Sampling error can be minimized by which one of the following?
a. using a large sample size
b. conducting the experiment or observation only once
c. throwing out data that does not fit the conclusion
d. using a small subset of a larger population
e. carefully selecting samples to match the prediction
ANSWER: a
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Which of these statements is not true for bacterial capsules?
A) For Streptococcus pneumoniae, the encapsulated strain is more virulent. B) Pathogenic and nonpathogenic bacteria can produce capsules. C) The importance of the capsule to virulence for Streptococcus pneumoniae can be determined because there are strains both with and without the capsule. D) Capsules related to virulence are produced by the causative agents of anthrax and bubonic plague. E) Antibodies produced against a capsule cannot affect whether disease will occur.
A male turkey that imprinted onto a human at hatching is transferred as an older juvenile to a flock of "normal" turkeys. When this turkey reaches sexual maturity, he will probably try to court
A) male, female, or immature turkeys indiscriminately. B) immature male turkeys. C) mature female turkeys. D) humans.
Which of the following explanations tells you why Joseph became infected with chickenpox in the first place?
A. Joseph should not have been infected because he had passive natural immunity from breastfeeding as a baby. B. His mother should have had gamma globulin administered so he would have passive artificial immunity. C. There is no way Joseph could have been protected from the infection, since he did not receive active artificial immunity through the form of a vaccine. D. Joseph probably has a primary immunodeficiency disease, otherwise there is no reason humans should be infected with chickenpox.
A decrease in blood glucose from skipping a meal will cause the ____ to secrete glucagon which will cause the ____
to break down glycogen into glucose. a. liver; pancreas b. pancreas; gall bladder c. spleen; pancreas d. pancreas; spleen e. pancreas; liver