Which water-soluble vitamin plays an important role in the formation of collagen?

A. vitamin C

B. thiamin

C. folate

D. biotin

What are the macromolecules DNA and RNA referred to as? Proteins Carbohydrates Nucleic acids

Scientists Stanley Miller and Harold Urey sealed water, methane, ammonia, and hydrogen in a flask, to simulate Earth's early environment. They exposed the chemicals to electric charges to simulate lighting. What did the process produce? A.

Acid rain and other forms of pollution can cause soil acidification, which decreases the number of decomposers in the soil. What is most likely to happen to an ecosystem that experiences soil acidification? A.

Which of the following is a stress-related disorder/disease? (Choose all that apply.) -Migraine headaches -tense muscles -heart disease -tmj dysfunction -asthma -anxiety disorder -backache -chronic fatigue -high blood pressure -cold and flu

Which two structures of a frog would most likely have the same chromosome number

Which of the following is one effect storm waves have on a beach?

What is the process known as in which there is a change in one form such as a tadpole into a frog?

Why is regualtion of the cell cycle important?

An object of the same mass has three different weights at diffrent times. Which statement is possible

Skeletal muscle is covered, surrounded and protected by various layers of connective tissue. Which layer of connective tissue would surround a bundle of muscle fibers (muscle cells) ?