In diffusion, movement of particles across a membrane is driven by differences in

A. force.

B. concentration.

C. size.

D. shape.

Feedback mechanisms how do organisms regulate complex systems through chemical interactions

With declining death rates and the availability of disease-fighting medications and world organizations willing to distribute them, what is the likely trend for population growth in peripheral countries by 2050?

What movement of Earth is responsible for night and day? perigee precession revolution rotation

Is a worm a unicellular organism?

Would you expect a honeycreeper species that lives only on the island of Hawaii to have evolved before or after a honeycreeper species that lives on the islands of Hawaii, Maui, and Oahu? Explain your answer.

Name some proteins that are made at ribosomes.

Which describes organs in the human body? the largest living unit a group of cells that work together to perform a common function a group of tissues that work together to perform a common function the smallest living unit

Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: 1. an allopatric barrier to reproduction. 2. a postzygotic barrier to reproduction. 3.

A group of cells working together is known as what

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.