Review Game Zone
Flash Cards
(current)
Games
Teachers
Search
Essentials Of Biology Chapter 2--Part 2
Test Description: Part 2 of 2
Instructions: Answer all questions to get your test result.
1) Human body cells are approximately ______ water.
A
50-55%
B
25-35%
C
70-95%
D
90-95%
2) The tendency of molecules of the same kind to stick together is called ______.
A
bonding
B
cohesion
C
polarity
D
adhesion
3) Why (if you are careful) are you able to float a needle on the surface of water?
A
The covalent bonds that hold a water molecule together are responsible for this ability
B
Water has adhesive properties.
C
A single needle is less dense than water.
D
The surface tension that is a result of water's cohesive properties makes this possible.
4) Sweating cools your body by ______.
A
hydrogen bonding
B
evaporative cooling
C
radiation
D
cohesion
5) As water freezes, ______.
A
its molecules move farther apart
B
it loses its polarity
C
it cools the surrounding environment
D
its hydrogen bonds break apart
6) Sugar dissolves when stirred into water. The sugar is the ______, the water is the ______, and the sweetened water is the ______.
A
solution... solvent... solute
B
solution... solute... solvent
C
solute... solvent... solution
D
solvent... solute... solution
7) A base ____________.
A
removes H2O molecules from a solution
B
removes OH- ions from a solution
C
removes H+ ions from a solution
D
decreases the pH of a solution
8) The lower the pH of a solution, the ______.
A
less toxic the solution
B
greater the number of oxygen atoms
C
more acidic the solution
D
higher the OH— concentration
9) What name is given to substances that resist changes in pH?
A
buffers
B
sugars
C
bases
D
salts
10) Household bleach _______________ than household ammonia .
A
has a higher H+ concentration
B
has 100 times higher H+ concentration
C
is more acidic
D
has a lower H+ concentration
11) If the brain is not properly hydrated, ___________________.
A
long-term memory recall is reduced
B
all of these
C
short-term memory is reduced
D
you may get headaches
12) People who exercise regularly ___________________.
A
all of these
B
can increase their IQ scores
C
react to stress better
D
can learn faster than couch potatoes
*select an answer for all questions
Check Results & Get Answers
Play Games with the Questions Above
Teachers: Create FREE classroom games with your questions
Click for more info!
©2007-2024
ReviewGameZone.com
|
About
|
Privacy
|
Contact
|
Terms
|
Site Map
WAIT! Find what you needed?
×
Still Looking for the Answers?
Have Another Question?
Play a Review Game with These Questions?
Want to Make Your Own Test Like This One?