STRAIGHTERLINE MICROBIOLOGY LAB
BIO250L LAB TWO CULTURING ASEPTIC
TECHNIQUE FINAL STUDY GUIDE 2026
QUESTIONS WITH ANSWERS GRADED A+
⩥ concentration gradient. Answer: when molecules are unevenly
distributed resulting in an area of higher and lower concentration
⩥ what is the correlation between molecular mass and rate of diffusion.
Answer: the larger and heavier the molecule the slower it will diffuse
⩥ osmosis. Answer: Diffusion of water through a selectively permeable
membrane
⩥ selectivly permeable membrane. Answer: membrane that only allows
certain things to come in while keeping other things out
⩥ hypertonic. Answer: the concentration of solutes is greater outside the
cell than inside it
⩥ hypotonic. Answer: the concentration of solutes is greater inside the
cell than outside of it
, ⩥ isotonic. Answer: the concentration of solutes is the same inside and
outside the cell
⩥ apical surface of epithelial tissue. Answer: layer of cells closest to the
lumen
⩥ basal surface. Answer: The bottom layer of epithelial tissue that
attaches to the basement membrane
⩥ basement membrane. Answer: Cells at the base of an epithelial layer
are attached to this.
⩥ simple epithelium. Answer: single layer of cells
⩥ stratified epithelium. Answer: multiple layers of cells
⩥ goblet cells. Answer: cells that secrete mucus
⩥ cilia. Answer: The hairlike projections on the outside of cells that
move in a wavelike manner
⩥ lumen. Answer: An open space, such as within a blood vessel or the
intestine or outside the body (A)
BIO250L LAB TWO CULTURING ASEPTIC
TECHNIQUE FINAL STUDY GUIDE 2026
QUESTIONS WITH ANSWERS GRADED A+
⩥ concentration gradient. Answer: when molecules are unevenly
distributed resulting in an area of higher and lower concentration
⩥ what is the correlation between molecular mass and rate of diffusion.
Answer: the larger and heavier the molecule the slower it will diffuse
⩥ osmosis. Answer: Diffusion of water through a selectively permeable
membrane
⩥ selectivly permeable membrane. Answer: membrane that only allows
certain things to come in while keeping other things out
⩥ hypertonic. Answer: the concentration of solutes is greater outside the
cell than inside it
⩥ hypotonic. Answer: the concentration of solutes is greater inside the
cell than outside of it
, ⩥ isotonic. Answer: the concentration of solutes is the same inside and
outside the cell
⩥ apical surface of epithelial tissue. Answer: layer of cells closest to the
lumen
⩥ basal surface. Answer: The bottom layer of epithelial tissue that
attaches to the basement membrane
⩥ basement membrane. Answer: Cells at the base of an epithelial layer
are attached to this.
⩥ simple epithelium. Answer: single layer of cells
⩥ stratified epithelium. Answer: multiple layers of cells
⩥ goblet cells. Answer: cells that secrete mucus
⩥ cilia. Answer: The hairlike projections on the outside of cells that
move in a wavelike manner
⩥ lumen. Answer: An open space, such as within a blood vessel or the
intestine or outside the body (A)
