Question

one group of chemical messengers in our body is called hormones, which hormone is specifically mentioned as being involved in the cell cycle?
i. insulin
j. glucagon
k. kinase
l. growth hormone
which check point is involved in checking the dna for errors?
d. g1 checkpoint
e. g2 checkpoint
f. m checkpoint
g. t checkpoint

Explanation:

• Growth Hormone: Growth hormone is involved in cell growth and division, which are key aspects of the cell cycle. Insulin and glucagon are mainly related to blood - sugar regulation. Kinase is an enzyme (not a hormone in the traditional sense as per the question's context of "hormones" being chemical messengers in the body).
• G2 checkpoint: The G2 checkpoint occurs after DNA replication (in the S phase) and before mitosis (M phase). Its main function is to check for DNA damage and ensure that DNA replication is complete. The G1 checkpoint checks for cell size, nutrients, growth factors, and DNA damage before the cell enters the S phase. The M checkpoint (spindle - assembly checkpoint) checks for proper attachment of chromosomes to the spindle fibers. There is no T checkpoint in the standard cell - cycle checkpoints.

Answer:

L. Growth Hormone
E. G2 checkpoint