Which process requires cellular energy to move

molecules across the cell membrane from a regionof lower concentration to a region of higher concentration?

A. active transport

B. diffusion

C. osmosis

D. hydrolysis

Match the rocks with the material they are made of. igneous rocks / sedimentary rocks / metamorphic rocks They are made from weathered pieces of rock. They are rocks, small or large, which reformed due to high temperature and pressure.

Which of the following is an example of epithelial tissue? A) the brachialis muscle B) insulating fat C) the outer lining of the parotid gland D) hyaline cartilage covering bone

What separates the unsaturated zone and the saturated zone in an aquifer?

If temp. Is raised to 50 Celsius from 37C. What happens to catalase? Does increasing temperature alter the structure of catalase, thereby decreasing oxygen production?

7. Why is approximately 50% of any individual's DNA inherited from that individual's father? It was passed to the individual by a somatic cell from the father. It was passed to the individual by a gamete from the father.

Describe how scientists use mathematics in their work.

You are preparing a medium for growing fastidious bacteria and must add several heat-labile solutions of growth factors. Which of the following is an appropriate strategy for preparing and sterilizing this medium? a. Pasteurize the medium. b.

What does Earth's rotation on its axis cause? A the tides B night and day C passing of years D phases of the moon

What are two things that a leaf does for a plant

The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups-Lophotrochozoa and Ecdysozoa. What does this finding suggest?