Sulfur is an integral part of which of the following molecules?
A. vitamins
B. enzymes
C. amino acids
D. proteins
E. Sulfur can be an integral component of any
of these molecules.
E
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Which of the following cell types has NO nucleus?
A) erythrocytes B) lymphocytes C) phagocyte D) All of these cells lack a nucleus.
The scientific method can be best described as:
a. implementing an experiment. b. inductive and deductive reasoning. c. collecting data from the laboratory. d. an orderly set of procedures for learning about and interpreting the world. e. a rigid set of procedures that cannot be deviated from.
The gene for Tay-Sachs disease codes for a nonfunctional form of the enzyme hexosaminidase A (or Hex
A). It has been found that a person with only one-third the maximum amount of Hex A can function absolutely normally. Please characterize the heredity of Tay-Sachs disease. A) codominant B) recessive C) dominant D) multiple allelic
Which of the following is a group of parasitic flatworms?
A) leeches B) flukes C) nematodes D) sea anemones E) annelids