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)

What part of the brain is highlighted in the diagram below?

Which of these substances does not protect against invaders in the nonspecific immune response? a. saliva b. mucus c. tears d. urine

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods.c. it shows that these organisms share the same habitat.d. it provides evidence that these organisms suffered a genetic mutation.