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Q. How does the sexual arousal mechanism in women facilitate fecundation?
During sexual arousal in women the vagina secretes substances to neutralize its acidity thus allowing the survival of sperm cells within it during the female fertile period hormones make the mucus that covers the internal surface of the uterus less viscous to help the passage of sperm cells to the uterine tubes during copulation the uterine cervix advances inside the vagina to facilitate the entering of male gametes during the cervical canal.
How Proteins can be Classified? I. Shape and size: fibrous proteins and globular proteins. Fibrous proteins play structural roles in organisms. Globular proteins consist of lo
Poriferans and cnidarians do not have excretory systems. Do platyhelminthes have an excretory system? Platyhelminthes have a primitive excretory system made of flame cells (als
Determine the major demographic processes? There are five major demographic processes, which are continually at work within the population namely, fertility, mortality, marriag
The process of fatty acid elongation is similar to fatty acid synthesis as it also requires both: -malonyl CoA and NADPH -malonyl CoA and NADH -Acetyl CoA and NADH
Explain Receptor Proteins These are built into the membrane of a nerve cell and they detect chemical signals released by other nerve cells. Receptor proteins are involved in
Steps of C dna amplification 1. Smart-pcr amplification of cdna is the technique which initiates with the change of mrna to cdna utilizing mmlv-rt, mutated in the rnase h dom
Structure of Blastula The structure of blastula turns into modified in several animal groups. The changes are related to the amount of yolk deposited in the egg, as you will s
Directly observed therapy In treating TB, poor adherence to therapy is the most important cause of treatment failure and is associated with emergence of drug resistance. Medica
A person is declared to be dead upon the irreversible cessation of spontaneous body functions; brain activity, or blood circulation and respiration. However, only about 1% of a per
levels of biodiversity
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