All cells have DNA to carry genetic information, a plasma membrane which serves as a selective barrier, and
mitochondria for the generation of energy.
Indicate whether the statement is true or false.
ANSWER: False - eukaryotic cells
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The fluid mosaic model proposed by Singer and Nicolson in 1972 explained that
A. the cell membrane was composed of lipids and proteins. B. the cell membrane was composed of a phospholipid bilayer between two layers of globular proteins. C. the cell membrane was composed of a phospholipid bilayer with globular proteins actually inserted into the bilayer. D. the cell membrane was composed of a phospholipid bilayer but the polar ends of the phospholipid molecules were reversed.
The dried residues of fine droplets from mucus or saliva that harbor and transmit pathogen are ________.
A. droplet nuclei B. mechanical vectors C. biological vectors D. aerosols E. fomites
Four of the five answers listed below are nonreproductive
parts of a flower. Select the EXCEPTION.
a. calyx b. anther c. corolla d. petal e. sepal
The two most closely related groups of fungi are the:
A) basidiomycetes and ascomycetes. B) basidiomycetes and zygomycetes. C) ascomycetes and zygomycetes. D) zygomycetes and chytrids.