The answer is; False
Soil color does not only reflect the amount of organic matter present in soil.
Soil color is used to derive information about processes occurring in soil. Soil color is produced or determined by the minerals composition and the organic matter content of the soil. Soil color can reflects the amount of organic matter present in soil, it can indicate the composition of soil, it can provide clues about the state of soil and it can reflect its age. Also, soil color can indicate the temperature and moisture properties of the climate of a particular region.
Answer:
E) Improve membrane fluidity
Explanation:
Cholesterol constitutes the basic structural element of the skeleton of cell membranes. Without their reinforcement, the membranes would become extremely fluid and lose their consistency. Cholesterol is found in the esterified membranes in its hydroxyl group (OH): with fatty acids, mainly oleic and linoleic, or as cholesterol sulfate. The cholesterol-sulfate polar group is disposed on one of the faces of the membrane that interacts with other polar groups in that area, while its bulky hydrophobic portion is embedded between the apolar parts of the lipids that form the membrane skeleton and They fulfill many other functions, among which the reduction in the permeability of protons and sodium ions, and their participation in signal transmission. Cholesterol is also essential in phagocytosis processes carried out by cells to capture many nutrients and, in general, for the function of cleaning up organic waste produced by macrophages.
The membranes must have a fluid structure so that the integrated proteins can move "horizontally" to interact with their ligands and with other proteins. The fluidity is given by unsaturated fat. With the excess of saturated fat, the membranes become rigid, but only with the necessary unsaturated fat the membranes are extremely fluid and very sensitive to temperature changes. Cholesterol stabilizes the structure of the membranes; In order for them to have the correct structure, they must have the correct proportions of saturated, unsaturated fats and cholesterol. The membranes produced in the laboratory without cholesterol are unstable to temperature changes, drastically modifying their fluidity against the small temperature changes that occur in the physiological range.
In addition to its functions in cell membranes, cholesterol is an important product that metabolism uses as a raw material to make other compounds:
*Bile salts
*Sex hormones
*Hormones of the adrenal cortex (corticosteroids)
*Vitamin D (Calciferol)
As Marta wants to explain the water cycle, it is best to do it via video simulation of the cycle. The correct option is C.
<h3>What is water cycle?</h3>
The water cycle depicts the consistent flow of water within the Earth's and atmosphere's ambience.
It is a complicated system with numerous mechanisms. Liquid water evaporates into water vapor, condenses into clouds, and falls back to earth as snow and rain.
Marta's best bet for explaining the water cycle is to use a video simulation of the cycle as video is the best way to understand the process.
Thus, the correct option is C.
For more details regarding water cycle, visit:
brainly.com/question/1151425
#SPJ1
Answer:
plants will die and decay, causing a decrease in dissolved oxygen; plants will block sunlight to deeper water.
Answer:
The physical stimulus is the only part of the test that is measureable, and therefore, knowable. The stimulus is our anchor for our estimate of the listener's perception.
