Which structure in the male pig transports both wastes and reproductive cells to the outside of the body?

Which membrane gives eukaryotes an advantage over prokaryotes in protecting their genetic material from damaging chemical changes?

Which lists the correct order of evolutionary history? a. crabs, jellyfish, reptiles b. mammals, amphibians, crabs c. vertebrate fish, crabs, mammals d. jellyfish, reptiles, mammals

List the hierarchy of cell organization from largest to smallest

Within a DNA molecule, which nitrogen base pairs with cytosine (C) ? A. uracil (U) B. thymine (T) C. adenine (A) D. guanine (G)

What do you call water that is safe for humans to consume?

Which of the following best describes a noncontact force? A. a force that is able to act at a distance B. a force that must be physically touching the object it acts on C. a force that always pulls objects backward D.

Which type of energy used on earth comes directly from the sun

Aldosterone is secreted in response to changes in: select one: a. blood potassium levels. b. blood calcium levels. c. blood pressure. d. body temperature. e. blood glucose levels

How does a mutation in dna cause a disease that affects multiple organs?

Dylan is on a strict vegan diet. He doesn't consume meat, fish, eggs, or dairy products. Which nutrient is difficult to obtain naturally from a vegan diet