Circle each of the following as prokaryotic or eukaryotic AND as autotrophic or heterotrophic AND as unicellular or multicellular. Bacteria pro / eu auto / hetero uni / multi
Protists pro / eu auto / hetero uni / multi
Plants pro / eu auto / hetero uni / multi
Animal pro / eu auto / hetero uni / multi

The circles, or orbits, for electrons are called energy levels. each level can hold only a certain number of electrons. add electrons to each level until you can't add any more. how many electrons can each level hold?

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down