What is not a function of the integumentary system?
A. Protection from injury
B. Protection from pathogens
C. Excretion of some wastes
D. Protection against dehydration
E. Exchange of gases
Answer: E
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Which phylum has a unique water vascular system that usually includes tube feet that can be used for movement?
a. Echinodermata b. Hemichordata c. Chordata d. Cnidaria
-cell grows and becomes committed to divide. -Chromosomes are replicated. -cell makes protein for chromosome sorting and cell division. -cell divides into two daughter cells.
What will be an ideal response?
A virus differs from a bacterium in that a virus ________
A) develops resistance to antibiotics B) causes pneumonia C) does not have DNA or RNA D) is not a living organism
Women often receive synthetic oxytocin to induce childbirth or augment contractions. What is an important consideration about the use of synthetic oxytocin?
A. The synthetic form does not travel down motor neurons, so it is less effective than the natural form. B. If you fail to simultaneously provide synthetic G protein, the hormone is ineffective. C. It can be difficult to get the levels just right, so uterine contractions can be too strong. D. It is impossible to mimic its chemical structure, so it may act on other receptors and cause side effects.