Answer:
B) Viruses are killing some of his B cells and becoming incorporated into the genomes of others.
Explanation:
Epstein-Barr virus causes infectious mononucleosis by following mechanism.
1) Epstein-Barr virus attaches to and infects epithelium of the throat where it replicates and causes pharyngitis.
2) Virions enter the lymphoid vessels and are carried to the lymph nodes. Some virions escape the lymphnode trap and are carried to the bloodstream.
3) Virions attach specifically to B lymphocytes and infect them, producing either latent infection or productive infection.
4)The infected B lymphocytes actively replicate and differentiate into cells producing random immunoglobulins.
5)T cells respond to infection and destroy the lymphocytes replicating EBV vitus.
6) Latently infected B lymphocytes become immortal. They are not attacked by T cells.
Answer:
150 individuals
Explanation:
If the dark phenotype is determined by a dominant allele at a single locus, the ratio of dark green phenotype to pale green phenotype at F2 should be 3:1 according to the Mendelian standard.
200 to 3:1 = 150:50
<u>Hence, if 200 F2 individuals were characterized, one would expect the number of dark green individuals to be 150 while the pale green would be expected to be 50.</u>
Answer:
1) following surgery or hospitalization your body will need a high protein diet for iron and amnio acids amino acids in the protein help repair muscle damage by regenerating tissue and speeding up wound healing.
2) fish , because fish is full of omega-3 fatty acids and vitamins such as D and B2. Fish is also rich in calcium and phosphorus and a great source of minerals, such as iron, zinc, iodine, magnesium, and potassium.
3) highly processed foods because they are unhealthy and high in fats and sugar
Answer:
B
Explanation:
The cell membrane is like a gate around the cell, it only lets certain substances come in and out of the cell.
