Which cell has no nucleus when it is mature?
A) platelet
B) neutrophil
C) erythrocyte
D) lymphocyte
Answer: C) erythrocyte
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The laws of constant acceleration can be applied to which of the following?
A. horizontal component of projectile motion B. vertical component of projectile motion C. resultant of projectile motion D. both A and B E. all of the above
Reptiles should be quarantined for:
a. 1-2 weeks c. 2-3 weeks b. 1-2 months d. 2-3 months
Near the end of the first trimester, deoxygenated blood flows from the developing embryo or fetus to the placenta through
A) paired umbilical veins. B) the superior vena cava. C) one umbilical vein. D) three umbilical arteries. E) paired umbilical arteries.
Which of the following can be broken down chemically by amylase?
A) lactose B) glucose C) amylopectin D) sucrose