BIO 108 LAB MIDTERM EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE 2026
A statement of the expected results of an experiment based on the hypothesis is the
____________________. - Answers prediction
A hypothesis must me testable and ___________________. - Answers falsifiable
Based on the evidence, stomach ulcers are most likely caused by _________________. - Answers
bacteria
Scientists investigating the effects of a range of temperatures on the occurrence of allergens in urban
environments measured the number of days that ragweed pollen was present in downtown Kansas
City lots and in the nearby rural fields in early spring and late summer months.
What is the independent variable, dependent variable and the control group? - Answers independent
variable: range of temperatures (spring/summer)
dependent variable: number of days pollen was present
control group: where pollen was present
Reminder: be able to suggest a control group to a given scenario for an experiment.
Answer *ok* to this question - Answers ok
Compound light microscopes have ____________________. - Answers at least two lenses
Switching from a low power to a high power lens on your microscope will allow you to see
____________________. - Answers a few cells at once
The dissolving agent in a solution is called the ____________. - Answers solvent
Osmosis is the movement of water from a ___________ water concentration to a __________ water
concentration. - Answers high; low
Animals get both their energy and carbon from organic compounds. Therefore, animals are
____________________. - Answers chemo-heterotrophs
For a compound microscope, what is the total magnification if you are using the 4X objective? -
Answers 40X
For a compound microscope, if you move a specimen to the left, then the image will move
____________________. - Answers to the right
When looking at the letter "e" with your microscope, the image was _________________. - Answers
inverted
An animal cell placed in a hypertonic solution would ______________. - Answers shrink
Molecules of a liquid or gas are constantly in motion because of the intrinsic ________________
energy in all atoms and molecules. - Answers kinetic
In the dialysis experiment, the __________ should have remained in the bag and turned
____________ in color in the presence of _____________. - Answers starch; purple; iodine
Amylase is an enzyme that digests _____________. - Answers starch into maltose
A change in an enzyme's 3-dimensional shape will alter its _______________. - Answers activity
how can you calculate the osmolarity? - Answers it is when the weight change goes from a positive
number to a negative.
Maltose is a disaccharide made up of _________________. - Answers glucose only
An increase in amylase activity on starch digestion can be monitored by the ______________ of a
dark purple color in the _____________ of iodine. - Answers disappearance; presence
An organic compound that is required for enzymatic function is known as a __________________. -
Answers coenzyme
True/False: All wavelengths of photons are absorbed by plant pigments. - Answers False
In the chromatography lab, the solvent you will use for paper chromatography (petrolleum ether and
acetone) is relativity _________________. - Answers nonpolar and flammable
Why do enzymes work better at 37°C? - Answers 37°C is the normal body temperature.
In the paper chromatography experiment, the most nonpolar plant pigment, and therefore closest to
the front, was _________________. - Answers beta carotene
A photon with a wavelength of 10 m would have a ______________ frequency (energy) compared to
a photon with a wavelength of 0.0001 m. - Answers lower
A statement of the expected results of an experiment based on the hypothesis is the
____________________. - Answers prediction
A hypothesis must me testable and ___________________. - Answers falsifiable
Based on the evidence, stomach ulcers are most likely caused by _________________. - Answers
bacteria
Scientists investigating the effects of a range of temperatures on the occurrence of allergens in urban
environments measured the number of days that ragweed pollen was present in downtown Kansas
City lots and in the nearby rural fields in early spring and late summer months.
What is the independent variable, dependent variable and the control group? - Answers independent
variable: range of temperatures (spring/summer)
dependent variable: number of days pollen was present
control group: where pollen was present
Reminder: be able to suggest a control group to a given scenario for an experiment.
Answer *ok* to this question - Answers ok
Compound light microscopes have ____________________. - Answers at least two lenses
Switching from a low power to a high power lens on your microscope will allow you to see
____________________. - Answers a few cells at once
The dissolving agent in a solution is called the ____________. - Answers solvent
Osmosis is the movement of water from a ___________ water concentration to a __________ water
concentration. - Answers high; low
Animals get both their energy and carbon from organic compounds. Therefore, animals are
____________________. - Answers chemo-heterotrophs
For a compound microscope, what is the total magnification if you are using the 4X objective? -
Answers 40X
For a compound microscope, if you move a specimen to the left, then the image will move
____________________. - Answers to the right
When looking at the letter "e" with your microscope, the image was _________________. - Answers
inverted
An animal cell placed in a hypertonic solution would ______________. - Answers shrink
Molecules of a liquid or gas are constantly in motion because of the intrinsic ________________
energy in all atoms and molecules. - Answers kinetic
In the dialysis experiment, the __________ should have remained in the bag and turned
____________ in color in the presence of _____________. - Answers starch; purple; iodine
Amylase is an enzyme that digests _____________. - Answers starch into maltose
A change in an enzyme's 3-dimensional shape will alter its _______________. - Answers activity
how can you calculate the osmolarity? - Answers it is when the weight change goes from a positive
number to a negative.
Maltose is a disaccharide made up of _________________. - Answers glucose only
An increase in amylase activity on starch digestion can be monitored by the ______________ of a
dark purple color in the _____________ of iodine. - Answers disappearance; presence
An organic compound that is required for enzymatic function is known as a __________________. -
Answers coenzyme
True/False: All wavelengths of photons are absorbed by plant pigments. - Answers False
In the chromatography lab, the solvent you will use for paper chromatography (petrolleum ether and
acetone) is relativity _________________. - Answers nonpolar and flammable
Why do enzymes work better at 37°C? - Answers 37°C is the normal body temperature.
In the paper chromatography experiment, the most nonpolar plant pigment, and therefore closest to
the front, was _________________. - Answers beta carotene
A photon with a wavelength of 10 m would have a ______________ frequency (energy) compared to
a photon with a wavelength of 0.0001 m. - Answers lower
