Answer:
Option c (No, T cells left from the previous infection can kill any virus.
)
Explanation:
When ever viral infection occur, body's immune system start to fight against it by activating B-cells and T-cells.
B-cells produce antibodies that bind with virus and act as label. This label indicate virus as foreign substance. Hence T-cells recognize it and kill it. Furthermore, B-cells form memory cell that keep the viral memory. if this viral infection occur again in future, T-cell recognize it and eliminate the virus.This mechanism is called immunity.
Answer: UAC
Explanation: transfer RNA(tRNA) is the type of RNA that interprets the messenger RNA(mRNA) code during translation. The job of tRNA is to match up the amino acids with the correct codons in the mRNA strand. According to the base pair rule for RNA, Adenine and Uracil (A - U) are base complements while Guanine and Cytosine (G - C) are base complements. So if;
mRNA: AUG
then,
tRNA: UAC.
A protostar forms once the nebular cloud condenses and the core begins to heat. To heat is the answer hope this helps you!!
sensory functions are found on the head of an insect , they have a single pair of antenna , mouthparts adapted for chewing or sucking.
The nucleus is the center of our cells. it contains our chromosomes and genetic information the produces life.
