Movement of cell against concentration gradient is called a. osmosis b. active transport c. diffusion d. passive transport

How might a blockage of the lymph vessels affect the function of the cardiovascular system?

Most___animals have developed circulatory systems to transport materials. unicellular multicellular both a and b none of above

What conclusion does this model support? The model shows water molecules interacting. The gray circles represent oxygen, and the white circles represent hydrogen. What conclusion does this model support? A.

Diego conducted an experiment to find out what kind of ball bounces the highest when dropped from a five-foot platform. He used a golf ball, a tennis ball, and a soccer ball. He dropped each ball from the balcony once.

Any disease condition of the heart muscle that includes heart enlargement and heart failure is called:

Which of these statements is true about heating up air in the lower atmosphere? A. It occurs mainly through radiant energy. B. It occurs through convection from Earth. C. It happens to a different extent over land and water. D.

How might a strawberry plant depend on birds? A. The birds provide shade to the strawberry plant. B. The birds eat insects that would destroy the plant. C. The birds eat the strawberries so the plant cannot reproduce anymore. D.

Which phase occurs directly after G1? A. S phase B. M phase C. Cytokinesis D. G2

Which describes the correct pairing of DNA bases? O A. A with T, and C with G O B. A with A, and G with G O C. A with G, and C with T O D. A with C, and T with G

How to have self control over heart rate?