Base on the amount of water used, would you choose paper or plastic?

What best describes the muscular system

Alyssa is observing two cells, X and Y. Each cell is from either a plant or an animal. She records some of her observations in a chart.

Brass gets discoloured in air because of the presence of which of the following gases in air? A. Oxygen B. Hydrogen sulphide C. Carbon dioxide D. Nitrogen

Within a eukaryotic cell aerobic cellular respiration occurs within the

Select all items that describe the Amish culture. a. speak Creole or Spanish b. wear simple clothing c. embrace technology d. live in farming communities e. use horse-drawn vehicles f. value education g. are frequent moviegoers

Canine and feline species maintain their reproductive isolation mechanisms due to the fact that the formation of a fertilized zygote is impossible. What type of isolation describes this? a. Gametic b. Mechanical c. Temporal d. Ecological

In humans, chemical digestion is accomplished by enzyme action that begins in the mouth and ends in the a. esophagus b. stomach c. small intestine d. gallbladder

Which of the following best describes computer modeling in biology?

If an atom has six valence electrons how many does it need to obtain a full outer shell

The two amino acids animated above are joined together by a?