What is the correct definition of aerobic exercise? A. intense physical activity that requires little oxygen but involves short bursts of energy

B. the ability to handle the physical work and play of everyday life without becoming tired

C. nonstop activity that requires large amounts of oxygen and works the heart

D. the ability to move joints fully and easily

What angle should your knees not bend past when squatting? a. 30 degrees b. 45 degrees c. 90 degrees d. 120 degrees

Will treating a viral infection with antibiotics affect the course of the infection? a) no; antibiotics work by inhibiting enzymes specific to bacteria. antibiotics have no effect on eukaryotic or virally encoded enzymes.b) no; antibiotics do not kill viruses because viruses do not have dna or rna.c) yes; antibiotics activate the immune system, and this decreases the severity of the infection. d) yes; antibiotics can prevent viral entry into the cell by binding to host-receptor proteins.

If your goal is to improve your person relationships with your friends at school, which category would it fall into? a. physical b. emotional c. social d. academic