Organs form and begin to function during the ____ period.
A. embryonic
B. amniotic
C. fetal
D. chorionic
E. gastrulation
Answer: C
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Which of the following cell types initiates a secondary immune response?
A) natural killer cells B) memory cells C) effector cells D) plasma cells
What is the purpose of vitamins in the human body?
A) Vitamins are sources of stored energy. B) Vitamins help enzymes function properly. C) Vitamins act as hormones that trigger cells to take up glucose. D) Vitamins are the basis of the plasma membrane.
Zoster immune globulin (ZIG) and varicella-zoster immune globulin (VZIG) are attenuated vaccines for childhood vaccination.
Answer the following statement true (T) or false (F)