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Human Bio 156- Exam 1 Questions with Verified Answers
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Human Bio 156- Exam 1 Questions with Verified Answers
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Human Bio 156- Exam 1 Questions withVerified Answers
Which of the following terms is least like that others?
a. monosaccharide
b. phospholipid
c. fat
d. steroid - Answer -monosaccharide
Facilitated diffusion and active transport both use this type of molecule to move a
substance across the membrane:
a. phospholipids
b. cholesterol
c. proteins
d. carbohydrates - Answer -proteins
Which of the following subatomic particles has the smallest mass?
a. proton
b. electron
c. neutron
d. all of the choices are of equal mass - Answer -electron
The nucleus of an atom is composed of:
a. protons
b. neutrons
c. electrons
d. protons and neutrons
e. all of the choices are correct - Answer -protons and neutrons
The atomic number of an atom always indicates the number of:
a. protons
b. electrons - Answer -protons
Which of the following sub-atomic particles is useful in diagnosing and treating tumors
of the thyroid?
a. protons
b. neutrons
, c. electrons - Answer -neutrons
Isotopes of an element differ from each other in:
a. atomic number
b. number of neutrons - Answer -number of neutrons
Which type of bond is formed when two atoms share electrons?
a. ionic bonds
b. covalent bonds
c. hydrogen bonds
d. peptide bonds - Answer -covalent bonds
If the atomic number of an element of 15, then how many electrons are in the outermost
shell of the atom?
a. 2
b. 7
c. 13
d. 5 - Answer -5
The positive ion that results from an ionic bond:
a. gains electrons
b. loses electrons - Answer -loses electrons
In water, hydrogen bonding occurs between the hydrogen atom in one molecule and:
a. an oxygen atom in the same molecule
b. an oxygen atom in a different molecule
c. a hydrogen atom in the same molecule
d. a hydrogen atom in a different molecule - Answer -an oxygen atom in a different
molecule
The higher the pH:
a. the greater the hydrogen ion concentration
b. the more basic/alkaline the solution
c. the lower the pH number
d. all of choices are correct - Answer -the more basic/alkaline the solution
The addition of water that breaks larger molecules into smaller ones requires a process
called:
a. hydrolysis
b. dehydration reaction
c. monomerization
d. condensation - Answer -hydrolysis
Carbohydrates:
a. are formed from amino acids
b. store energy
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