<h3>1.<u> Answer;</u></h3>
A. lipid
<h3><u>Explanation;</u></h3>
- <u><em>Lipids are among the four biomolecules, others being nucleic acids, carbohydrates, and proteins.</em></u>
- <u><em>Lipids contain hydrocarbons and make up the building blocks of structure and function in living cells. Lipids includes; fats, oils, waxes and certain vitamins.</em></u>
- <u><em>Lipid can be used for energy storage in the form of fat in animals. Additionally, lipids can be used as heat insulation as fat or adipose tissue under the skin reduces heat loss.</em></u>
<h3>2. <u>Answer;</u></h3>
B. The cell membrane contains cholesterol molecules.
<h3><u>Explanation;</u></h3>
- <em><u>The structure of the lipid bi-layer allows small, uncharged substances such as oxygen and carbon dioxide, and hydrophobic molecules such as lipids, to pass through the cell membrane, down their concentration gradient, by simple diffusion.</u></em>
- <u><em>Carbon dioxide and oxygen are molecules that can move across the lipid bi-layer without the help from membrane proteins or integral proteins. They are non-polar molecules and thus can easily pass through the hydrophobic interior of a membrane.</em></u>
A-
1. Like water, other types of matter like carbon, oxygen , and nitrogen go through physical and chemical changes.
2. The total mass of the matter is the same before and after a change this is known as the laws of conservation of mass.
3. Most of Earths water is in the ocean.
4. The path water follows as it moves from Earth through the atmosphere and back to Earth is called the water cycle.
5. The three processes involved in the water cycle are evaporation, condensation, and precipitation.
a. Water changes from a liquid to as gas during the process of vaporization.
b. water vapor changes back into liquid water during condensation.
c. . Rain, snow, sleet, and hail are examples of precipitation.
Honestly that's all the answer I can put up with right now but I hope I have come to do you good and helped you through :)
Answer:
Molecular arrangement is the property of water remains unchanged when it recycles in the atmosphere
.
Explanation:
In the water, Molecular arrangement remains same when it recycles in the atmosphere
. A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent.
This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons. All of the electron pairs—shared and unshared—repel each other. Thus it is the element or property which remains in same condition.
Answer:
B. The enzymes will be activated by the change in pH.
Explanation:
