Unit 1 - Chemistry of Life

Question 1

Endothermic reactions _________ thermal energy, or heat, from the surrounding environment.

Accepted Answer

absorb

Question 2

_____________ have a negative charge, do not have measurable mass, and determine the ion state of an atom.

Accepted Answer

electrons

Question 3

Which of the following are functions for lipids?

Accepted Answer

membranes, energy storage

Question 4

What is the monomer for nucleic acids?

Accepted Answer

nucleotide

Question 5

Water is a ______ solvent because it can dissolve MANY different substances, especially polar and ionic compounds.

Accepted Answer

universal

Question 6

A(n) _____________ forms when two or more atom types are covalently bonded together.

Accepted Answer

molecule

Question 7

When water freezes, its molecular structure changes, and molecules cannot form a dense structure. What's this called?

Accepted Answer

low solid density

Question 8

What is the monomer for proteins?

Accepted Answer

amino acid

Question 9

Enzymes catalyze reactions by ___________ the activation energy needed for a reaction to begin.

Accepted Answer

lowering

Question 10

Isotopes are atoms of the same element that have different numbers of __________ and have different masses.

Accepted Answer

neutrons

Question 11

________ is the property of water that allows water molecules to stick to other molecules, especially polar substances.

Accepted Answer

adhesion

Question 12

In a covalent bond, electrons are shared _________ between atoms.

Accepted Answer

equally

Question 13

The pH scale ranges from 0-14, where fluids with a pH of 7 are considered ________.

Accepted Answer

neutral

Question 14

A high concentration of H+ ions means that a fluid is ________.

Accepted Answer

acidic

Question 15

In an ionic bond, electrons are ___________ from one atom to the other.

Accepted Answer

donated

Question 16

What is the monomer for carbohydrates?

Accepted Answer

monosaccharide

Question 17

____________ are the starting materials for a chemical reaction.

Accepted Answer

reagents

Question 18

Water can absorb and store LOTS of heat, releasing it slowly over time. What is this property of water called?

Accepted Answer

high specific heat

Question 19

What environmental conditions affect an enzyme's ability to function?

Accepted Answer

temperature, pH level

Question 20

A(n) _________ is a substance made up of one type of atom.

Accepted Answer

element

Question 21

Exothermic reactions __________ energy as heat.

Accepted Answer

release

Question 22

The substance that an enzyme acts upon is called the __________.

Accepted Answer

substrate

Question 23

Enzymes cannot be used again once they have released a product.

Accepted Answer

False

Question 24

____________ have a positive charge, determine the type of atom, and factor into the mass of an atom

Accepted Answer

protons

Question 25

The deep fold in an enzyme's structure is called the ____________.

Accepted Answer

active site

Question 26

A(n) ___________ is the smallest unit of matter than cannot be broken down by chemical means.

Accepted Answer

atom

Question 27

A(n) ____________ is a structure made of repeating units called monomers.

Accepted Answer

polymer

Question 28

Which of the following are functions for carbohydrates?

Accepted Answer

source of energy

Question 29

Which of the following are functions for nucleic acids?

Accepted Answer

store hereditary information

Question 30

Which of the following are functions for proteins?

Accepted Answer

enzyme activity, mechanical

Question 31

When an enzyme uncoils due to environmental conditions, it becomes ___________ and can no longer function.

Accepted Answer

denatured

Question 32

In hydrogen or polar bonds, electrons are shared ______, which leads to slightly negative and slightly positive charges.

Accepted Answer

unequally

Question 33

FROM THE DEMONSTRATION & LAB: Which of the following fluids were acidic?

Accepted Answer

Gatorade, Monster Energy Drink

Question 34

A(n) ____________ forms when two or more atoms of different elements combine.

Accepted Answer

compound

Question 35

__________ are the newly-formed substances that come out of a chemical reaction.

Accepted Answer

products

Question 36

FROM THE DEMONSTRATION & LAB: Which of the following fluids were basic?

Accepted Answer

hand soap, Windex

Question 37

Organic compounds contain _________ while inorganic compounds do not.

Accepted Answer

carbon

Question 38

What is the monomer for lipids?

Accepted Answer

glycerol & fatty acid chains

Question 39

____________ is the property of water that allows water to stick to other water molecules.

Accepted Answer

cohesion

Question 40

A high concentration of OH- ions means that a fluid is __________.

Accepted Answer

basic

Unit 1 - Chemistry of Life

Questions 40

Unit 1 - Chemistry of Life

Questions 40