What does the appearance of a blue or pink color in a thioglycollate tube mean?

The model illustrates a process by which a substance is taken up by a cell

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.

Which of the following best describes the relationship between glucose and complex molecules such as hormones?