Which type of transport takes place when a protein allows an ion to enter a cell without using energy?

A client complains to the health care provider that he keeps getting hard skin on the sides of the great and little toes when he wears certain pairs of shoes.

Which of these is an abiotic factor of an aquarium ecosystem? A. algae growing on the glass B. gravel on the bottom of the aquarium C. plants growing from the gravel D. fish swimming in the water

What is the function of the Sertoli cells in the male reproductive tract?

Which activity involves only a physical change? a. acid bubbling on a rock b. grinding coffee beans c. exploding fireworks d. baking cookies

Which statement is NOT true about catabolic pathways? Which statement is NOT true about catabolic pathways? a. They have a net consumption of ATP. b. They liberate smaller molecules from larger ones. c. They have a net release of energy. d.

What molecule or gas is not necessary for plants and is then released?

What is energy? • chemical change • force x distance • force •the ability to do work

What did Seattle say about integrating white and Native American cultures? A. It will be impossible, because the two traditions are too different. B. X C. It will happen naturally when the railroads open the West to the whites. D.

Your skin is pale, cold, and clammy. your pulse is rapid. your breathing is shallow. you feel fear. these are symptoms of

The processes of diffusion and transport are both used to? 1) break down molecules to release energy 2) move molecules into or out of cells of the body 3) bring molecules into cells when they are more concentrated outside of the cell 4) move