8. which of the following is a true descriptive statement of active transport through a cellular membrane? a. always needs atp d. co-transport is possible b. molecules moved up their gradients e. includes types of vesicular transport c. all of the above (a, b, d, e) f. none of the above (a, b, d, e)

Explain how organisms could be harmed by high levels of salt from roadways?

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one

Dan made the table shown to describe two different relationships between animals. organism interactions relationship a relationship b one organism lives inside the organism it feeds off no organism is harmed which of the following statements is most likely correct?