Answer:
secrete a cytokine that triggers apoptosis
Explanation:
Cytotoxic T cells secrete granzymes and perforins when targeting cells. Additionally they secrete cytokines such as IFN-, TNF-α and TNF-β that act to activate macrophages and help kill infected cells.
Answer:
A purine always forms a complementary base pair with a pyrimidine.
Explanation:
Purine bases such as Adenine pair specifically with Thymine , a pyrimidine base forming two bonds; just as Guanine pair specifically with Cytosine forming three bonds.
This specific base pairing are complimentary in nature and grants stability to the DNA.
A maybe sounds abt right sorry if it's wrong.
I just finished a topic in science on this.. lemme try my best:
4: PCR (Polymerase Chain Reaction)
5: Genetic Engineering
6: Restriction Enzymes (I think)
Let me know if I’m wrong!
The answer is Artificial selection