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