Enzymes have an optimum temperature for their catalytic activity. This is best explained by the balance between the number of collisions and the rate of denaturation of the enzyme as temperatures increase.

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.

Hector is back from his morning run and is feeling light-headed because his energy is depleted which food item will provide him with a quick source of carbohydrates

Are the layers of rock above and below the coal older or younger?