What makes up a motor unit?

a. one tendon and one muscle fiber

b. fast - and slow-twitch muscle fibers

c. one motor nerve connected to muscle fibers

d. one motor nerve connected to a tendon?

Natural selection is

A scientist asked a question that was based on an observation. Which is the next step the scientist should take? The scientist should form a hypothesis and design an experiment. The scientist should collect data and organize it into tables.

Why is the fourth side of an occlusive dressing left open on a sucking chest wound, particularly if tension pneumothorax develops?

Beowulf was written in AD 838. O True O False

Which of the following is an autotroph A-dodder B-sunflower C-fungi D-algae

Which change shows a tenfold increase in concentration of H + ions?

Which valve prevents backflow into the right atrium?

The biomolecule described is a

Chemical reactions in cells are faster than the same reactions outside cells. True False

What are WBCs and what do they create to fight off infections?