Atoms & Carbon Molecules
MISC
The Properties of Water
Cell Membrane and Transport
Enzymes & Reactions
100

Atoms are composed of

 protons, neutrons, and electrons

100

What is diffusion?

Molecules move from a high to low concentration without energy

100

A molecule, like water, that has a partial positive charge on one side and a partial negative charge on the other side is called

polar molecule

100

Which type of transport does not require energy?

Passive transport

100
An enzyme a. is not used up when catalyzing a reaction. b. lowers the activation energy of a reaction. c. bonds with a substrate molecule at the enzyme's active site. d. all of the above.
all of the above
200

What atoms are found in all macromolecules?

C H O

200

The type of transfer that requires energy is called

active transport

200

Which side of a water molecule has a slightly - charge?

Oxygen

200

Which type of transport moves from a low to high concentration?

active transport

200
Enzymes a. are able to heat up molecules so that they can react. b. always provide carbon dioxide for chemical reactions. c. are biological catalysts. d. absorb excess heat so that reactions occur at low temperatures.
are biological catalysts
300

What are the monomers of carbohydrates?  

sugars or glucose or monosacchrides

300
Weak attractions between polar molecules are ______________ bonds.
hydrogen
300

The attraction that causes water to bond together to form drops is __________________.

cohesion

300
If there is more sugar and less water outside of the cell, what will happen to the cell?

the cell will shrink because the water will move out

300
The starting materials for chemical reactions are called _________________, while the new substances that are formed are called _______________.
reactants; products
400

Long chains of nucleotides are called _____________ ______.

Nucleic Acids

400
What denatures an enzyme?

heat, pH changes, salt, alcohol

400

Due to the polarity of water, water molecules form which type of bond between other water molecules?

hydrogen bonds

400

Which type of transport do molecules move from a high to low concentration through a membrane protein?

Facilitated Diffusion

400
The energy needed to start a chemical reaction is called ______________ ___________.
activation energy
500

Which macromolecules provide ENERGY?

Carbohydrates and Lipids

500
The portion of an enzyme molecule into which a specific substrate bonds is called the __________ _______.
active site
500
Water heats and cools more ____________ than other liquids.
slowly
500

The majority of the cell membrane is composed of which biomolecule?

lipids

500
The molecule on which an enzyme acts is called the ________________.
substrate
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