Answer:
The body changes with aging because changes occur in individual cells and in whole Organs. These changes result in changes in function and in appearance.
Answer:
Option A
Explanation:
DNA sequence: GTCACCGGTCTATACATAAGC.
If the bases of codon 5 under a mutation of C to T, the outcome would be?
Bases of the sense codon 5 is TAC, since codons of the sense strand is the same as that of the mRNA except with the replacement of uracil in place of thymine. This codon TAC codes for tyrosine.
If a mutation occurs changing C to T, then the bases would be TAT coding also for tyrosine too due to the nature of redundancy of the genetic code. Thus, there would be no change to the protein sequence although a change would occur in the DNA sequence.
Redundancy of the genetic code indicate that more than one codon can code for an amino acid as there are 64 codons and 20 amino acids.
Answer:
b. Cellular clock is the correct answer.
Explanation:
Cellular clock theory states that cells can divide a maximum of about 75 to 80 times, and that as we age our cells become less capable of dividing.
Cellular clock theory directs on the lifespan of organisms. As the many individual cells do not remain to reproduce continually, so this theory implies that aging of the cells is a result of their reproductive limitation and because of cellular aging.
Cellular clock theory is the theory Leonard Hayflick's that describes the cellular aging mechanism and it suggests that as the cell becomes aged it becomes less effective of dividing.
Answer:
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