The right answer is nucleotide biosynthesis.
Favism or deficiency of glucose-6-phosphate dehydrogenase, or deficiency of G6PD, is the most widespread enzymatic deficiency in the world. Of genetic origin, it is characterized by a destruction of the red blood cells (hemolysis) during the ingestion of beans or the taking of certain drugs (especially synthesized antimalarials).
The enzyme Glucose-6-phosphate dehydrogenase is involved in the pentose phosphate pathway that produces riboses that are part of the nucleotide composition.
Background evidence that proves that this hypothesis is plausible
In the α helices of transmembrane proteins, the hydrophobic side chains face the outside of the membrane-spanning helix.
Transmembrane proteins are a type of integral membrane protein that spreads throughout the cell membrane. Many transmembrane proteins act as gates that allow the transport of certain substances across the membrane.
Transmembrane proteins basically act as gates or docking sites that allow or prevent substances from crossing the cell membrane.
Transmembrane proteins penetrate the entire plasma membrane. Transmembrane proteins are found in all types of biological membranes. Monotopic proteins are permanently attached to the membrane from only one side
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<span>The lac operon constitutes all of these but promoter. The correct option among all the options that are given in the question is the second option or option "B". The pther choices in the question are incorrect and can be neglected. I hope that this is the answer that has come to your help.</span>
In the block to polyspermy, entry of the sperm's contents causes calcium ion levels in the oocyte's cytoplasm to rise, triggering the cortical reaction.
In biology, polyspermy describes the fertilization of an egg by more than one sperm. Diploid organisms normally contain two copies of each chromosome, one from each parent.
The cell resulting from polyspermy, on the other hand, contains three or more copies of each chromosome—one from the egg and one each from multiple sperm. Usually, the result is an unviable zygote. This may occur because sperm are too efficient at reaching and fertilizing eggs due to the selective pressures of sperm competition.
The cortical reaction is a calcium-dependent exocytotic process in which the content of secretory granules is released into the perivitellin space immediately after fertilization, which serves to prevent polyspermic fertilization.
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