Answer: 1. The digestive power of pepsin is greatest at the acidity of normal gastric juice (pH 1.5–2.5). 1.0–2.0
The optimum pH for pepsin activity of 1.0–2.0 is maintained in the stomach by HCl. When the pH of the medium increases to values greater than 3.0, pepsin is almost completely inactivated. 2. The optimum pH for the enzymatic activity of salivary amylase ranges from 6 to 7. Above and below this range, the reaction rate reduces as enzymes get denatured. The enzyme salivary amylase is most active at pH 6.8. around 7
Salivary α‐amylase has a short‐lived action. In fact, it is swallowed with chewed food and subsequently inactivated by extremely low gastric pH; amylase in fact has an optimal pH around 7, and the pH of saliva is generally between 6.4 and 7.0.
Explanation:
Answer:
True
Explanation:
Glucagon is a hormone that is involved in controlling blood sugar (glucose) levels. It is produced by the alpha cells, found in the islets of Langerhans, in the pancreas, from where it is released into the bloodstream.
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I like 4 the best. If an organism is covered by sediment before the body decays the sediment can harden around the decaying body and the imprint will be preserved in the hardened sediment.
Answer: False
Explanation:
It depends on the genetic disorder. Genetic disorders have different modes of inheritance.
If the genetic disorder is autosomal recessive and the mother passes down the faulty gene while the father passes down the normal gene, the child will carry the faulty gene but it will not be expressed.
If the genetic disorder is autosomal dominant and the mother passes down the faulty gene while the father passes down a normal copy of the gene, the gene will be expressed since it is dominant.
If the mode of inheritance is sex-linked, if a mother passes down a faulty gene to her son he will express the faulty gene. The sex chromosomes of males are XY while females are XX
The Y chromosome does not express genetic material because of its size. Since the son will only have one X chromose, he will most likely express any gene passed down. Whereas the daughter will only carry the gene since she has another X to mask the faulty gene.