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:
NADP(Nicotin amide adenine dinucleotide phosphate) is reduced to NADPH
Dominant phenotype will be expressed on homozygous dominant(BB) and heterozygous(Bb) type. Using hardy-Weinberg equilibrium, the percentage of individual with brown eye would be:
homozygous dominant= BB= 70%*70%= 49%
heterozygous = 2Bb= 2* 70%*30%= 42%
Total brown eyes= homozygous dominant+ heterozygous
Total brown eyes= 49%+42%= 91%
Answer:
A gene mutation can be described as errors in the nucleotide sequence of a gene due to errors in the DNA replication process or due to any mutagen. On the other hand, a chromosomal mutation can be described as a change in the structure of a DNA or changes in the number of chromosomes.
A gene mutation occurs in a single gene whereas a chromosomal mutation will affect many genes. Hence, gene mutations will be comparatively less lethal than chromosomal mutations.
Example of gene mutation: Sickle cell anemia
Example of chromosomal mutation: Down's Syndrome
Answer:
Stone Mountain was formed during the formation of the Blue Ridge Mountains around 300-350 million years ago and is considered part of the Appalachian Mountains.
Explanation:
