BIO 148 SECTION 1: UNITY OF LIFE
PRACTICE QUESTIONS AND
ANSWERS
Living things must be made up of many cells
True
False - Correct Answers -False
All organisms breathe.
True
False - Correct Answers -False
All cells are the same size and shape
True
False - Correct Answers -False
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?
1)Record their movement, because movement is characteristic of all life.
2)Record their temperature, because all living organisms maintain body temperatures
different from their environment.
3)None of the options listed demonstrate that the dehydrated tardigrades are alive
4)Record their energy use, because all living organisms acquire and use energy. -
Correct Answers -Record their energy use, because all living organisms acquire and
use energy.
Which of the following is TRUE about all living things?
All living things are made of cell(s) with a nucleus
None of these is true about all living things
All living things breathe.
All living things require oxygen.
PRACTICE QUESTIONS AND
ANSWERS
Living things must be made up of many cells
True
False - Correct Answers -False
All organisms breathe.
True
False - Correct Answers -False
All cells are the same size and shape
True
False - Correct Answers -False
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?
1)Record their movement, because movement is characteristic of all life.
2)Record their temperature, because all living organisms maintain body temperatures
different from their environment.
3)None of the options listed demonstrate that the dehydrated tardigrades are alive
4)Record their energy use, because all living organisms acquire and use energy. -
Correct Answers -Record their energy use, because all living organisms acquire and
use energy.
Which of the following is TRUE about all living things?
All living things are made of cell(s) with a nucleus
None of these is true about all living things
All living things breathe.
All living things require oxygen.
