Bio 140 Practice Test Questions with Verified
Correct Answers
The development of the cell theory was based upon Hooke's microscopic observations.
Which of the following statements on the cell theory is false?
A) all cells come from preexisting cells
B) Most of the chemical reactions of life occur within the cell
C) All cells are similar in chemical composition
D) cells are formed by the self-assembly of nonliving materials
E) complete sets of genetic information are replicated and passed on during cell division
D
Which of the following statements regarding eukaryotes is false?
A) Early eukaryotes evolved from the first predators
B) Some eukaryotic cells can perform photosynthesis
C) Eukaryotic cells contain specialized, membrane-closed compartments
D) Eukaryotic Cells contain their genetic material inside a nucleus
E) all eukaryotic organisms are multicellular
E
Life on land depended most on the evolution of photosynthesis because
The oxygen evolved during photosynthesis was needed for aerobic metabolism
The partial charge separation in H20 results from
the electrons greater attraction to the oxygen atom, oxygens higher electronegativity, a denser
electron cloud near the oxygen atom
Hydrocarbons are _______ and ________, whereas salts are __________ and ________
, nonpolar and hydrophobic.
Polar and hydrophillic
A mutation may create a nonfunctional protein when an original/ normal amino acid is
replaced by a different one. Based on your understanding of amino acids, such a change
might be
aspartate to proline
The side chain of arginine is charged. Water-soluble proteins often contain Arg. Where
would the Asp side chain most likely be found in a protein dissolved in water?
On the exterior of the protein in contact with water
Scientists have created synthetic nucleotide like molecules in the laboratory that are
able to replicate. This seems to support which hypothesis of chemical evolution?q
an RNA first hypothesis
This table gives the results of assays of percentages of bases from nucleic acids isolated
from different sources. The nucleic acids from source 3 is _____ (DNA or RNA) and
_____ (double or single stranded)
DNA; single stranded
The tree of life is determined using molecular similarites such as those found in ______,
and indicates which three domains which include bacteria, eukarya and _____
rRNA, archae
Changing a single amino acid in a protein consisting of 325 amino acids would
always alter the primary structure of the protein, sometimes alter the tertiary structure of a
protein, and sometimes affect its biological activity.
Correct Answers
The development of the cell theory was based upon Hooke's microscopic observations.
Which of the following statements on the cell theory is false?
A) all cells come from preexisting cells
B) Most of the chemical reactions of life occur within the cell
C) All cells are similar in chemical composition
D) cells are formed by the self-assembly of nonliving materials
E) complete sets of genetic information are replicated and passed on during cell division
D
Which of the following statements regarding eukaryotes is false?
A) Early eukaryotes evolved from the first predators
B) Some eukaryotic cells can perform photosynthesis
C) Eukaryotic cells contain specialized, membrane-closed compartments
D) Eukaryotic Cells contain their genetic material inside a nucleus
E) all eukaryotic organisms are multicellular
E
Life on land depended most on the evolution of photosynthesis because
The oxygen evolved during photosynthesis was needed for aerobic metabolism
The partial charge separation in H20 results from
the electrons greater attraction to the oxygen atom, oxygens higher electronegativity, a denser
electron cloud near the oxygen atom
Hydrocarbons are _______ and ________, whereas salts are __________ and ________
, nonpolar and hydrophobic.
Polar and hydrophillic
A mutation may create a nonfunctional protein when an original/ normal amino acid is
replaced by a different one. Based on your understanding of amino acids, such a change
might be
aspartate to proline
The side chain of arginine is charged. Water-soluble proteins often contain Arg. Where
would the Asp side chain most likely be found in a protein dissolved in water?
On the exterior of the protein in contact with water
Scientists have created synthetic nucleotide like molecules in the laboratory that are
able to replicate. This seems to support which hypothesis of chemical evolution?q
an RNA first hypothesis
This table gives the results of assays of percentages of bases from nucleic acids isolated
from different sources. The nucleic acids from source 3 is _____ (DNA or RNA) and
_____ (double or single stranded)
DNA; single stranded
The tree of life is determined using molecular similarites such as those found in ______,
and indicates which three domains which include bacteria, eukarya and _____
rRNA, archae
Changing a single amino acid in a protein consisting of 325 amino acids would
always alter the primary structure of the protein, sometimes alter the tertiary structure of a
protein, and sometimes affect its biological activity.
