BISC 131 FINAL LaTech Exam Questions
and Answers
Which vessel should be used to make accurate measurements of volumes of liquid? -
Answer -graduated cylinder
Grams are measurements of? - Answer -mass
a spectrophotometer functions by? - Answer -Emitting light at a sample and then
detecting how much light passes through it
if you are given a 100% stock and are asked to prepare 10 mL of a 10% solution how
much of the stock and of water would you combine? - Answer -1 mL stock and 9 mL
water
what is the name of the instrument pictured below? - Answer -spectrophotometer
what is the function of the alga-gro reagant? - Answer -a source of nutrients for the
algae
How were the blank tubes different from your experimental tubes? - Answer -the blanks
lacked algae
which of the following is a control variable? - Answer -amount of algae
what parameter of your tubes of algae was measured over and over again? - Answer -
optical density
the process in which molecules in fluid move until their distribution is uniform is? -
Answer -diffusion
water is a - Answer -solvent
osmosis is the movement of water across the semipermeable membrane from? -
Answer -area of low solute concentration to high solute concentration
what could be done to a solution in order to increase the rate of diffusion of particles in
that solution? - Answer -increase the temperature
and Answers
Which vessel should be used to make accurate measurements of volumes of liquid? -
Answer -graduated cylinder
Grams are measurements of? - Answer -mass
a spectrophotometer functions by? - Answer -Emitting light at a sample and then
detecting how much light passes through it
if you are given a 100% stock and are asked to prepare 10 mL of a 10% solution how
much of the stock and of water would you combine? - Answer -1 mL stock and 9 mL
water
what is the name of the instrument pictured below? - Answer -spectrophotometer
what is the function of the alga-gro reagant? - Answer -a source of nutrients for the
algae
How were the blank tubes different from your experimental tubes? - Answer -the blanks
lacked algae
which of the following is a control variable? - Answer -amount of algae
what parameter of your tubes of algae was measured over and over again? - Answer -
optical density
the process in which molecules in fluid move until their distribution is uniform is? -
Answer -diffusion
water is a - Answer -solvent
osmosis is the movement of water across the semipermeable membrane from? -
Answer -area of low solute concentration to high solute concentration
what could be done to a solution in order to increase the rate of diffusion of particles in
that solution? - Answer -increase the temperature
