science ch 2 final like exam of test on fri

Enzymes speed up chemicalreactions that take place in cells.

Large, complex molecules

organic compounds that contain both amino and carboxylic acid functional groups.

A water molecule is polar

read the image

The nucleobase of a nucleotide involved in base pairing

represent the structural composition of all living organisms made up of mainley

Basic, or alkaline, solu-tions contain lower concentrations of H+ ions thanpure water and have pH values above 7.

The attraction between different kinds of molecules

each of more than one hundred substances that cannot be chemically interconverted or broken down into simpler substances

polymeric molecule essential in various biological roles in coding, decoding, regulation and expression of genes.

Chemical reactions always involve changes in thechemical bonds that join atoms in compounds.

The dissolving agent of a solution

Some proteins control the rate o reactions and regulate cell processes Some are used to form bones and muscle substances

what is in the center of the atom

macromolecule that carries hereditary information in many organisms.

atom

A homogeneous, liquid mixture of two or more substances.

what is another word for Enzymes

A component of a solution:

distance-dependent forces between atoms and molecules not associated with covalent or ionic chemical bonds.

what are the strongest bonds in nature

what is a charged particle

Livingthings use carbohydrates as their main source of energy Plants and some animals also

what is a proton donor

surface on which an organism (such as a plant, fungus, or animal) lives.

where is an electron

branch of biology that’s focused on looking at the molecular makeup of biological activity.

Tool for measuring acids and bases

what is Most basic form of carbohydrates

group of biological molecules that include fats, oils and some steroids.

Polynucleotides also known as

starting material for a chemical reaction.

organic substances that maintain a constant pH over a given range by neutralizing the effects of hydrogen ions.

how many positive and negitive charges does H20 have

what are Biological catalysts

atoms having the same atomic number but different atomic weights.

Lipids can be used to store energy.Some lipids are important parts of biological membranesand waterproof coverings.

property of a liquid to stay together.

what happens 2 reactant molecules and molecules to form a new substance is called a

covalent bonds

Acidic solutions contain higher concentrations of H+ ions than purewater and have pH values below 7.

a unique substance that consists of two or more elements combined in fixed proportions.

what is a polar covalent bond