Onchocerciasis, or river blindness, is caused by a ________ and is spread via ________
A) helminth; blackflies
B) protozoan; contaminated water
C) virus; fomites such as towels or bedding
D) fungus; contaminated contact lens solution
E) bacterium; gnats which swarm near the eye
Answer: A) helminth; blackflies
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Which of the following statements about childbirth is false?
A. Babies are usually born head first with the face pointing upward. B. The placenta is expelled as a result of muscular contractions of the uterus. C. The baby goes through a series of movements to facilitate its passage through the pelvis. D. Caesarian sections involve the removal of the baby through an incision in the abdomen and uterus. E. None of the answer options is false.
Which of the following is true about the two populations shown here?
1.Population A had a larger starting size of breeding individuals than population B.
2.Population B had a larger starting size of breeding individuals than population A.
3.Both populations had the same starting size.
4.Population A had a larger starting size but natural selection was in place, while population B was not subject to natural selection.
Biochemical evidence supporting the sliding filament model of muscle contraction includes the observation that
A) myosin light chains can be phosphorylated. B) titin connects each end of a thick filament to a Z line. C) TnC binds Ca2+. D) actin has polymerization ATPase activity. E) myosin has an ATP-dependent crossbridge cycle.
Present evidence supporting the argument that Y chromosome STR profiling is not sufficient for proper DNA profiling
What will be an ideal response?