Vocab
One of the several forms of an element, each containing the same number of protons but a different number of neutrons
Isotope
These are found in the nucleus of atoms
protons and neutrons
What type of bond forms when 2 atoms share a pair of electrons?
Covalent bond
side groups
What holds the 2 helixes in DNA together
Hydrogen Bonding
An attractive force that holds the molecules of the same substance together
Cohesion
An atom has the same number of protons and what?
Electrons
The water's high heat capacity
A specific reactant an enzyme acts upon is called the what?
substrate
water fearing
hydrophobic
A lipid made from fatty acids that have no double bonds between carbon atoms
Saturated fat
The element sulfur is comprised of all atoms that have 16 protons. How many neutrons are in sulfur-34
18
Which of the following properties of water is not a result of hydrogen bonding?
a. lower density of ice compared to liquid water
b. ratio of hydrogen to oxygen in water molecules
c. ability to dissolve many substances
d. cohesion
This lowers the activation energy of a reaction
a dissolved substance
solute
The Energy needed to get reactions started
Activation energy
When an atom loses an electron, what happens?
It becomes a positively charged ion
A solution with a pH of 5 is
a. acidic
b. basic
c. neutral
d. strong
What determines the properties of a protein
type, number, and the order of amino acids linked together
The basic building blocks of proteins each containing a carboxyl group and an amino group
Amino acids
2 different molecules that have the same chemical formula
Isomers
How many total atoms are in 1 molecule of C22 H44 O
67
if the following molecule is a carbohydrate, what is the value of x?
C7 Hx O2
what determines the "morse code" of DNA
nitrogenous (or nucleotide) base
The process in which the normal shape of a protein is lost, usually due to heat
Denaturation