An individual with a vitamin D deficiency would experience which of the following problems?
A. difficulty absorbing sufficient amounts of
calcium from the diet
B. slow wound healing
C. bleeding gums and loss of teeth
D. anemia
E. nervous system disorders
A
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Cotyledons, or "seed leaves," absorb food molecules stored in the
A) megaspore. B) ovary wall. C) sporophyte. D) endosperm. E) gametophyte.
The European Neanderthals were replaced about 34,000 years ago by
A. Homo erectus. B. Homo heidelbergensis. C. Neanderthals. D. Homo habilis. E. Cro-Magnons.
Which is correct about influenza?
A. The virus is grown in poultry eggs for vaccines. B. Influenza A has a mortality rate of close to 35%. C. Antigenic shift is a minor change in the viral strain. D. The virus binds to the intestinal mucosa. E. The virus is found in swine and cats.
Darwin noticed that many organisms seemed well suited to
A. Being preserved as fossils B. Providing humans with food C. Surviving in the environment in which they lived D. Swimming from South America to the Galápagos Island