Which of the following describes an organ?
a. groups of similar cells that perform specialized functions
b. composed of at least two types of tissues
c. structure that contains DNA
d. a thin bilayer that separates individual cells
B
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An amino acid is to a protein as a ________ is to a nucleic acid.
A. glucose B. glycerol C. nucleotide D. fatty acid E. cellulose
Over time, cancerous cells typically lose the cell adhesion molecules embedded in their plasma membrane. Loss of
these molecules is best associated with which of the following traits of cancer cells?
a. increased rate of cell division b. production of new proteins c. angiogenesis d. migration to new locations in the body e. loss of chromosomes
If a fungicide was applied near a plant, how might it kill the plant?
A. By killing the fungus associated with the plant's roots B. By killing the insects that pollinate the plants C. By breaking down the chitin in the plant's cell walls D. Fungicides kill fungi, not plants, so the plant would be fine.
Which membrane reduces friction in joints?
a. serous b. cutaneous c. mucous d. synovial e. tissue