Chapter 2 Quiz Questions

which type of functional protein serves as a catalyst in the bodies chemical reactions

enzymes

at a Ph of 7 the number of hydroxide ions will equal the number of

hydrogen ions

electrons

negative, held in orbits around the nucleus

atoms are electrically

neutral

Neutrons

neutral, held in the nucleus

full shell of 8 electrons is an

noble gas

number of protons =

number of electrons

atomic number

number of protons

glycogen and starch are examples of a specific category of carbohydrates called

polysaccharides

protons

positive, held in the nucleus

inactive or stored energy is called

potential energy

During a synthesis reaction, amino acids join to form ________.

proteins

What are the subatomic particles of an atom?

protons, neutrons, electrons

atomic mass number

sum of protons and neutrons

the Ph scale is based on

the concentration of hydrogen ions in a solution

the complementary base to adenine in a molecule of DNA is

thymine

if dehydration synthesis of glucose into a polymer called glycogen cannot occur, then blood sugar will increase

true

an atom with 13 electrons will have how many electrons in the valence shell

3

negative ion

anion, gains electrons

ions

atoms that have lost or gained electrons

decomposition reaction

break down to form two smaller molecules, releases energy

unsaturated fatty acid chains contain one or more ______ bonds between carbon atoms

double

positive ion

cation, loses electrons.

synthesis reaction

combine to form a larger molecule, energy is absorbed

rank carbon, hydrogen, nitrogen and oxygen from most common to least common

1. oxygen, carbon, hydrogen, nitrogen

polar molecules like water result when are shared

unequally between atoms