Na+ ion concentrations are higher outside the cell than inside the cell. What type of transport system is required to move Na+ ions in and out of the cell?
A. Na+ moves into the cell by facilitated diffusion and out of the cell by active transport
B. Na+ moves in and out of the cell by passive diffusion
C. Na+ moves in and out of the cell by active transport
D. Na+ moves into the cell by active transport and out of the cell by facilitated diffusion
E. Na+ moves into the cell by facilitated diffusion and can not move out of the cell
A. Na+ moves into the cell by facilitated diffusion and out of the cell by active transport
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Viruses are considered ultramicroscopic because they range in size from 2 mm to 450 mm.
Answer the following statement true (T) or false (F)
Filamentous fungi
A) are photosynthetic & found in marine environments. B) produce buds during sexual reproduction. C) have hyphae that make up mycelia. D) all of the above are true.
What is the chemical composition of the F factor?
a) Protein b) DNA c) DNA and protein d) carbohydrate e) carbohydrate and protein
The (definitive/intermediate/primary) host is where immature stages of parasites develop.
Fill in the blank(s) with the appropriate word(s).