Which is true about the elongation of the leading strand during dna synthesis?

a. it depends on the dna polymerase action.

b. it produces rna fragments.

c. it does not require a template strand.

The breakdown of food is accomplished by enzymes. a. physical b. chemical c. mechanical d. none of the above

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.

Animals that have thick fur and ae able to store large amounts of body fat live where ?