 35 % of American adults. refer(s) to a body mass index of 30 or higher; it is a condition affecting over 35% of American adults.
9. Kilocalories are units used to measure the amount of energy in foods.
(the answers are bolded)
Answer:
Alpha-1
Explanation:
Adrenergic receptors are the integral proteins present in the postsynaptic plasma membranes. These receptors are activated when the neurotransmitter norepinephrine and the hormones norepinephrine and epinephrine bind to them. The alpha 1 adrenergic receptors are found in the smooth muscle fibers of blood vessels that serve the salivary glands, skin, and kidneys. These receptors are also found in the radial muscle of iris of the eye as well as in the sphincter muscles of the stomach and urinary bladder.
They exert excitatory effect and lead to contraction of smooth muscles of the blood vessels, dilation of pupil, and closure of sphincters of the bladder.
<span>Where in your body might you see the universal solvent property of water working in to your stomach, brain,kidneys, eye, and mouth.
Answer will help u
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A control group is going to be something that you don’t “experiment on or change. It is grown or watched under normal conditions. This way you have a medium to say how things are “supposed” to go.
The experimental group is going to be where you “experiment” and change the normal conditions to see what outcome will occur ( under different conditions then normal )
