<span> You need to use this formula to solve this exercise: P(t)=Ae^(k.t)
P(t) is the p</span><span>opulation of bacteria
A is the number of bacteria at the beginning of the experiment: 71
K is the growth rate
20 min= 1/3 hours
P(0)=71
P(1/3)= 71 ⇔ P= 71 x 2 ⇔142
142= 71 x e^k/3
2= </span><span>e^k/3
ln 2 = k/3
3ln 2=k
ln(2³)=k
</span>k=ln8
Answer:
B. All antigen receptors produced by a single B or T cell are identical and bind to the same epitope.
Explanation:
Antigen receptors are antibody protein anchored to the B-cell membrane.
They are all identical when the antigen receptors is located on one type of B cell making Binding between the receptor and epitope to occur since its structures are complementary. It's not identical when the antigen receptors is located on different types of B cell
Answer:
Option C, Is an autosomal dominant condition resulting in pleiotropy
Explanation:
Marfan syndrome is a genetic disease that is autosomal dominant and effects the connective tissue in various parts of the body. The common symptoms of this disorder are – abnormalities in all connective tissues thereby causing abnormalities in blood vessels, eyes, joints, heart etc.
Sun individuals have elongated fingers and toes and they are tall and slender. Thus, due to abnormalities in various body parts, it is suspected to effect the unrelated phenotypic traits and hence it shown pleiotropism.
Thus, option C is correct
During photosynthesis, when hydrogen ions are split from the water molecules, this is called photolysis. The hydrogen atoms are then transferred to NADP+ molecule, making it NADPH. These stored hydrogen along with electrons will be used for the next cycle while the oxygen that is split from the water molecules is released to the atmosphere.