Biology Praxis 5236
Which of the following terms indicates the ecological role that an organism plays in a
community? - answerNiche
Which of the following characteristics distinguishes members of the domain Eukarya
from members of the domains Archaea and Bacteria? - answer The presence of a
nuclear envelope
Valine is typically classified as a hydrophobic amino acid because a valine molecule has
which of the following types of side chains? - answer Nonpolar
A teacher asks students to describe how the data collected in an experiment are
typically used as evidence. Which of the following responses is the most accurate? -
answer"The data are used to support or reject a hypothesis."
Which of the following biomes is characterized by long winters and short summers,
snow as the predominant form of precipitation, soil that is acidic and poor in nutrients,
and wooded areas made up mostly of evergreen trees with needlelike leaves? -
answerBoreal forest
One strand of a certain segment of DNA has the following nucleotide sequence.
5 prime, A G A T G T C C A G T A, 3 prime5′⎯AGATGTCCAGTA⎯3′5′-
AGATGTCCAGTA-3′
The complementary strand in the same segment of DNA most likely has which of the
following nucleotide sequences? - answer3′⎯TCTACAGGTCAT⎯5′
The overall process of aerobic cellular respiration is best described as the oxidation of
glucose to produce carbon dioxide and the reduction of oxygen to produce which of the
following? - answerWater
A student uses stationary fans to investigate the effect of wind on water loss by plants.
The student divides the plants into three treatment groups and places each group in
front of a fan. The student sets the fan for each group to one of three different levels:
low, medium, or high. After 24 hours, the student determines the amount of water that
was lost by each plant. To create a bar graph of the results, the student should make
the height of each bar represent which of the following? - answerThe average water
loss for each treatment group
Interphase is the part of the cell cycle that includes which of the following? -
answerReplication of DNA
,A model of secondary succession typically includes which of the following? -
answerChanges in species composition over time
Which TWO of the following are typically present in a bacterial cell but not in a virus? -
answerRibosomes
DNA replication machinery
Wind turbines are used for which of the following activities? - answerGenerating
electricity without burning fossil fuels
The nucleotides of a single strand of DNA are linked together by which of the following?
- answerPhosphodiester bonds
Which of the following pathways is common to both fermentation and aerobic cellular
respiration? - answerGlycolysis
In a germinating seedling, the root grows downward into the soil. Which of the following
correctly explains this phenomenon? - answerThe root exhibits positive gravitropism.
Which of the following best describes the role of transpiration in the water cycle? -
answerIt moves water from the soil to the atmosphere.
In which of the following cell types is a mutation most likely to have an impact on the
gene pool of a population? - answerSperm
Which of the following actions will best help maintain the diversity and abundance of
organisms in a terrestrial ecosystem? - answerPreventing habitat destruction
A population of a certain animal species is found in a protected wildlife preserve. Which
of the following poses the greatest threat to the long-term survival of the population? -
answerA decrease in the genetic diversity of the population
Which of the following describes the primary function of bone marrow in humans? -
answerIt is the source of new blood cells.
Which of the following is the best example of habitat fragmentation? - answerBuilding a
highway through a forest
Ether can be used to anesthetize fruit flies. The flies are typically anesthetized in an
etherizer, a small chamber that contains an absorbent material onto which a few drops
of ether are placed before the flies are introduced. Ether is volatile and highly
flammable. In which of the following locations should the ether be added to the
etherizer? - answerIn a fume hood, where the ether fumes are drawn to the outside of
the building through an exhaust system
, A diploid organism has the genotype uppercase A, lowercase a, uppercase B,
lowercase b, uppercase C, lowercase cAaBbCc in regard to three unlinked genetic loci.
A normal gamete produced by the organism could have which of the following
genotypes? - answerAbC
Which of the following statements best explains how insulin helps regulate blood
glucose levels in a healthy individual? - answerIt stimulates the uptake of glucose by
cells of the body.
The human population on Earth grew from an estimated one billion individuals to over
seven billion individuals over two hundred years. Based on the information presented,
which of the following was most likely true about the human population? - answerThe
growth rate was exponential.
A teacher is preparing a lesson to help students distinguish between scientific theories,
laws, and hypotheses. The teacher will provide several examples of each. Which TWO
of the following statements best illustrate scientific theories? - answerEvolutionary
adaptations arise by natural selection.
The number of species on an island is determined by an equilibrium between the rates
of immigration and extinction.
Which of the following statements correctly describes a step in the processing of a
newly synthesized messenger RNA molecule in a eukaryotic cell? - answerA poly-A tail
is added to one end of the molecule.
A certain protein hormone stimulates changes in gene expression in the liver cells of a
mouse but not in the kidney cells of the same mouse. Which of the following types of
molecules are most likely present in the liver cells but not in the kidney cells? -
answerSpecific cell surface receptors
Which of the following terms describes the collective interaction of turtles, insects, frogs,
birds, and water plants that live in and around the same pond? - answerEcosystem
Which of the following best explains why the roots of a garlic bulb must be completely
removed before the bulb is imported into the United States? - answerThe bulb is less
likely to carry foreign root pathogens.
