Valencia College Biology 1010C lab practical exam 1
Questions With Complete Solutions
_______is defined as the diffusion of water across a semi-
permissible membrane form an area of greater to an area of
lesser concentration. Correct Answers Osmosis
A hypothesis must be testable Correct Answers True
An_________ environment is balanced so the water enters and
leaves the cells at the same rate. Correct Answers Isotonic
By what process did water use to move across the membrane in
our blood cell experiment? Correct Answers Osmosis
How did you determine the effects of the different solutions
tonicities on the cell? Correct Answers We looked at the cells
microscopically to determine the change in their cell shape.
How do the course focus and fine focus knobs work on a bright
field microscope? Correct Answers The focus knob moves the
stage up and down.
How would you interpret a positive response from a pill bug?
Correct Answers They like the substance but aren't sure why
If you added a 0.1% solute solution to your red blood cells what
"Scientific Term" would describe the resulting shape of the
cells? Correct Answers Lysed
, If your ocular magnifies 10X and your objective lens magnifies
100X then your total magnification would be_____ Correct
Answers 1000
If your ocular magnifies 10X and your objective lens magnifies
at 4X then your total magnification would be____ Correct
Answers 40
In a real lab setting, it is best practice to soak the dialysis tubing
in iodine to increase its's flexibility. Correct Answers False,
they do not soak in iodine.
In the DIFFUSION ACROSS A SELECTIVELY PERMEABLE
MEMBRANE experiment, what chemical reagent did you use to
detect starch in solution? Correct Answers Iodine
In what ways were the Euglena and Elodea cells similar?
Correct Answers 1) presence of nucleus
2)presence of chloroplast
3)presence of cell membrane
Membranes are important in the living cell because____ Correct
Answers 1) they regulate passage of nutrients into the cell
2) it divides a eukaryotic cel into a discrete functional
compartments.
3) it separates a cell from its environment.
4) they regulate passage of waste and other molecules out of the
cell.
Questions With Complete Solutions
_______is defined as the diffusion of water across a semi-
permissible membrane form an area of greater to an area of
lesser concentration. Correct Answers Osmosis
A hypothesis must be testable Correct Answers True
An_________ environment is balanced so the water enters and
leaves the cells at the same rate. Correct Answers Isotonic
By what process did water use to move across the membrane in
our blood cell experiment? Correct Answers Osmosis
How did you determine the effects of the different solutions
tonicities on the cell? Correct Answers We looked at the cells
microscopically to determine the change in their cell shape.
How do the course focus and fine focus knobs work on a bright
field microscope? Correct Answers The focus knob moves the
stage up and down.
How would you interpret a positive response from a pill bug?
Correct Answers They like the substance but aren't sure why
If you added a 0.1% solute solution to your red blood cells what
"Scientific Term" would describe the resulting shape of the
cells? Correct Answers Lysed
, If your ocular magnifies 10X and your objective lens magnifies
100X then your total magnification would be_____ Correct
Answers 1000
If your ocular magnifies 10X and your objective lens magnifies
at 4X then your total magnification would be____ Correct
Answers 40
In a real lab setting, it is best practice to soak the dialysis tubing
in iodine to increase its's flexibility. Correct Answers False,
they do not soak in iodine.
In the DIFFUSION ACROSS A SELECTIVELY PERMEABLE
MEMBRANE experiment, what chemical reagent did you use to
detect starch in solution? Correct Answers Iodine
In what ways were the Euglena and Elodea cells similar?
Correct Answers 1) presence of nucleus
2)presence of chloroplast
3)presence of cell membrane
Membranes are important in the living cell because____ Correct
Answers 1) they regulate passage of nutrients into the cell
2) it divides a eukaryotic cel into a discrete functional
compartments.
3) it separates a cell from its environment.
4) they regulate passage of waste and other molecules out of the
cell.
