Which of the following best explains why multiple exercises are needed to improve muscular strength and endurance throughout the body?
a.
push-ups don't exercise leg muscle groups.
b.
different exercises are needed to improve different muscle groups.
c.
weight lifting is more important for muscle strength than endurance.
d.
not all muscle groups can be exercised simultaneously.

Example of health promoting behavior

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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.