AP Anatomy & physiology chapter 2 test
Chemical properties are determined primarily by neutrons.
false
What is the building block of a lipid?
fatty acid
A nucleotide is made up of a
five-carbon sugar, a nitrogenous base, and a phosphate group
The monomer of the carbohydrates is the:
monosaccharide
The four most common elements, comprising 96% of the body's mass, are:
oxygen, nitrogen, hydrogen, carbon
Glucose and fructose are joined through dehydration synthesis to produce:
sucrose
An acid with a pH of 6 has ________ hydrogen ions than pure water.
10-fold more
The numbers listed represent the number of electrons in the first, second, and third energy levels, respectively. On this basis, which of the following is an unstable or reactive atom?
2,8,1
Select the most correct statement regarding nucleic acids.
dna is a long, double-stranded molecule made up of A, T, G, and C bases.
Which subatomic particle carries a negative charge?
electron
Which of the following increases the rate of a reaction?
increased reactant concentration
Hydrogen bonds may occur between:
polar molecules
Starch is a ________.
polysaccharide
What structural level is represented by the sequence of amino acids in a polypeptide chain?
primary structure
What group makes each amino acid unique?
r group
The alpha-helix and beta-pleated sheet are characteristic of:
secondary protein structure
An anabolic chemical reaction in which bonds are created is usually associated with ________.
the utilization of energy
Buffers resist abrupt and large changes in the pH of body fluids by releasing or binding ions.
true
The pH of body fluids must remain fairly constant for the body to maintain homeostasis.
true
In general, the lipids that we refer to as oils at room temperature have ________.
unsaturated fatty acids