Answer:
A. B cells
Explanation:
B cells are involved in the specific immune response that exhibits specificity, memory and self-non-self distinction. This immune response is also called as adaptive immunity. B cells are produced in the bone marrow. An encounter of B cells with antigen activates them for multiplication.
The activated B cells produce plasma cells which in turn produce specific antibodies that bind to the specific antigens and start the adaptive immune response.
1 Viruses are not alive, bacteria are.
<span>2 Viruses must replicate in a host cell; bacteria can replicate on their own </span>
<span>3 Viruses are much smaller </span>
<span>4 Viruses have a protein layer called caspid </span>
<span>5 Viruses cannot be killed with antibiotics; bacteria can be. (If you have a virus that makes you sick, you can only treat the symptoms, not the actual bug itself)</span>
Answer:TT (tall plant)
Explanation:
When a Tall plant (TT) is crossed with tt (Short plant) all the offspring will be tall because T is dominant over small t. This happen in the first filail generation.
TT×tt
Tt Tt Tt Tt- all tall pea plant.
Complete dominant occurs when a dominant allele expresses itself over a recessive allele such that the phenotype expressed is of the dominant traits.
