Chapter 2 Quiz (A&P1 Lecture)
Hydrogen bonds are strong attractions between nonpolar covalent molecules.
false
Like the carbohydrates, lipids have twice the hydrogen atoms as carbon and oxygen atoms in their molecular structures.
false
A solution containing equal number of hydrogen ions and hydroxide ions is:
neutral
In a molecule of oxygen gas, the atoms of oxygen share electrons equally with one another. This statement best describes a(n):
nonpolar covalent bond
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
How many electrons are in the outermost shell of an atom with 15 electrons?
5
What makes RNA a unique nucleic acid?
RNA contains a nitrogenous base known as uracil
What chemical binds free hydrogen ions in solution?
base
The transfer of an electron from sodium to chlorine is an example of:
chemical energy
A long-lasting high fever is a concern for denaturation of:
enzymes
Select the simplest sugar:
glucose
Atoms that satisfy the octet rule are said to be:
inert
The formation of a cation and an anion is indicative of a(n):
ionic bond
An atom of iron has an atomic number of 26. Which of the following is TRUE?
iron has 26 protons
What varies from one isotope of an element to another isotope of the same element?
mass number
Two or more atoms of the same element that are chemically combined are known as:
molecules
Hydrolysis of a polymer will produce:
monomers
Which of the following represents the strongest acidic solution?
pH 1
What type of polar covalent bond links amino acids?
peptide bond
Which of the following fatty acid chains has the most double bonds?
polyunsaturated fatty acid
In the following chemical reaction, what is NaCl + NaOH + HCl → NaCl + H2O
product
Which two organ systems work to correct pH imbalances in the body?
respiratory and urinary
The alpha-helix and beta-pleated sheet are characteristic of:
secondary protein structure
The strongest type of chemical bond is a covalent bond because electrons are shared between two or more nonmetals.
true
