Which antibiotics contain the beta-lactam ring?
a. penicillins and aminoglycosides
b. quinolones and tetracyclines
c. macrolides and quinolones
d. penicillins and cephalosporins
.D
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Answer the following statement(s) true (T) or false (F)
1. Endocrine glands release their hormones into the blood via a duct system. 2. Hormones are not very specific about the cells they affect. 3. With increasing age, the thymus increases in size. 4. Testosterone is a gonadotropin.
Neurotransmitter is released from the synaptic knob by exocytosis, and it then diffuses across the synaptic cleft.
Answer the following statement true (T) or false (F)
At the end of inspiration and at the end of expiration, intrapleural pressure is always equal to atmospheric pressure
Indicate whether the statement is true or false
Given these respiratory passageways:
1) alveoli 2) bronchi 3) bronchioles 4) respiratory bronchioles 5) terminal bronchioles From largest to smallest, the correct order for these passageways is: A. 1,2,3,4,5 B. 2,3,5,4,1 C. 3,1,2,5,4 D. 4,5,2,1,3 E. 5,2,3,4,1