What is the role of cyclin-dependent kinases in the cell cycle?
question 5 options:

they stop the cycle if something has gone wrong.

they catalyze the condensation of the chromosomes.

they provide the energy for the actions of the spindle fibers.

they initiate various stages of the cell cycle.

Which statement about dna replication is true? a. eukaryotes only have one circular chromosome that unwinds at multiple locations. b. eukaryotes can only replicate one segment of a chromosome at a time. c. prokaryotes can only replicate their single circular chromosome in the nucleus. d. prokaryotes only have one origin of replication to initiate replication.

Guard cells control which event? the growth of plants capture of solar energy gas exchange in leaves water absorption in roots

14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca