The lac operon is a form of gene regulation. The lac operon in e. coli has genes that transport lactose to the cytoplasm, then breaks it down with the help of enzymatic reactions to turn it into glucose. Once there's glucose, energy can be made.
Answers:
The options
A. 1/4
B. 1/8
C. 1/16
D. 1/32
E. The answer cannot be determined
The CORRECT ANSWER IS B
B. 1/8
Explanation:
The probability of a singular paternal chromosome been found in a specific gamete = 1/2
Therefore, the probability that all the three would have a paternal source = (1/2)^n
Where,
n = 3
(1/2)^3
= 1/8
Hello, I figured that the question was missing its options so I went online to find them. Here they are:
All of the following are true of the thymus gland, except that:
A) activates B cells.
B) reaches its greatest relative size during the second year of life.
C) involutes after puberty.
D) produces T cells.
E) lies in the anterior mediastinum
Answer:
The correct answer is: A) activates B cells.
Explanation:
The thymus is a lymphatic organ that is located in the anterior superior mediastinum (a compartment in the thoracic cavity), in front of the heart, with the function to mature T cells (one of the types of lymphocytes, white blood cells very important for the functioning of the immune system).
The thymus is more active and bigger during childhood, when puberty hits it involutes and its functional tissue is replaced with adipose tissue (fat).
<u>B cells are not activated in the thymus, they mature in the bone marrow</u>.
True
You welcome, have a good day :)
