Which statement is true of enzymes? they are proteins
they are nucleic acids
they are lipids
they are carbohydrates

What is the compliment dna strand to the following sequence: ttgactaggcta

What are characteristics of minerals? select 3 choices

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.