What primitive form did nucleic acids take?

- polypeptides

- deoxyribonucleic acid

- ribonucleic acid

A taxis is a directed movement due to a stimulus. What do you think "positive phototaxis" means

You eat a bowl of beans as part of vour dinner. As vou digest the beans, the proteins that are present get broken down to their component amino acids.

Before you dive into DNA analysis, do a bit of online research to learn more. Check out sites that focus on explaining more about how real forensic DNA labs work.

Advances in medical technology have had no impact on the environment.

Multiple questions: 16. In what part of the leaf are the chloroplasts found? 17. What does the cuticle protect the plant from? 18. What type of tissue surrounds the chloroplasts and the xylem and phloem?

When scientists are developing explanations for how natural phenomena work, like the process of evolution, they are involved in a variety of tasks. Which is NOT a task that a group of scientists would undertake when developing explanations? A.

Clarify why the surface of the plasma membrane can be described as a mosaic

Who made the subject biology?

Who proposed that all of the present continents were once joined together in a single supercontinent called Pangaea? Select one: a. Alfred Wegener b. Charles Darwin c. Arthur Holmes d. Harry Hess

Which of the following is a source of genetic variation within a species? A) Cloning B) Mutation C) Selection Breeding D) Natural Selection