Facilitated diffusion implies that energy in which form is NOT required?
A) ATP
B) oxygen
C) Na+
D) glucose
E) light
A) ATP
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It has been known for some time that fetal cells can be found in a pregnant woman’s bloodstream, sometimes years
after a pregnancy. A new technique has been developed that allows scientists to isolate these fetal cells from a pregnant woman’s blood. Why would this be a useful new tool for parents interested in genetic testing of their fetus?
What will be an ideal response?Which eating disorder is most likely due to a person being depressed?
Select one: a. binge-eating disorder b. bulimia nervosa c. pica d. anorexia nervosa e. None of the answer choices is associated with depression.
Some microbes gain access to the normally axenic central nervous system by
A) damaging the blood-brain barrier. B) axonal transport from infected peripheral neurons. C) infecting macrophages which subsequently enter the CNS. D) infecting lymph nodes in the cranium. E) either damaging the blood-brain barrier or by axonal transport from infected peripheral neurons.
Which of the following correctly lists the six most abundant elements found in living organisms?
A. carbon, hydrogen, oxygen, nitrogen, phosphorus, sulfur B. water, carbon, oxygen, nitrogen, phosphorus, sulfur C. water, carbon, hydrogen, oxygen, nitrogen, salt D. carbon, hydrogen, oxygen, carbon dioxide, nitrogen, salt