Which of the following allows a virus to attach to a host cell?
a. A viral receptor must be present on the host cell.
b. The cell must be in the process of apoptosis.
c. The virus uses its tail fibers to cling to the cell.
d. The cell must be already engaged in endocytosis.
a. A viral receptor must be present on the host cell.
A viral receptor must be present on the host cell for the virus to attach.
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As part of their reproductive cycle, helminths produce egg and sperm cells. Both of these eukaryotic cell types have an outer surface composed of polysaccharides known as the ________.
A. microtubule B. cell wall C. glycocalyx D. cyst E. cell membrane
The prime factor that drives coral bleaching is ____
a. fungal infection b. water levels changing c. salinity levels changing d. light levels changing e. temperature changes
The archaea include which of the following?
a. extreme thermophiles b. alga c. protista d. animals e. plants
Which group consists entirely of multicellular eukaryotic consumers?
A) plants B) protists C) animals D) fungi