An individual with Down syndrome has which type of chromosomal disorder?

a. Trisomy
b. Monosomy
c. Polyploidy
d. Chromosome inversion


a. Trisomy

An individual with Down syndrome has the Trisomy type of chromosomal disorder.

Biology & Microbiology

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A microtome is used to

A) view microscopic organisms. B) slice thin sections of specimens. C) focus short wavelengths of light. D) manipulate tiny objects. E) dissect cellular organelles.

Biology & Microbiology

Which of the following is not true about enzymes?

A. Enzymes have high-energy bonds between phosphates. B. Enzymes can be denaturated by heat and other agents. C. Enzymes participate in the cell's chemical reactions. D. Enzymes are found in all cells. E. Enzymes are catalysts.

Biology & Microbiology

Hemoglobin contains which element?

a. chlorine b. sodium c. iron d. copper e. magnesium

Biology & Microbiology

The combustion of fossil fuels is altering the balance between photosynthesis and ________.

A. sunlight B. respiration C. growth D. decomposition

Biology & Microbiology