Which of the following theories is supported by the observations that mitochondria are
enclosed by a double membrane and have their own genomes? - answerEndosymbiotic
theory
In fungi, the digestion of relatively large food molecules typically begins in which of the
following locations? - answerIn the extracellular environment
Which of the following terms indicates the ecological role that an organism plays in a
community? - answerNiche
Which of the following characteristics distinguishes members of the domain Eukarya
from members of the domains Archaea and Bacteria? - answer The presence of a
nuclear envelope
Valine is typically classified as a hydrophobic amino acid because a valine molecule has
which of the following types of side chains? - answer Nonpolar
A teacher asks students to describe how the data collected in an experiment are
typically used as evidence. Which of the following responses is the most accurate? -
answer"The data are used to support or reject a hypothesis."
Which of the following biomes is characterized by long winters and short summers,
snow as the predominant form of precipitation, soil that is acidic and poor in nutrients,
and wooded areas made up mostly of evergreen trees with needlelike leaves? -
answerBoreal forest
One strand of a certain segment of DNA has the following nucleotide sequence.
5 prime, A G A T G T C C A G T A, 3 prime5′⎯AGATGTCCAGTA⎯3′5′-
AGATGTCCAGTA-3′
The complementary strand in the same segment of DNA most likely has which of the
following nucleotide sequences? - answer3′⎯TCTACAGGTCAT⎯5′
The overall process of aerobic cellular respiration is best described as the oxidation of
glucose to produce carbon dioxide and the reduction of oxygen to produce which of the
following? - answerWater
A student uses stationary fans to investigate the effect of wind on water loss by plants.
The student divides the plants into three treatment groups and places each group in
front of a fan. The student sets the fan for each group to one of three different levels:
low, medium, or high. After 24 hours, the student determines the amount of water that
was lost by each plant. To create a bar graph of the results, the student should make
the height of each bar represent which of the following? - answerThe average water
loss for each treatment group
Interphase is the part of the cell cycle that includes which of the following? -
answerReplication of DNA
,A model of secondary succession typically includes which of the following? -
answerChanges in species composition over time
Which TWO of the following are typically present in a bacterial cell but not in a virus? -
answerRibosomes
DNA replication machinery
Wind turbines are used for which of the following activities? - answerGenerating
electricity without burning fossil fuels
The nucleotides of a single strand of DNA are linked together by which of the following?
- answerPhosphodiester bonds
Which of the following pathways is common to both fermentation and aerobic cellular
respiration? - answerGlycolysis
In a germinating seedling, the root grows downward into the soil. Which of the following
correctly explains this phenomenon? - answerThe root exhibits positive gravitropism.
Which of the following best describes the role of transpiration in the water cycle? -
answerIt moves water from the soil to the atmosphere.
In which of the following cell types is a mutation most likely to have an impact on the
gene pool of a population? - answerSperm
Which of the following actions will best help maintain the diversity and abundance of
organisms in a terrestrial ecosystem? - answerPreventing habitat destruction
A population of a certain animal species is found in a protected wildlife preserve. Which
of the following poses the greatest threat to the long-term survival of the population? -
answerA decrease in the genetic diversity of the population
Which of the following describes the primary function of bone marrow in humans? -
answerIt is the source of new blood cells.
Which of the following is the best example of habitat fragmentation? - answerBuilding a
highway through a forest
Ether can be used to anesthetize fruit flies. The flies are typically anesthetized in an
etherizer, a small chamber that contains an absorbent material onto which a few drops
of ether are placed before the flies are introduced. Ether is volatile and highly
flammable. In which of the following locations should the ether be added to the
etherizer? - answerIn a fume hood, where the ether fumes are drawn to the outside of
the building through an exhaust system
, A diploid organism has the genotype uppercase A, lowercase a, uppercase B,
lowercase b, uppercase C, lowercase cAaBbCc in regard to three unlinked genetic loci.
A normal gamete produced by the organism could have which of the following
genotypes? - answerAbC
Which of the following statements best explains how insulin helps regulate blood
glucose levels in a healthy individual? - answerIt stimulates the uptake of glucose by
cells of the body.
The human population on Earth grew from an estimated one billion individuals to over
seven billion individuals over two hundred years. Based on the information presented,
which of the following was most likely true about the human population? - answerThe
growth rate was exponential.
A teacher is preparing a lesson to help students distinguish between scientific theories,
laws, and hypotheses. The teacher will provide several examples of each. Which TWO
of the following statements best illustrate scientific theories? - answerEvolutionary
adaptations arise by natural selection.
The number of species on an island is determined by an equilibrium between the rates
of immigration and extinction.
Which of the following statements correctly describes a step in the processing of a
newly synthesized messenger RNA molecule in a eukaryotic cell? - answerA poly-A tail
is added to one end of the molecule.
A certain protein hormone stimulates changes in gene expression in the liver cells of a
mouse but not in the kidney cells of the same mouse. Which of the following types of
molecules are most likely present in the liver cells but not in the kidney cells? -
answerSpecific cell surface receptors
Which of the following terms describes the collective interaction of turtles, insects, frogs,
birds, and water plants that live in and around the same pond? - answerEcosystem
Which of the following best explains why the roots of a garlic bulb must be completely
removed before the bulb is imported into the United States? - answerThe bulb is less
likely to carry foreign root pathogens.
Which of the following theories is supported by the observations that mitochondria are
enclosed by a double membrane and have their own genomes? - answerEndosymbiotic
theory
In fungi, the digestion of relatively large food molecules typically begins in which of the
following locations? - answerIn the extracellular environment
