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