PRAXIS BIOLOGY CONTENT KNOWLEDGE 5236 UPDATED
QUESTIONS AND ANSWERS
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?
A."The data are used to confirm an existing belief."
B."The data are used as facts that cannot be questioned or criticized."
C."The data are used to support or reject a hypothesis."
D."The data are used to make a theory into a law." - CORRECT ANSWER✅✅✅C -"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?
A.Savanna
B.Boreal forest
C.Hot and dry desert
D.Tropical rain forest - CORRECT ANSWER✅✅✅B - Boreal Forest
One strand of a certain segment of DNA has the following nucleotide sequence.
5 - A G A T G T C C A G T A -3
The complementary strand in the same segment of DNA most likely has which of the following
nucleotide sequences?
A.3′-TCTACAGGTCAT-5′
B.3′-CTCGTGAACTGC-5′
C.3′-GAGCACTTGACG-5′
D.3′-AGATGTCCAGTA-5′ - CORRECT ANSWER✅✅✅A. 3′-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?
A.ADP
B.NADH
C.Sucrose
D.Water - CORRECT ANSWER✅✅✅D.Water
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?
A.The fan speed for each treatment group
B.The number of plants in each treatment group
C.The average water loss for each treatment group
D.The duration of wind exposure for each treatment group - CORRECT ANSWER✅✅✅C. The average
water loss for each treatment group
Interphase is the part of the cell cycle that includes which of the following?
A.Cytokinesis
B.Synapsis of homologous chromosomes
C.Replication of DNA
D.Condensation of chromosomes - CORRECT ANSWER✅✅✅C. Replication of DNA
A model of secondary succession typically includes which of the following?
A.The arrival of pioneer species
B.Changes in species composition over time
C.A community structure that remains stable over time
,D.The addition of rock to Earth's surface as a result of a volcanic eruption - CORRECT
ANSWER✅✅✅B. Changes in species composition over time
Which TWO of the following are typically present in a bacterial cell but not in a virus?
A.Ribosomes
B.DNA replication machinery
C.A gemome
D.Reverse transcriptase - CORRECT ANSWER✅✅✅A.Ribosomes
B.DNA replication machinery
Wind turbines are used for which of the following activities?
A.Maintaining a breeze over crops growing in an arid environment without using a lot of farm machinery
B.Generating electricity without burning fossil fuels
C.Pumping natural gas without injecting chemicals into groundwater
D.Circulating water and nutrients in some seas without installing ocean floor pumps - CORRECT
ANSWER✅✅✅B. Generating electricity without burning fossil fuels
The nucleotides of a single strand of DNA are linked together by which of the following?
A.Ionic bonds
B.Peptide bonds
C.Hydrogen bonds
D.Phosphodiester bonds - CORRECT ANSWER✅✅✅D. Phosphodiester bonds
Which of the following pathways is common to both fermentation and aerobic cellular respiration?
A.Glycolysis
, B.Electron transport chain
C.Photophosphorylation
D.Citric acid cycle - CORRECT ANSWER✅✅✅A.Glycolysis
In a germinating seedling, the root grows downward into the soil. Which of the following correctly
explains this phenomenon?
A.The root exhibits positive gravitropism.
B.The root exhibits positive phototropism.
C.The root cells respond to water in the soil.
D.The root cells need light for photosynthesis. - CORRECT ANSWER✅✅✅A.The root exhibits positive
gravitropism.
Which of the following best describes the role of transpiration in the water cycle?
A.It moves water from lakes and ponds to the oceans.
B.It moves water from the soil to the atmosphere.
C.It moves water from the atmosphere to the soil.
D.It moves water from Earth's surface to aquifers located below Earth's surface. - CORRECT
ANSWER✅✅✅B.It 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?
A.Liver
B.Neuron
C.Skin
D.Sperm - CORRECT ANSWER✅✅✅D. Sperm
QUESTIONS AND ANSWERS
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?
A."The data are used to confirm an existing belief."
B."The data are used as facts that cannot be questioned or criticized."
C."The data are used to support or reject a hypothesis."
D."The data are used to make a theory into a law." - CORRECT ANSWER✅✅✅C -"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?
A.Savanna
B.Boreal forest
C.Hot and dry desert
D.Tropical rain forest - CORRECT ANSWER✅✅✅B - Boreal Forest
One strand of a certain segment of DNA has the following nucleotide sequence.
5 - A G A T G T C C A G T A -3
The complementary strand in the same segment of DNA most likely has which of the following
nucleotide sequences?
A.3′-TCTACAGGTCAT-5′
B.3′-CTCGTGAACTGC-5′
C.3′-GAGCACTTGACG-5′
D.3′-AGATGTCCAGTA-5′ - CORRECT ANSWER✅✅✅A. 3′-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?
A.ADP
B.NADH
C.Sucrose
D.Water - CORRECT ANSWER✅✅✅D.Water
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?
A.The fan speed for each treatment group
B.The number of plants in each treatment group
C.The average water loss for each treatment group
D.The duration of wind exposure for each treatment group - CORRECT ANSWER✅✅✅C. The average
water loss for each treatment group
Interphase is the part of the cell cycle that includes which of the following?
A.Cytokinesis
B.Synapsis of homologous chromosomes
C.Replication of DNA
D.Condensation of chromosomes - CORRECT ANSWER✅✅✅C. Replication of DNA
A model of secondary succession typically includes which of the following?
A.The arrival of pioneer species
B.Changes in species composition over time
C.A community structure that remains stable over time
,D.The addition of rock to Earth's surface as a result of a volcanic eruption - CORRECT
ANSWER✅✅✅B. Changes in species composition over time
Which TWO of the following are typically present in a bacterial cell but not in a virus?
A.Ribosomes
B.DNA replication machinery
C.A gemome
D.Reverse transcriptase - CORRECT ANSWER✅✅✅A.Ribosomes
B.DNA replication machinery
Wind turbines are used for which of the following activities?
A.Maintaining a breeze over crops growing in an arid environment without using a lot of farm machinery
B.Generating electricity without burning fossil fuels
C.Pumping natural gas without injecting chemicals into groundwater
D.Circulating water and nutrients in some seas without installing ocean floor pumps - CORRECT
ANSWER✅✅✅B. Generating electricity without burning fossil fuels
The nucleotides of a single strand of DNA are linked together by which of the following?
A.Ionic bonds
B.Peptide bonds
C.Hydrogen bonds
D.Phosphodiester bonds - CORRECT ANSWER✅✅✅D. Phosphodiester bonds
Which of the following pathways is common to both fermentation and aerobic cellular respiration?
A.Glycolysis
, B.Electron transport chain
C.Photophosphorylation
D.Citric acid cycle - CORRECT ANSWER✅✅✅A.Glycolysis
In a germinating seedling, the root grows downward into the soil. Which of the following correctly
explains this phenomenon?
A.The root exhibits positive gravitropism.
B.The root exhibits positive phototropism.
C.The root cells respond to water in the soil.
D.The root cells need light for photosynthesis. - CORRECT ANSWER✅✅✅A.The root exhibits positive
gravitropism.
Which of the following best describes the role of transpiration in the water cycle?
A.It moves water from lakes and ponds to the oceans.
B.It moves water from the soil to the atmosphere.
C.It moves water from the atmosphere to the soil.
D.It moves water from Earth's surface to aquifers located below Earth's surface. - CORRECT
ANSWER✅✅✅B.It 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?
A.Liver
B.Neuron
C.Skin
D.Sperm - CORRECT ANSWER✅✅✅D. Sperm
