Anabolic ________ are used to rapidly increase strength and endurance and build muscle mass, but they may also promote irritability and aggressive behavior.
A. vitamins
B. steroids
C. NSAIDs
D. anesthetics
Answer: B
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Indicate whether the statement is true or false
Which system contains short preganglionic axons that branch extensively?
A. Somatic nervous system B. Sympathetic nervous system C. Parasympathetic nervous system
Rapid diffusion of oxygen and carbon dioxide through the air sacs (alveoli) of the lungs takes place through ________ epithelium.
A. simple squamous B. simple columnar C. keratinized stratified squamous D. simple cuboidal E. nonkeratinized stratified squamous
Which of the following statements about RNA is true?
A) RNA is a single nucleotide strand. B) RNA is composed of the bases cytosine, guanine, adenine, and thymine. C) RNA is found only in the nucleus of the cell. D) RNA contains a sugar called deoxyribose. E) RNA is the genetic material found within the cell nucleus.