Biol 1441 Final Exam | Latest study set |
Questions and verified Answers
The element hydrogen consists of - ANSW-one electron and one proton
The element silicon has an atomic number of 14. Based on this information, which of the following
statements about an atom of silicon is Correct? - ANSW-it has 14 protons in its nucleus
Two atoms share a pair of electrons equally. This means that they are joined by.... - ANSW-a nonpolar
covalent bond
Which of the following is TRUE about a reaction that is at chemical equilibrium? - ANSW-Reactions are
still occurring, but rates of reactions in both directions are equal
In liquid and frozen water, many or all molecules are joined by - ANSW-hydrogen bonds between
positively charged hydrogens of one molecules and negatively charged oxygens of others
Cell membranes... - ANSW-are selectively permable
a calorie is - ANSW-the amount of heat required to change the temperature of one gram of water by one
degree celsius
Water can exist as a solid , liquid or gas and is the most abundant organic compound in living organisms -
ANSW-FALSE
which of the following would be least likely to dissolve in water? - ANSW-a large molecule made up of
entirely of carbon and hydrogen
which of the following elements make up the greatest part of the weight of a human? - ANSW-oxygen
a hypothetical substance consists of sulfur, hydrogen, phosphorus,oxygen, nitrogen,copper, and calcium.
It has a molecular weight of 672. When you dissolve 14 grams of the substance in 120 mililiters of pure
water, the result is a cloudy, bluish liquid with a slight green tinge. You measure the pH of 50 ml of this
solution and find that is 8.7 Based on this information the mystery compound is: - ANSW-an inorganic
base
Which of the following correctly describes the relationship between the hydrogen ion concentration of
solution A (pH=5) and solution B (pH=8)? - ANSW-a the hydrogen ion concentration of solutin A is 1000
times that of solution B
Given an aqueous solution at room temperature in which the cocentration of hydroxide ion is 10^8 M
the concentration of hydrogen ion will be - ANSW-10^6
How many electrons does carbon have in its outermost shell ? - ANSW-4
An enantiomer is a compound that has - ANSW-the same molecular formula as another compound , but
is structurally its mirror image
cholesterol - ANSW-maintains an appropriate level of fluidity in animal cell membranes
which of the following classes of macromolecules contains members that are not considered polymers? -
ANSW-lipids
Monomers - ANSW-are joined by dehydration reactions to form polymers
In the human body, a typical cell from the earlobe contains the same set of instructions for building an
entire organism as does a cell from the retina of the eye - ANSW-true
the major storage polysaccharide is plants is - ANSW-starch
the result of an anabolic reaction is that - ANSW-energy is stored in the products
, which of the following types of molecules exhibits amphipathic behavior in terms of its interacts with
water? - ANSW-phospholipid
the key difference between a saturated and unsaturated fat is that - ANSW-unsaturated fats have at least
one carbon-carbon double bond in their tails
The Golgi apparatus - ANSW-modifies and packages materials for secretions or delivery to other parts of
the cell
As a cell gets larger - ANSW-the surface volume ratio decreases
water is able to easily cross the membranes of many types of cells via channel proteins known as -
ANSW-aquaporins
which of the following statements is correct? 1 - ANSW-denaturation of a protein involves loss of
structure higher than the primary level
the cell wall of a plant cell consists mainly of starch , whereas the cell wall of an animal cell consists
mainly of glycogen - ANSW-FALSE
Mitochonria - ANSW-Are derived from a symbiotic relationship between prokaryotic and eukaryotic cells
The inside of cell usually has a ____ charge compared to the fluid outside it - ANSW-negative
Which of the statements is correct? - ANSW-information for making specific proteins is encoded in DNA
and this information is transmitted via RNA to the protein-making machinery of the cell
in the DNA molecule... - ANSW-Two strands are held together by hydrogen bonds between the As of one
strand and he Ts of the other, and the Gs of one strand and the Cs of the other
If you placed an animal cell in a hypertonic solution, the likeliest result would be that - ANSW-the cell
loses water and shrivels up
which of the following is largest by weight? - ANSW-typical animal cell
Which of the following is not part of the endomembrane system of a cell? - ANSW-chlorplasts
assembly of the subunits of polypeptides into a polymer occurs at the - ANSW-ribosomes
photosynthesis is the process by which - ANSW-cells capture and store solar
osmosis involves - ANSW-passive diffusion of water across a semipermeable membrane
which of the following statements is correct? 2 - ANSW-organisms use 20 different amino acids to make
proteins
the tail that allows sperm cell to swim presents a - ANSW-flagellum
In photosynthesis, NADPH acts as: - ANSW-a reducing agent
which of the following statements is CORRECT? 3 - ANSW-photosynthesis is an anabolic process
which of the following defines a double-stranded molecules at the beginning of mitosis, still attached at
the centromere to an identical structure? - ANSW-chromatid
Enzymes - ANSW-lower the activation energy barrier of chemical reactions
In glycolysis a key rate-limiting steps is: - ANSW-a production of both G3P and DHAP by the reaction
catalyzed by aldolase
for a given enzyme - ANSW-the molecule remains unchanged after it has carried out its function
Which of the following statements is correct? 4 - ANSW-for almost all cells in the human body, the same
set of genes is present
the final electron acceptor in aerobic respiration is - ANSW-oxygen
Questions and verified Answers
The element hydrogen consists of - ANSW-one electron and one proton
The element silicon has an atomic number of 14. Based on this information, which of the following
statements about an atom of silicon is Correct? - ANSW-it has 14 protons in its nucleus
Two atoms share a pair of electrons equally. This means that they are joined by.... - ANSW-a nonpolar
covalent bond
Which of the following is TRUE about a reaction that is at chemical equilibrium? - ANSW-Reactions are
still occurring, but rates of reactions in both directions are equal
In liquid and frozen water, many or all molecules are joined by - ANSW-hydrogen bonds between
positively charged hydrogens of one molecules and negatively charged oxygens of others
Cell membranes... - ANSW-are selectively permable
a calorie is - ANSW-the amount of heat required to change the temperature of one gram of water by one
degree celsius
Water can exist as a solid , liquid or gas and is the most abundant organic compound in living organisms -
ANSW-FALSE
which of the following would be least likely to dissolve in water? - ANSW-a large molecule made up of
entirely of carbon and hydrogen
which of the following elements make up the greatest part of the weight of a human? - ANSW-oxygen
a hypothetical substance consists of sulfur, hydrogen, phosphorus,oxygen, nitrogen,copper, and calcium.
