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:
The molecule has 2 double bonds
Explanation:
Corresponds to propanediene (alkene with 3 carbons and 3 double bonds).
When saying the statement that it is a 3-carbon alkene, the only option is that it has two double bonds:
H2C = C = CH2 (carbon has 4 valence, sharing 4 electrons)
