When a ________ enters a host cell, it loses the outermost protein layer and is then referred to by virologists as a double-layered particle (DLP).
Fill in the blank(s) with the appropriate word(s).
rotavirus, Rotavirus
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Integrins are glycoproteins that help link the cytoskeleton and the:
A. cytoplasm. B. cell wall. C. ribosomes. D. extracellular matrix.
Which of the following is a difference between electronegative and electropositive atoms?
A. Electronegative atoms tend to lose electrons. B. Electropositive atoms tend to gain electrons. C. Because oxygen (O) is strongly electropositive it will have a partial positive charge in H2O. D. Because hydrogen (H) is strongly electronegative it will have a partial negative charge in H2O. E. As atomic radii decrease, atoms tend to become more electronegative.
The tapetum lucidum is a key adaptation for
A. visual function in brightly lit shallow marine waters. B. visual sensitivity in nocturnally active animals. C. visual function in prey species that require wide fields of vision. D. visual function in the deep sea. E. visual function in fast moving predators.
The normal flow of blood would be
A. heart ® capillaries ® arteries ® veins ® heart. B. heart ® arteries ® capillaries ® veins ® heart. C. heart ® veins ® capillaries ® arteries ® heart. D. heart ® veins ® arteries ® capillaries ® heart.