The component that is LEAST likely to be important in holding the components of a biological membrane together is C: "covalent interactions between the phospholipid and protein components of the membrane".
The biological membrane is made up of a lipid bilayer, with the hydrophobic tails of the phospholipids facing inward and the hydrophilic heads facing outward. The main forces that hold the membrane together are hydrophobic interactions between the phospholipid tails and the surface of integral membrane proteins buried in the membrane, polar interactions among the phospholipid head groups on the same surface of the membrane, and hydrophobic interactions among the fatty acid tails of phospholipids on opposite sides of the membrane.
Covalent interactions between the phospholipid and protein components of the membrane are not typically important in holding the membrane together. These interactions are much stronger than the other types of interactions and are not typically found in biological membranes. Instead, the membrane components are held together by weaker, non-covalent interactions that allow for the fluidity and flexibility that is necessary for the membrane to function properly.
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Answer:
C. Cholesterol
Explanation:
Cholesterol maintains the fluidity of the cell membrane and thereby, regulates its function.
Bile acids are derived from cholesterol which serves as their precursor. For example, Taurocholic acid is a polar derivative of cholesterol. Bile acids serve in the absorption of fatty acids, glycerol, and fat-soluble vitamins as these compounds are non-polar in nature.
Vitamin D is produced when the derivative of cholesterol, 7-dehydrocholesterol undergoes photolysis in skin cells in presence of sunlight.
Answer:
Aerobic respiration, Anaerobic respiration in yeast, Anaeorbic respiration in muscles.
Explanation:
1) Aerobic respiration: In this case pyruvate is broken down into water and carbon dioxide along with release of energy. It commonly occurs in mitochondria of cells.
2) Anaerobic respiration in yeast: In yeast cells during fermentation pyruvate is converted into ethanol and C02 in the absence of 02.
3) Anaeorbic respiration in muscles: Due to lack of oxygen, eg. during vigorous running or exercise, in human muscles, pyruvate is converted to lactic acid.
Answer:
The correct answer would be C. identical.
Bacteria divides into the two daughter cells through the process called binary fission that is, a type of asexual reproduction.
Thus, it does not involve the formation as well as fusion of gametes.
Before the cell division, the DNA of the bacteria gets doubled through mitotic division so that it can be divided equally into two daughter cells.
Thus, both the daughter cells get identical DNA.
(B) adipose tissue.
(C) fibrous connective tissue.
(D) nervous tissue.
(E) muscle tissue.
Answer:
It's based on the natural radioactive decay of certain elements, such as potassium and carbon.
Explanation:
Answer:
To establish the age of a rock or a fossil, researchers or scientists use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events.
Explanation: