BIOL 101 QUIZ 8 COMPREHENSIVE QUIZ 2026
QUESTIONS WITH SOLUTIONS GRADED A+
◉ Which of the following types of cells lack a nucleus? Answer:
archaea
◉ Strong evidence in support of the common ancestry of all life
comes from Answer: the existence of a nearly universal genetic code
◉ Imagine there is a species-specific fishing regulation that mandate
that only adult fish of this species that are 75 cm or longer may be
kept; shorter fish must be released back into the water (alive). Based
on your knowledge of natural selection, you would predict that the
average length of the adult fish population will Answer: gradually
decline
◉ Which of the following is a requirement for a good scientific
hypothesis? Answer: It must lead to testable predictions
◉ Trace elements are those required by an organism in only minute
quantities. Which of the following is a trace element that is required
by humans and other vertebrates? Answer: Iodine
, ◉ Fluorine has an atomic number of 9 and a mass number of 19.
How many electrons are needed to complete the valence shell of a
fluorine atom? Answer: 1
◉ One difference between carbon-12(12/6 C) and carbon-14(14/6
C) is that carbon-14 has Answer: two more neutrons than carbon-12
◉ How many neutrons are present in the nucleus of a phosphorus-
32(^32P) atom? Answer: 17
◉ The nucleus of a nitrogen atom contains 7 neutrons and 7
protons. Which of the following is a correct statement concerning
nitrogen? Answer: The nitrogen atom has a mass number of 14 and
an atomic number of 7.
◉ A covalent bond is likely to be polar when Answer: one of the
atoms sharing electrons is more electronegative than the other
atom.
◉ What is the maximum number of covalent bonds an element with
atomic number 8 can make with hydrogen? Answer: 2
◉ A covalent bond is formed by Answer: sharing of a pair of
electrons between two atoms
QUESTIONS WITH SOLUTIONS GRADED A+
◉ Which of the following types of cells lack a nucleus? Answer:
archaea
◉ Strong evidence in support of the common ancestry of all life
comes from Answer: the existence of a nearly universal genetic code
◉ Imagine there is a species-specific fishing regulation that mandate
that only adult fish of this species that are 75 cm or longer may be
kept; shorter fish must be released back into the water (alive). Based
on your knowledge of natural selection, you would predict that the
average length of the adult fish population will Answer: gradually
decline
◉ Which of the following is a requirement for a good scientific
hypothesis? Answer: It must lead to testable predictions
◉ Trace elements are those required by an organism in only minute
quantities. Which of the following is a trace element that is required
by humans and other vertebrates? Answer: Iodine
, ◉ Fluorine has an atomic number of 9 and a mass number of 19.
How many electrons are needed to complete the valence shell of a
fluorine atom? Answer: 1
◉ One difference between carbon-12(12/6 C) and carbon-14(14/6
C) is that carbon-14 has Answer: two more neutrons than carbon-12
◉ How many neutrons are present in the nucleus of a phosphorus-
32(^32P) atom? Answer: 17
◉ The nucleus of a nitrogen atom contains 7 neutrons and 7
protons. Which of the following is a correct statement concerning
nitrogen? Answer: The nitrogen atom has a mass number of 14 and
an atomic number of 7.
◉ A covalent bond is likely to be polar when Answer: one of the
atoms sharing electrons is more electronegative than the other
atom.
◉ What is the maximum number of covalent bonds an element with
atomic number 8 can make with hydrogen? Answer: 2
◉ A covalent bond is formed by Answer: sharing of a pair of
electrons between two atoms
