Which of the following is true? a. genes are regions of DNA that code for proteins
b. chromosomes contain regions of genes called DNA
c. DNA contains regions of genes called chromosomes
d. genes contain regions of chromosomes called DNA

An organ system consists of a group of organs that performs specific functions necessary for the survival of an organism. humans have eleven different organ systems: integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, urinary, and reproductive. discuss the function of neurons, the brain and the spinal cord within the human nervous system while explaining the interrelationship of each organ.

As the human population grows, what happens to our natural-resource requirements? o they increase o they decrease o they do not change. they go in cycles

Describe the relationship between isotonic solutions, equilibrium, and water movement into and out of a cell.