Viruses are ______ -coated fragments of DNA or RNA.  

Fill in the blank(s) with the appropriate word(s).


protein

Biology & Microbiology

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Polarized cells are characterized by

A) random orientation within a tissue. B) a polar flagellum. C) random orientation within an organ. D) distinct apical and basolateral sides. E) both choices B and D

Biology & Microbiology

What are the three glands that produce the liquid portion of semen?

A. prostate, seminal vesicles, bulbourethral B. hypothalamus, prostate, Leydig C. Leydig, prostate, bulbourethral D. seminal vesicles, hypothalamus, bulbourethral E. seminal vesicle, Leydig, hypothalamus

Biology & Microbiology

What three features serve to distinguish vascular plants from nonvascular plants?

What will be an ideal response?

Biology & Microbiology

Which structure in bird and mammalian embryos functions like the blastopore of frog embryos?

A) primitive streak B) neural plate C) archenteron D) notochord E) somites

Biology & Microbiology