Biology Practice Test

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

published on March 11, 20149 responses 1 5.0★ / 5

What connects water molecules to one another.

electrons
hydrogen bonds
surface tension

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

What macromolecule is present in cell membranes?

Lipids
Proteins
Carbohydrates

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

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

water density
hydrogen bonds
capillary action

What is the reaction that synthesizes monomers?

Hydrolysis
Denaturization
Dehydration Synthesis

which of these is a non polar molecule?

water
sugar
fats

Why is water considered a universal solvent?

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

What is the function of neucleic acids?

break down fatty acids
manage genetic energy
create antibodies

What is the function of carbohydrates?

energy storage
cell structure
enzymes

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

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

What are the structures of proteins?

amino acids
glucose
antibodies

What has the lowest pH value?

Tomato juice
Ammonia
Baking soda

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.