Answer: Option C.
Increased numbers of Na+/K+ pumps. Decreased numbers of Na+/K+ pumps.
Explanation:
Aldosterone is a steroid hormone produced by the zona glomerulosa of the adrenal cortex.
It activates sodium and potassium channels in the principal cells of distal tubules, collecting ducts. It acts as electrolytes in the distal tubules. It increase sodium reabsorption from the urine, sweat and duct.
Answer:
Acting on the mineralocorticoid (MR) receptors of the main cells in the distal convoluted tubule, which increases the permeability in its luminal apical membrane to potassium and sodium and activates the basolateral Na + / K + pumps, stimulating the hydrolysis of ATP that leads to phosphorylation of the pump, causing a conformational change in this membrane protein. The phosphorylated form of the pump has a low affinity for Na + ions, thereby expelling them into the extracellular space between each epithelial cell in the tubule. This will lead to reabsorption of these ions (and the water they carry) into the adjacent blood capillaries, thus concentrating the concentration of Na + in the blood. Similarly, the concentration of K + (potassium) ions in the extracellular space (which is precisely one of the signals collected by Aldosterone secretion); This means an intracellular K + increase, for which potassium channels are opened mainly in the apical region of the cell membrane, excreting this ion towards the luminal area of the tubule, where it will be incorporated into the urine. (Chloride anions are also reabsorbed in conjunction with sodium cations to maintain the electrochemical balance of the system.)
Aldosterone stimulates H + secretion by cells interspersed in the collecting tubule, regulating plasma levels of bicarbonate (HCO3−) and its acid-base balance.
Explanation:
Aldosterone is one of the most important pillars of the renin angiotensin aldosterone system, in this way we are saying that it is part of one of the regulators of blood pressure.
When blood pressure decreases, the blood vessel proprioceptors capture the drop in pressure and thereby activate the presence of aldosterone in the body.
Aldosterone is a mineralocorticoid that generates an increase in sodium in the lumen of vessels by dragging masses of water. By dragging water due to a difference in concentrations of said ion, the blood vessel volume increases.
By increasing the blood volume of the vessel, it generates more pressure on the walls and therefore increases the blood pressure, compensating for the hypovolemia for which this route began.
-the least informative property of a mineral
-measured using the Mohs scale
-the way a mineral splits when stressed
Answer: measured using the Mohs scale
Explanation:
Hardness is defined as ability of the surface to undergo resist deformation.
The degree of hardness is determined by observing the comparative ease or difficulty which which one mineral is scratched by another.
Color is the least informative property of a mineral.
Mohs scale of hardness gives a rating of 1 to talc which is categorized as most soft and rating of 10 to diamond which is categorized as most hard.
Hardness is the physical property of mineral measured using the Mohs scale. Hardness is property of mineral to resist scratch. On Mohs scale minerals are classified according to their hardness. Hardest mineral on the scale is Diamond. While the softest mineral is Talc. Different test are done to test the hardness of minerals. These includes, test of scratch from finger nail, test of scratch from knife/blade and test of mineral by a piece of glass. On Mohs scale minerals are classified according to their hardness:
10. Diamond
9. Corundum
8. Topaz
7. Quartz
6. Orthoclase
5. Apatite
4. Fluorite
3. Calcite
2. Gypsum
1. Talc
B) Saturated fats have more carbon atoms than unsaturated fats.
Eliminate
C) Saturated fats have only single bonds on all the carbon atoms.
D) Saturated fats have only double and triple bonds on the carbon atoms.
The fluctuations in abiotic cycles can influence the population in many ways. The population of a particular area depends on the various abiotic cycles such as nitrogen cycle, carbon cycle, phosphorous cycle. The changes in these cycles affects the life of population. Fluctuation results in hibernation of species. Some of the organisms migrate to another place in search of normal environment. The early breeding results in creating problems. It disturbs the ecological balance by using the limited supply of resources. The fluctuation in phosphorous cycle can affect the aquatic population. As the dependency of population on abiotic cycles is as important as the biotic factors the fluctuations can cause many problem.