Because water is a polar molecule, it makes an excellent solvent for atoms and compounds found within cells and tissue. water, acting as a solvent in an organism, aids in all of the following except
a. eliminating waste
b. maintaining turgid pressure
c. constructing cell membranes
d. supplying oxygen and nutrients to cells

Matched chromosomes carrying information about the same characteristics in the organism are called

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.

Which part of the spine is likely to cause a nerve signal to travel faster? a. backbones b. white matter c. nuclei d. gray matter