Unit 2 Review

Rain with pH lower than 5 will deposit acid, how would this cause damage to forest?

Level of protein structure that involves side chain interactions

There are ____ naturally occurring chemical elements.

The atomic number of an atom is

The making and breaking of molecules in the body requires the aid of ____ to help reactions

In the water molecule

A solution with a pH of 8 is

A protein is a polymer made up of which monomer

An Anion has

ATP is used as the immediately usable form of ____ inside of cells

Molecules that ionize in water act as

Excess calories are stored in the body as ____ in adipose (fat) tissue.

Six-carbon sugars all have the same molecular formula, but differ structurally, meaning they

____ chemical reactions combine two or more reactants to make a more complex molecule

The property of water in which water is attracted to water (hydrogen bonds with it)

Amino acids are bound together by ____bonds in proteins.

Water moving up into a paper towel is attributable to

Many mammals supply energy to their young in the form of

Why are covalent bonds used instead of ionic bonds to build organic compounds?

The pH of cells must be kept close to

Nonpolar molecules are

Atoms that bear a positive or negative charger are called

Fats, oils, and steroids are all

The characteristic way atoms of an element react is mostly related to the

Elements (atoms) with the outermost shell of electrons full, are said to be

__ chemical reactions take complex molecules and break them into simpler parts

The simplest type of matter with unique chemical properties

The mass number of an atom is

______ is used structurally in the cell wall of plant, but cant be digested by humans.

Denaturing of proteins is always a reversible process

The nucleus of an atom is composed of

Nonpolar compounds are said to be ____ because they shrink away from contact with water

Which property of water protects organisms from rapid temperature changes?

Fatty acids that contain the maximum number of hydrogen atoms possible are said to be

When electrons are transferred, atoms are electronically attracted to each other forming __bond

Which statement is incorrect about proteins?

The subatomic particle of an atom that carries no charge is

RNA and DNA differ structurally in that

Anything that occupies space and has mass

In DNA, there is base paring so that adenine bonds to ___ and cytosine bonds to guanine

In a Redox reaction ___ is passed from the oxidized to reduced molecule to transfer energy

Which is one of the six most common elements in living organisms?

A conjugated molecule is a(n)

Which statement best describes a solution with a neutral pH

One of the most common bodily fluids outside the neutral pH range is

There are approx. ____ different chemical elements used by living organisms.

Which polymer serves as the information storage molecule for cells?

Which statement is true about electron configurations

The polysaccharide stored in plant cells that is used to store glucose is

Atom with four electrons available for covalent bonding and is used to make orgainic molecules

To dissolve a lipid in water requires the use of a ______

They type of bond that forms between two atoms when electrons are shared

Cells contain chemicals substances called __ that minimize changes in pH

Which of the following is the main component of cell membranes?

The central dogma of molecular biology (flow of information in a cell) is

Which statement is not true regarding the properties of water?

A solution with a pH of 6 is

What type of bonds holds the 'rungs of the ladder' together in DNA?

A solution with a pH of 4 has __ the concentration of H+ compared to a solution with a pH of 5

_______ chemical reactions can proceed from reactants to products or products to reactants

Hydrogen bonding leading to alpha helices and beta pleats is which level of protein structure

____ is the collective term used for the sum of all catabolic and anabolic reactions in a cell

The precursor for all other steroids is