Half life is the time taken by a radioactive isotope to decay by half of its original mass. In this case the half life of carbon-14 is 5500 years.
The original mass is 30 g and the new mass is 3.75 g.
New mass = Original mass × (1/2)^n, where n is the number of half lives;
3.75 = 30 × (1/2)^n
1/8 = (1/2)^n
n = 3
Thus, the time taken will be; 3 × 5500 = 16500 years.
<span>The Growth hormone (GH) is of greatest importance in human development. It is a peptide hormone that stimulates growth, cell reproduction, and cell regeneration in humans. GH is produced by the pituitary gland, and it also helps to regulate body composition, body fluids, and muscle and bone growth.</span>
Answer:
The muscular dystrophy may be defined as the medical condition that leads to the weakening of the muscle and reduction in the muscle weight and loss of motor control.
The muscular dystrophy is the autosomal recessive disease. THis occur due to the mutation in the amino acids and arginine is replaced with histidine. The arginine pKa value is high whereas histidine pKa value is nearly upto 6-7. This disrupt the physiology of the proteins, disrupt its structure and result in the formation of misleading protein.
Because we know that 15% of the population does not have the allele we can assume that at least 85% of the population has at least on copy of the dominant allele.
