What is physical fitness?

a) ability to perform tasks without excessive fatigue

b) general state of health well being

c) ability to play sports or perform at a job

d) all of the above

This is one popular brand of exercise machine

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.

Which person should increase calorie intake due to a lifestyle choice? a. an adult who is often sedentary b.an athlete c.a student getting ready for school exams d.an older woman