Biology Practice Test

Unit test one, water, macromolecules, molecules, enzymes, experiments, and more

published on March 11, 2014
1/15

Why is water considered a universal solvent?

You need it to live
It can dissolve anything
it is commonly used in solutions
2/15

What has the lowest pH value?

Tomato juice
Ammonia
Baking soda
3/15

What is adhesion?

attraction of water molecules to each other through hydrogen bonds
attraction of water molecules to any hydrophilic surface
attraction of water molecules strong enough to overcome the force of gravity.
4/15

What is cohesion?

attraction of water molecules to any hydrophilic surface
attraction of water molecules strong enough to overcome the force of gravity.
attraction of water molecules to each other through hydrogen bonds
5/15

What macromolecule is present in cell membranes?

Lipids
Proteins
Carbohydrates
6/15

What is the function of neucleic acids?

break down fatty acids
manage genetic energy
create antibodies
7/15

What is the force that pulls water up a trees roots?

water density
hydrogen bonds
capillary action
8/15

What is the function of carbohydrates?

energy storage
cell structure
enzymes
9/15

What is a controlled variable?

The variable that is manipulated
the variable that is not altered and is used to compare the altered tests
the reaction after the subject is manipulated
10/15

What demonstrates homeostasis?

You cutting your hair so it doesn't grow too long
getting a foot rub when you strain your foot muscle
you sweating when you are running
11/15

What connects water molecules to one another.

electrons
hydrogen bonds
surface tension
12/15

What are the structures of proteins?

amino acids
glucose
antibodies
13/15

what vitamin or mineral is necessary for the formation of bones and teeth

vitamin D and calcium
vitamin D and Protein
Vitamin A and iron
14/15

which of these is a non polar molecule?

water
sugar
fats
15/15

What is the reaction that synthesizes monomers?

Hydrolysis
Denaturization
Dehydration Synthesis