<span>Biological pest control is more successful in smaller environments or area because it is easier to monitor and control the experiment in these areas. Also, they can be confined only to this particular area. Hope this answers the question. Have a nice day.</span>
Answer:
In humans, biotin is involved in important metabolic pathways such as gluconeogenesis, fatty acid synthesis, and amino acid catabolism. Biotin regulates the catabolic enzyme propionyl-CoA carboxylase at the posttranscriptional level whereas the holo-carboxylase synthetase is regulated at the transcriptional level.
Biotin functions as a cofactor that aids in the transfer of CO2 groups to various target macromolecules. Biotin has nine host enzymes with which it is associated. Humans only have four of these enzymes:
Pyruvate carboxylase (formation of oxaloacetate from pyruvate)
beta-Methylcrotonyl-CoA carboxylase
Propionyl-CoA carboxylase (conversion of propionyl-CoA to succinyl-CoA)
Acetyl-CoA carboxylase (carboxylation of acetyl-CoA to malonyl-CoA)
Biotin's other target enzymes include Steptividin, Avidin, homocitrate synthetase, and isopropylmalate synthase.
In order to provide glucose for vital functions such as the metabolism of RBC's and the CNS during periods of fasting (greater than about 8 hrs after food absorption in humans), the body needs a way to synthesis glucose from precursors such as pyruvate and amino acids. This process is referred to as gluconeogenesis.
<u>Answer</u>: C) Hydrophobic interior, hydrophilic exterior
<u>Explanation</u>:
- The <em>plasma membrane</em> of the cell defines its boundary and separates its internal components from the external environment.
- The basic components of the plasma membrane include phospholipids, carbohydrates, proteins, and cholesterol.
- The plasma membrane is a phospholipid bilayer, with <em>hydrophobic</em> tails of the phospholipid projecting <em>inwards</em> and the <em>hydrophilic</em> exterior in contact with the external environment.
- <em>Due to this, the plasma membrane has a hydrophobic interior and hydrophilic exterior. </em>