Ribosomes consist of ________ separate subunits that come together as part of the initiation process and dissociate immediately after termination.
A. four
B. five
C. two
D. three
Answer: C
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Why is a false positive more significant in HIV testing of patients than in screening donated blood for transfusions?
A. It isn't-both are equally dangerous/significant. False-positives in PEOPLE can lead to psychological trauma, but false-positives in BLOOD could lead to the useful blood being disposed. B. A false-positive in a PERSON is easily retestable. This makes it more significant, because we would simply quickly retest the person to verify their actual HIV status. C. A false-positive in BLOOD is easily retestable. This makes it less significant, because we would simply quickly retest the blood to verify its actual HIV status. D. This statement is backwards-false-positives in blood testing are more significant. If the false-positive rate is high and we don't realize it, we're more likely to dispose useful blood. This could lead to acute shortages of blood for patients who need transfusions.
Twenty-five percent of all prescription drugs sold in the United States are based on substances derived from fewer than 50 species of plants
Indicate whether the statement is true or false
A protist that contains contractile vacuoles most likely lives ________
A) in a marine environment B) within the cells of another organism C) in fresh water D) in ice
Which of the following is/are macronutrients?
What will be an ideal response?