BIO 112 EXAM 1 QUESTIONS AND
ANSWERS
A good hypothesis must:
a. be true
b. be theoretical
c. lead to a question
d. be false
e. be falsifiable - Correct Answers -be falsifiable
Phagocytosis is a type of _______ in which a cell engulfs another cell.
a. active transport.
b. passive transport
c. facilitated diffusion
d. exocytosis
e. endocytosis - Correct Answers -endocytosis
The cytoskeleton is composed of:
a. mircrofilaments, mitochondria, and intermediate filaments
b. microfilaments, intermediate filaments, and microtubules
c. microfilaments, microtubules, and lysosomes - Correct Answers -microfilaments,
intermediate filaments, microtubules
Which of the following would you find in a plant cell but not in an animal cell?
a. lysosome
b. ionic charge
c. mitochondrion
d. central vacuole - Correct Answers -central vacuole
Isotopes are atoms of the same element that differ in their:
a. number of electrons
b. number of protons
c. ionic charge
d. number of neutrons - Correct Answers -number of neutrons
Two hydrogen atoms ( atomic # 1) form a covalent bond. Which of the following is true?
a. both hydrogen atoms now have two protons in their outer shell.
b. both hydrogen atoms now have two electrons in their outer shell.
, c. each hydrogen atom still hasten electron in its outer shell - Correct Answers -both
hydrogen atoms now have two electrons in their outer shell
Unsaturated fatty acids:
a. have long been linked with heart disease.
b. have one or more double bonds between the carbons
c. are usually found in animal fats
d. contain the max number of hydrogen atoms possible - Correct Answers -have one or
ore double bonds between the carbons
Which of the following is an example of how living things assimilate energy?
a. producing a new generation of offspring
b. solving a mathematics problem
c. eating a meal
d. blinking at a bright light - Correct Answers -eating a meal
Which of the following is true of chemical bonds?
A. electrons are always shared.
b. chemical bonds cannot occur between two identical atoms
c. atoms can achieve a higher energy state and less stability by forming bonds
d. electrons can be shared or completely transferred. - Correct Answers -electrons can
be shared or completely transferred
All the atoms of the same element will have the same:
a. mass
b. number of protons and neutrons
c. number of protons
d. number of neutrons. - Correct Answers -number of protons
An atom becomes an ion when:
a. it forms a covalent bond
b. it gains or loses neutrons
c. hydrogen ions are shared
d. it gains or loses electrons
e. it gains or loses protons - Correct Answers -it gains or loses electrons
Diffusing molecules move ________ until they are ________.
a. up their concentration gradient; unevenly distributed
b. down their concentration gradient; unevenly distributed
c. through channels of active transport proteins; evenly distributed.
d. up their concentration gradient; evenly distributed
e. down their concentration gradient; evenly distributed - Correct Answers -down their
concentration gradient; evenly distributed
Which of the following expresses an accurate difference between prokaryotic and
eukaryotic cells?
ANSWERS
A good hypothesis must:
a. be true
b. be theoretical
c. lead to a question
d. be false
e. be falsifiable - Correct Answers -be falsifiable
Phagocytosis is a type of _______ in which a cell engulfs another cell.
a. active transport.
b. passive transport
c. facilitated diffusion
d. exocytosis
e. endocytosis - Correct Answers -endocytosis
The cytoskeleton is composed of:
a. mircrofilaments, mitochondria, and intermediate filaments
b. microfilaments, intermediate filaments, and microtubules
c. microfilaments, microtubules, and lysosomes - Correct Answers -microfilaments,
intermediate filaments, microtubules
Which of the following would you find in a plant cell but not in an animal cell?
a. lysosome
b. ionic charge
c. mitochondrion
d. central vacuole - Correct Answers -central vacuole
Isotopes are atoms of the same element that differ in their:
a. number of electrons
b. number of protons
c. ionic charge
d. number of neutrons - Correct Answers -number of neutrons
Two hydrogen atoms ( atomic # 1) form a covalent bond. Which of the following is true?
a. both hydrogen atoms now have two protons in their outer shell.
b. both hydrogen atoms now have two electrons in their outer shell.
, c. each hydrogen atom still hasten electron in its outer shell - Correct Answers -both
hydrogen atoms now have two electrons in their outer shell
Unsaturated fatty acids:
a. have long been linked with heart disease.
b. have one or more double bonds between the carbons
c. are usually found in animal fats
d. contain the max number of hydrogen atoms possible - Correct Answers -have one or
ore double bonds between the carbons
Which of the following is an example of how living things assimilate energy?
a. producing a new generation of offspring
b. solving a mathematics problem
c. eating a meal
d. blinking at a bright light - Correct Answers -eating a meal
Which of the following is true of chemical bonds?
A. electrons are always shared.
b. chemical bonds cannot occur between two identical atoms
c. atoms can achieve a higher energy state and less stability by forming bonds
d. electrons can be shared or completely transferred. - Correct Answers -electrons can
be shared or completely transferred
All the atoms of the same element will have the same:
a. mass
b. number of protons and neutrons
c. number of protons
d. number of neutrons. - Correct Answers -number of protons
An atom becomes an ion when:
a. it forms a covalent bond
b. it gains or loses neutrons
c. hydrogen ions are shared
d. it gains or loses electrons
e. it gains or loses protons - Correct Answers -it gains or loses electrons
Diffusing molecules move ________ until they are ________.
a. up their concentration gradient; unevenly distributed
b. down their concentration gradient; unevenly distributed
c. through channels of active transport proteins; evenly distributed.
d. up their concentration gradient; evenly distributed
e. down their concentration gradient; evenly distributed - Correct Answers -down their
concentration gradient; evenly distributed
Which of the following expresses an accurate difference between prokaryotic and
eukaryotic cells?
