BIO 148 UNIT 1 PRACTICE
QUESTIONS AND ANSWERS 2026
All organisms breathe.
True
False - ANSWERSFalse
What is a feature that is found in eukaryotes but not in prokaryotes?
DNA
nucleus - ANSWERSnucleus
Living things must be made up of many cells
True
False - ANSWERSFalse
All cells are the same size and shape
True
False - ANSWERSFalse
Tardigrades, also called water bears, are microscopic segmented animals with eight
legs. They are normally about 70 percent body water, but they can survive extreme
dehydration (to just a few percent body water) for up to 10 years! After a decade you
can add water and the tardigrades will start swimming around.You enter a lab and your
new boss gives you five dehydrated tardigrades and asks you to demonstrate that the
tardigrades are alive in their dehydrated state. How would you demonstrate this?
None of the options listed demonstrate that the dehydrated tardigrades are alive
Record their energy use, because all living organisms acquire and use energy.
Record their movement, because movement is characteristic of all life.
Record their temperature, because all living organisms maintain body temperatures
different from their environment - ANSWERSRecord their energy use, because all living
organisms acquire and use energy.
Who is most likely to have the highest fitness?
A cow who has triplets but does not survive the birth to care for her three calves
A cow that has one calf that is healthy until reproductive age
A cow that had twins but does not have enough milk to feed both calves (so the two
calves are undernourished)
, A cow who has one calf that dies after 3 days - ANSWERSA cow that has one calf that
is healthy until reproductive age
Which of the following is TRUE about all living things?
All living things require oxygen.
None of these is true about all living things
All living things are made of cell(s) with a nucleus
All living things breathe. - ANSWERSNone of these is true about all living things
All prokaryotic cells have a cell membrane.
True
No answer text provided.
False
No answer text provided. - ANSWERSTrue
Heritable variation is necessary for natural selection to occur.
True
False - ANSWERSTrue
In biology, "fitness" is defined as the relative ability of an individual to survive long
enough to produce surviving offspring (pass on its genes) in a given environment
relative to others of the same species. According to this definition, which of the following
is the most fit?
*Surviving = survives until reproductive age
A beetle who reproduces twice, has 5 surviving offspring, and lives to old age
A beetle who reproduces once, has 10 surviving offspring, then dies
A beetle who reproduces three times, lives a long life and has 9 offspring. -
ANSWERSA beetle who reproduces once, has 10 surviving offspring, then dies
Ribosomes are platforms for making
RNA
proteins
DNA - ANSWERSproteins
Which of the following is a characteristic shared by all living things? (Choose the most
complete answer.)
They are composed of one or more cells, they contain ribosomes AND they use
proteins as their genetic material.
They are composed of one or more cells.
They use proteins as their genetic material.
QUESTIONS AND ANSWERS 2026
All organisms breathe.
True
False - ANSWERSFalse
What is a feature that is found in eukaryotes but not in prokaryotes?
DNA
nucleus - ANSWERSnucleus
Living things must be made up of many cells
True
False - ANSWERSFalse
All cells are the same size and shape
True
False - ANSWERSFalse
Tardigrades, also called water bears, are microscopic segmented animals with eight
legs. They are normally about 70 percent body water, but they can survive extreme
dehydration (to just a few percent body water) for up to 10 years! After a decade you
can add water and the tardigrades will start swimming around.You enter a lab and your
new boss gives you five dehydrated tardigrades and asks you to demonstrate that the
tardigrades are alive in their dehydrated state. How would you demonstrate this?
None of the options listed demonstrate that the dehydrated tardigrades are alive
Record their energy use, because all living organisms acquire and use energy.
Record their movement, because movement is characteristic of all life.
Record their temperature, because all living organisms maintain body temperatures
different from their environment - ANSWERSRecord their energy use, because all living
organisms acquire and use energy.
Who is most likely to have the highest fitness?
A cow who has triplets but does not survive the birth to care for her three calves
A cow that has one calf that is healthy until reproductive age
A cow that had twins but does not have enough milk to feed both calves (so the two
calves are undernourished)
, A cow who has one calf that dies after 3 days - ANSWERSA cow that has one calf that
is healthy until reproductive age
Which of the following is TRUE about all living things?
All living things require oxygen.
None of these is true about all living things
All living things are made of cell(s) with a nucleus
All living things breathe. - ANSWERSNone of these is true about all living things
All prokaryotic cells have a cell membrane.
True
No answer text provided.
False
No answer text provided. - ANSWERSTrue
Heritable variation is necessary for natural selection to occur.
True
False - ANSWERSTrue
In biology, "fitness" is defined as the relative ability of an individual to survive long
enough to produce surviving offspring (pass on its genes) in a given environment
relative to others of the same species. According to this definition, which of the following
is the most fit?
*Surviving = survives until reproductive age
A beetle who reproduces twice, has 5 surviving offspring, and lives to old age
A beetle who reproduces once, has 10 surviving offspring, then dies
A beetle who reproduces three times, lives a long life and has 9 offspring. -
ANSWERSA beetle who reproduces once, has 10 surviving offspring, then dies
Ribosomes are platforms for making
RNA
proteins
DNA - ANSWERSproteins
Which of the following is a characteristic shared by all living things? (Choose the most
complete answer.)
They are composed of one or more cells, they contain ribosomes AND they use
proteins as their genetic material.
They are composed of one or more cells.
They use proteins as their genetic material.
