CEOE Biological Sciences Questions AND Correct Answers
a countercurrent circulation in the legs of wading birds is particularly effective
in:
a. maintaining blood pressure
b. maintaining isotonicity
c. minimizing heat loss
d. maximizing sensory reception - ✔✔c. minimizing heat loss
a difference between ionic bonds and covalent bonds is that the formation of
ionic bonds involves the:
a. transfer of an electorn from one atom to another
b. sharing of an electron between two nonmetal elements
c. interaction of atoms with a similar electronegativity
d. attraction between delocalized electrons in a lattice - ✔✔a. transfer of an
electron from one atom to another
a geneticist would use a test cross in order to determine whether:
a. a given organism could be the offspring from a certain mating
b. a certain phenotype is dominant or recessive
c. a given organism is homozygous or heterozygous for a trait
d. a certain phenotype can produce fertile offspring - ✔✔c. a given organism is
homozygous or heterozygous for a trait
a point mutation involving the insertion of a single nucleotide pair is usually
more damaging to the production of proteins than is a substitution. that is
because, unlike a substitution, an insertion always:
,a. disrupts the coding of a triplet by altering the triplet grouping and causing the
improper grouping of all downstream triplets
b. stops the production of the growing polypeptide chain before it is fully
formed, creating an entirely nonfunctional protein
c. interrupts the formation of protein by introducing out-of-sequence amino
acids into the developing chain of polypeptides
d. prevents the formation of peptide bonds between amino acids that
constitute the building blocks of protiens - ✔✔a. disrupts the coding of a triplet
by altering the triplet grouping and causing the improper grouping of all
downstream triplets
a population of frogs undergoes a dramatic increase during an unseasonably hot
summer. a scientists carefully designs and performs an experiment to test the
hypothesis that the higher than average water temperatures that have been
observed are causing female frogs to lay more eggs than usual. if the data does
not support the hypothesis what is the most appropriate NEXT step for the
scientists to take?
a. considering the factors that might affect population size and formulating a
new hypothesis
b. using the different experimental design with better controls
c. concluding that water temperature is not a factor in the increased population
numbers
d. asking a colleague in a different laboratory to replicate the experiment -
✔✔a. considering the factors that might affect population size and formulating
a new hypothesis
a researcher studying lead growing. in a fish tank increased the light intensity
available to the algae for a period of five days. which of the following outcomes
is most likely to occur?
, a. decreased cellular groth
b. increased absorption of carbon dioxide
c. decreased use of water molecules
d. increased production of carbohydrates - ✔✔d. increased production of
carbohydrates
a science teacher builds a compost pile out of fried sheep manure, shredded
leaves, grass clippings, kitchen waste, and water. each component is weighed
before it is placed in the pile and the piles volume is recorded. students
regularly turn and mix the pile and add water. after six weeks, the pile has
become compost and is reweighed and its volume calculated. the pile is shown
to have decreased significantly in both weight and volume.
the class activity described best demonstrated which of the following natural
phenomena ?
a. the importance of both carbon and nitrogen to the metabolism of bacteria
b. the action of denitrifying bacteria in returning nitrogen to the atmosphere
c. the formation of complex carbon and nitrogen compounds by bacterial action
d. the release of carbon as carbon dioxide during the process of bacterial
respiration - ✔✔d. the release of carbon as carbon dioxide during the process of
bacterial respiration
a species of moth, fuzzy leg (F) is dominant to smooth leg (f), and spotted
abdomen (S) is dominant to unspotted abdomen (s). a cross between two moths
produces offspring having a phenotypic ratio of 3 to 1 for each of the two traits.
one of the two parent moths have a genotype of FfSs. what was the genotype of
the other moth?
a. ffss
b. ffSs
a countercurrent circulation in the legs of wading birds is particularly effective
in:
a. maintaining blood pressure
b. maintaining isotonicity
c. minimizing heat loss
d. maximizing sensory reception - ✔✔c. minimizing heat loss
a difference between ionic bonds and covalent bonds is that the formation of
ionic bonds involves the:
a. transfer of an electorn from one atom to another
b. sharing of an electron between two nonmetal elements
c. interaction of atoms with a similar electronegativity
d. attraction between delocalized electrons in a lattice - ✔✔a. transfer of an
electron from one atom to another
a geneticist would use a test cross in order to determine whether:
a. a given organism could be the offspring from a certain mating
b. a certain phenotype is dominant or recessive
c. a given organism is homozygous or heterozygous for a trait
d. a certain phenotype can produce fertile offspring - ✔✔c. a given organism is
homozygous or heterozygous for a trait
a point mutation involving the insertion of a single nucleotide pair is usually
more damaging to the production of proteins than is a substitution. that is
because, unlike a substitution, an insertion always:
,a. disrupts the coding of a triplet by altering the triplet grouping and causing the
improper grouping of all downstream triplets
b. stops the production of the growing polypeptide chain before it is fully
formed, creating an entirely nonfunctional protein
c. interrupts the formation of protein by introducing out-of-sequence amino
acids into the developing chain of polypeptides
d. prevents the formation of peptide bonds between amino acids that
constitute the building blocks of protiens - ✔✔a. disrupts the coding of a triplet
by altering the triplet grouping and causing the improper grouping of all
downstream triplets
a population of frogs undergoes a dramatic increase during an unseasonably hot
summer. a scientists carefully designs and performs an experiment to test the
hypothesis that the higher than average water temperatures that have been
observed are causing female frogs to lay more eggs than usual. if the data does
not support the hypothesis what is the most appropriate NEXT step for the
scientists to take?
a. considering the factors that might affect population size and formulating a
new hypothesis
b. using the different experimental design with better controls
c. concluding that water temperature is not a factor in the increased population
numbers
d. asking a colleague in a different laboratory to replicate the experiment -
✔✔a. considering the factors that might affect population size and formulating
a new hypothesis
a researcher studying lead growing. in a fish tank increased the light intensity
available to the algae for a period of five days. which of the following outcomes
is most likely to occur?
, a. decreased cellular groth
b. increased absorption of carbon dioxide
c. decreased use of water molecules
d. increased production of carbohydrates - ✔✔d. increased production of
carbohydrates
a science teacher builds a compost pile out of fried sheep manure, shredded
leaves, grass clippings, kitchen waste, and water. each component is weighed
before it is placed in the pile and the piles volume is recorded. students
regularly turn and mix the pile and add water. after six weeks, the pile has
become compost and is reweighed and its volume calculated. the pile is shown
to have decreased significantly in both weight and volume.
the class activity described best demonstrated which of the following natural
phenomena ?
a. the importance of both carbon and nitrogen to the metabolism of bacteria
b. the action of denitrifying bacteria in returning nitrogen to the atmosphere
c. the formation of complex carbon and nitrogen compounds by bacterial action
d. the release of carbon as carbon dioxide during the process of bacterial
respiration - ✔✔d. the release of carbon as carbon dioxide during the process of
bacterial respiration
a species of moth, fuzzy leg (F) is dominant to smooth leg (f), and spotted
abdomen (S) is dominant to unspotted abdomen (s). a cross between two moths
produces offspring having a phenotypic ratio of 3 to 1 for each of the two traits.
one of the two parent moths have a genotype of FfSs. what was the genotype of
the other moth?
a. ffss
b. ffSs
