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.
Son agrupaciones de estrellas reunidas bajo el mismo nombre. Estas estrellas reunidas bajo la misma región celeste forman aparentemente una figura.
The answer is D. NADH to NAD+
When no oxygen is present, anaerobic respiration occurs.It is the only way to produce ATP in this condition.NAD+ is necessary because it is converted into NADH and at the same time ADP is converted to ATP in the reaction of pyruvate synthesis from glucose.Therefore, NADH must be converted to NAD+ in order to have NAD+ always present in the cell.
Answer:
trees are bigger than most plants but they are still plants. they are producers.
for example trees are producers and provide for termites that are primary consumers. spiders are secondary consumers and so on and the food chain goes on.
Answer:
D. The amount of sulfur emitted by a smokestack before and after the scrubber is attached
