Which is the best way for people to get the vitamins and minerals needed for their bodies to function? A. through foods B. through water C. through respiration D. through a multivitamin A

Which term describes a person who is a carrier of the sickle-cell anemia trait? A. co-dominant B. Heterozygous C. homozygous dominant D. homozygous recessive B

Which disease is transmitted by a parasitic tick. A. rabies B Which disease is transmitted by a parasitic tick? A. rabies B. Malaria C. Lyme disease D. Alzheimer’s disease C

Which environmental toxin found in tuna fish has been linked to birth defects? A. oil B. Lead C. Mercury D. pesticides C

Which statement is most accurate about an individual with memory B-cells for chicken pox? A. The individual is contagious. B. The individual can get chicken pox again. C. The individual is unlikely to ever get chicken pox. D. The individual is unlikely to get chicken pox a second time. D

Phenylketonuria, or PKU, is a genetic condition that affects metabolism and can cause severe mental retardation in children. Children affected with PKU cannot digest foods containing the amino acid phenylalanine, like milk and diet soda. Which statement best identifies the cause of complications related to PKU? A. The body is unable to digest lipids. B. The body is unable to digest carbohydrates. C. The body is unable to produce a certain enzyme. D. The body is unable to produce a certain hormone. C

Polio, measles, and chicken pox are all caused by viruses Polio, measles, and chicken pox are all caused by viruses. Breakouts of these diseases have decreased significantly in recent years. How have these viral diseases been brought under control? A. by producing new antibiotics B. by administering specific vaccines C. by using recombinant DNA technology D. by genetically engineering the viruses B

The malarial Plasmodium is said to live a “double life The malarial Plasmodium is said to live a “double life.” Which statement best describes this? A. Plasmodium is parasitic only during part of its life. B. Plasmodium requires two hosts to complete its life cycle. C. Plasmodium spends part of its life cycle in water and part of its life in a host organism. D. Plasmodium is parasitic to plants while reproducing sexually and to animals while reproducing asexually. B

An individual is diagnosed with anemia An individual is diagnosed with anemia. Which body process would most likely be affected with this diagnosis? A. blood clotting B. transmission of nerve impulses C. maintenance of body temperature D. transport of oxygen to the cells of the body D

Which element is found in some paint and is especially harmful, even in small amounts, to the mental development of children ? A. lead B. Sulfur C. Nitrogen D. chromium A