The tip of an embryonic nerve cell's axon is called a
A) kissing cone.
B) growth cone.
C) growth tip.
D) stem tip.
E) None of the answers are correct.
B) growth cone.
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The movement of a limb around an axis is ________.
Fill in the blank(s) with the appropriate word(s).
Answer the following statements true (T) or false (F)
1. The last two sets of ribs that are only attached to the vertebrae are called false ribs. 2. The sternum is also called the breastbone. 3. The scapula and clavicle make up the pectoral girdle. 4. The tibia and fibula are the bones of the lower arm. 5. The femur is the bone of the thigh.
The thick ascending limb functions to
A) actively pumps sodium out of the tubular fluid. B) reabsorb water. C) filter sodium. D) secrete drugs. E) All of the answers are correct.
Which antibiotics contain the beta-lactam ring?
a. penicillins and aminoglycosides b. quinolones and tetracyclines c. macrolides and quinolones d. penicillins and cephalosporins