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.
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
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)