Bio 121 Final Exam
_____is a regulatory mechanism in which the end product of a
metabolic pathway inhibits an enzyme that catalyzes an early
step in the pathway Correct Answers Feedback inhibition
3H2 + N2 <--> 2NH3 Correct Answers Ammonia is being
formed and decomposed simultaneously
A controlled experiment__ Correct Answers includes at least 2
groups, one of which does not receive the experimental
treatment
A human cell containing 22 autosomes and a Y chromosome is
Correct Answers a sperm
A neutral atom has 2,8,8, in its first, second, and third energy
levels. This information___ Correct Answers does not tell us
about the atomic mass of the element.
A particular organism has 46 chromosomes in its karyotypes.
Which of the following statements is correct regarding this
organism? Correct Answers It produces gametes with 23
chromosomes
About 25 of the 92 elements are known to be essential to life.
Which of these 4 of these 25 elements make up approximately
96% of living matter? Correct Answers carbon, hydrogen,
nitrogen, oxygen
,According to the fluid mosaic model a membrane Correct
Answers is composed of a fluid bilayer of phospholipids with
embedded amphipathic proteins
According to the fluid mosaic model of cell membranes,
phospholipids _____. Correct Answers can move laterally
along the plane of the membrane
According to the fluid mosaic model of membrane structure,
proteins of the membrane are mostly Correct Answers
embedded in a lipid bilayer
An animal cell lacking carbohydrates on the external surface of
its plasma membrane would likely be impaired in which
function? Correct Answers cell-cell recognition
Approximately how many molecules of ATP are produced from
the complete oxidation of one molecule of glucose (C6H12O6)
in aerobic cellular respiration? Correct Answers 30-32
Assume that acid rain has lowered the pH of a particular lake to
pH 4.0. What is the hydroxyl ion concentration of this lake?
Correct Answers 1 x 10 ^-9 mol of hydroxide ions per liter of
lake water
At which phase of the cell cycle do centrioles begin to move
apart in animal cells? Correct Answers prophase
Atoms have no electric charge because they Correct Answers
have an equal number of electrons and protons
, Bonds between 2 atoms that are equally electronegative are?
Correct Answers nonpolar covalent bonds
Catabolism is to anabolism as ____ is to_____ Correct Answers
exergonic, endergonic
Certain types normally have several nuclei per cell. How could
such multinucleated cells be explained? Correct Answers The
cell underwent repeated mitosis, but cytokinesis did not occur
Compared with 31P, the radioactive isotope 32P has Correct
Answers one more neutron
Consider the following reaction at equilibrium. CO2 + H2O <---
> H2CO3. What would be the effect of adding additional H20?
Correct Answers it would drive the equilibrium dynamics to
the right
Eukaryotic chromosomes are composed of which of the
following macromolecules? Correct Answers DNA and
proteins
Exam 1 Content Correct Answers
Exam 2 Content Correct Answers
EXAM 3 CONTENT Correct Answers
Examination of a cell by transmission electron microscopy
reveals a high density of ribosomes in the cytoplasm. This
_____is a regulatory mechanism in which the end product of a
metabolic pathway inhibits an enzyme that catalyzes an early
step in the pathway Correct Answers Feedback inhibition
3H2 + N2 <--> 2NH3 Correct Answers Ammonia is being
formed and decomposed simultaneously
A controlled experiment__ Correct Answers includes at least 2
groups, one of which does not receive the experimental
treatment
A human cell containing 22 autosomes and a Y chromosome is
Correct Answers a sperm
A neutral atom has 2,8,8, in its first, second, and third energy
levels. This information___ Correct Answers does not tell us
about the atomic mass of the element.
A particular organism has 46 chromosomes in its karyotypes.
Which of the following statements is correct regarding this
organism? Correct Answers It produces gametes with 23
chromosomes
About 25 of the 92 elements are known to be essential to life.
Which of these 4 of these 25 elements make up approximately
96% of living matter? Correct Answers carbon, hydrogen,
nitrogen, oxygen
,According to the fluid mosaic model a membrane Correct
Answers is composed of a fluid bilayer of phospholipids with
embedded amphipathic proteins
According to the fluid mosaic model of cell membranes,
phospholipids _____. Correct Answers can move laterally
along the plane of the membrane
According to the fluid mosaic model of membrane structure,
proteins of the membrane are mostly Correct Answers
embedded in a lipid bilayer
An animal cell lacking carbohydrates on the external surface of
its plasma membrane would likely be impaired in which
function? Correct Answers cell-cell recognition
Approximately how many molecules of ATP are produced from
the complete oxidation of one molecule of glucose (C6H12O6)
in aerobic cellular respiration? Correct Answers 30-32
Assume that acid rain has lowered the pH of a particular lake to
pH 4.0. What is the hydroxyl ion concentration of this lake?
Correct Answers 1 x 10 ^-9 mol of hydroxide ions per liter of
lake water
At which phase of the cell cycle do centrioles begin to move
apart in animal cells? Correct Answers prophase
Atoms have no electric charge because they Correct Answers
have an equal number of electrons and protons
, Bonds between 2 atoms that are equally electronegative are?
Correct Answers nonpolar covalent bonds
Catabolism is to anabolism as ____ is to_____ Correct Answers
exergonic, endergonic
Certain types normally have several nuclei per cell. How could
such multinucleated cells be explained? Correct Answers The
cell underwent repeated mitosis, but cytokinesis did not occur
Compared with 31P, the radioactive isotope 32P has Correct
Answers one more neutron
Consider the following reaction at equilibrium. CO2 + H2O <---
> H2CO3. What would be the effect of adding additional H20?
Correct Answers it would drive the equilibrium dynamics to
the right
Eukaryotic chromosomes are composed of which of the
following macromolecules? Correct Answers DNA and
proteins
Exam 1 Content Correct Answers
Exam 2 Content Correct Answers
EXAM 3 CONTENT Correct Answers
Examination of a cell by transmission electron microscopy
reveals a high density of ribosomes in the cytoplasm. This