It has a molecular weight of 672. When you dissolve 14 grams of the substance in 120 mililiters of pure
water, the result is a cloudy, bluish liquid with a slight green tinge. You measure the pH of 50 ml of this
solution and find that is 8.7 Based on this information the mystery compound is: - ANSW-an inorganic
base
Which of the following correctly describes the relationship between the hydrogen ion concentration of
solution A (pH=5) and solution B (pH=8)? - ANSW-a the hydrogen ion concentration of solutin A is 1000
times that of solution B
Given an aqueous solution at room temperature in which the cocentration of hydroxide ion is 10^8 M
the concentration of hydrogen ion will be - ANSW-10^6
How many electrons does carbon have in its outermost shell ? - ANSW-4
An enantiomer is a compound that has - ANSW-the same molecular formula as another compound , but
is structurally its mirror image
cholesterol - ANSW-maintains an appropriate level of fluidity in animal cell membranes
which of the following classes of macromolecules contains members that are not considered polymers? -
ANSW-lipids
Monomers - ANSW-are joined by dehydration reactions to form polymers
In the human body, a typical cell from the earlobe contains the same set of instructions for building an
entire organism as does a cell from the retina of the eye - ANSW-true
the major storage polysaccharide is plants is - ANSW-starch
the result of an anabolic reaction is that - ANSW-energy is stored in the products
, which of the following types of molecules exhibits amphipathic behavior in terms of its interacts with
water? - ANSW-phospholipid
the key difference between a saturated and unsaturated fat is that - ANSW-unsaturated fats have at least
one carbon-carbon double bond in their tails
The Golgi apparatus - ANSW-modifies and packages materials for secretions or delivery to other parts of
the cell
As a cell gets larger - ANSW-the surface volume ratio decreases
water is able to easily cross the membranes of many types of cells via channel proteins known as -
ANSW-aquaporins
which of the following statements is correct? 1 - ANSW-denaturation of a protein involves loss of
structure higher than the primary level
the cell wall of a plant cell consists mainly of starch , whereas the cell wall of an animal cell consists
mainly of glycogen - ANSW-FALSE
Mitochonria - ANSW-Are derived from a symbiotic relationship between prokaryotic and eukaryotic cells
The inside of cell usually has a ____ charge compared to the fluid outside it - ANSW-negative
Which of the statements is correct? - ANSW-information for making specific proteins is encoded in DNA
and this information is transmitted via RNA to the protein-making machinery of the cell
in the DNA molecule... - ANSW-Two strands are held together by hydrogen bonds between the As of one
strand and he Ts of the other, and the Gs of one strand and the Cs of the other
If you placed an animal cell in a hypertonic solution, the likeliest result would be that - ANSW-the cell
loses water and shrivels up
which of the following is largest by weight? - ANSW-typical animal cell
Which of the following is not part of the endomembrane system of a cell? - ANSW-chlorplasts
assembly of the subunits of polypeptides into a polymer occurs at the - ANSW-ribosomes
photosynthesis is the process by which - ANSW-cells capture and store solar
osmosis involves - ANSW-passive diffusion of water across a semipermeable membrane
which of the following statements is correct? 2 - ANSW-organisms use 20 different amino acids to make
proteins
the tail that allows sperm cell to swim presents a - ANSW-flagellum
In photosynthesis, NADPH acts as: - ANSW-a reducing agent
which of the following statements is CORRECT? 3 - ANSW-photosynthesis is an anabolic process
which of the following defines a double-stranded molecules at the beginning of mitosis, still attached at
the centromere to an identical structure? - ANSW-chromatid
Enzymes - ANSW-lower the activation energy barrier of chemical reactions
In glycolysis a key rate-limiting steps is: - ANSW-a production of both G3P and DHAP by the reaction
catalyzed by aldolase
for a given enzyme - ANSW-the molecule remains unchanged after it has carried out its function
Which of the following statements is correct? 4 - ANSW-for almost all cells in the human body, the same
set of genes is present
the final electron acceptor in aerobic respiration is - ANSW-oxygen
