Tapeworms are most commonly found in persons who
a. eat undercooked rice.
b. walk barefoot in a rice field.
c. eat undercooked pork.
d. are bitten by mosquitoes.
e. are bitten by ticks.
C
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Which one of the following is believed to be the major event that led to the appearance of diverse, complex multicellular organisms on Earth?
A. the increase in atmospheric oxygen B. the appearance of animals C. the appearance of plants on land D. the appearance of bulk transport systems
A certain kind of snail can have a right-handed direction of shell coiling (DD or Dd) or left-handed coiling (dd)
However, if direction of coiling is due to a protein deposited by the mother in the egg cytoplasm, then a Dd egg-producing snail and a dd sperm-producing snail will have offspring of which genotype(s) and phenotype(s)? A) 1/2 Dd:1/2 dd; all right-coiling B) all Dd; all right-coiling C) 1/2 Dd:1/2 dd; half right-coiling and half left-coiling D) all Dd; half right-coiling and half left-coiling
Phil is conducting a seed germination experiment. He places 3 groups of lettuce seeds in a 34º Celsius incubator with adequate moisture. One set of seeds is placed in a dark area with no light source. A second set is placed under artificial light and third set of seeds is placed in direct sunlight. This experiment is intended to test Phil's hypothesis that light is necessary for lettuce seed germination.Based on the experimental design, which variable was the dependent variable?
A. Temperature B. Moisture C. Type of light D. Seeds in the dark E. Germination rate
Which of the following statements about the cerebrum is NOT true?
A. The cerebrum coordinates the activities of the other parts of the brain. B. It is the largest part of the human brain. C. The right hemisphere is associated with analytical reasoning and the left hemisphere is associated with artistic and musical ability. D. The two cerebral hemispheres are connected by the corpus callosum. E. The gray matter is outermost.