The concentration of na within a cell is required to be __ than the external concentration.

Why would archaea that grow in extreme environments be more intensively studied than those that do not?

What is the main goal for gene therapy? A. To cure human diseases. B. To produce inexpensive medicine. C. To lower the costs of livestock production. D. To increase the nutritional value in foods.

Defecation depends on a. distention of the rectal wall b. sensory impulses to the sacral spinal cord c. motor impulses back to the colon d. all of the above must happen for defecation to occur

Describe how the two mechanisms of gene control are fundamentally different

What is a macromolecule

You are a geneticist trying to develop a sunflower with red flowers and a short stem. as you compare the sunflowers you have, what genetic variations would you look for? what kinds of plants would you select for crossing?

How are Amino acids linked to become proteins?

1. Explain what is the "Sea Floor Spread" with examples. 2. Explain "Continental Slide" with your own example. 3. How do you explain Transform Boundary after going through the "Slippin' and a Slidin' ".

Differences between prokaryotic and eukaryotic promoters?

Why does directionality in carbohydrates matter?