NAS2 CHALLENGE EXAM QUESTIONS AND ANSWERS
UPDATED 2024/2025 GRADED A+
Question 1
What is the primary purpose of the Scientific Method?
A) To prove a preconceived idea.
B) To conduct experiments quickly.
C) To solve a problem or answer a question.
D) To only observe natural phenomena.
E) To collect data without analysis.
Correct Answer: C) To solve a problem or answer a question
Rationale: The core purpose of the scientific method is a systematic
approach to inquiry, aimed at solving a problem or answering a
question through empirical evidence and logical reasoning.
Question 2
Which of the following represents the correct sequence of steps in the
scientific method?
A) Hypothesis, Question, Experiment, Observe & Record, Conclude, Analyze
B) Question, Experiment, Hypothesis, Observe & Record, Analyze, Conclude
C) Question, Hypothesis, Experiment, Observe & Record, Analyze, Conclude
D) Experiment, Question, Hypothesis, Observe & Record, Conclude, Analyze
E) Observe & Record, Question, Hypothesis, Experiment, Analyze, Conclude
Correct Answer: C) Question, Hypothesis, Experiment, Observe &
Record, Analyze, Conclude
Rationale: The provided steps of the scientific method begin with a
question, lead to a hypothesis, which is then tested by an
experiment, followed by observation, analysis, and finally a
conclusion.
Question 3
In an experiment, what is defined as a variable that stands alone and isn't
changed by the other variables being measured, changed, or controlled?
A) Dependent variable
,B) Control group
C) Experimental group
D) Independent variable
E) Constant variable
Correct Answer: D) Independent variable
Rationale: The independent variable is the factor that is manipulated
or controlled by the experimenter and is not influenced by other
variables in the study, as exemplified by "age" in the given context.
Question 4
Which type of variable is dependent on other factors and is typically tested
or measured in an experiment, such as a "test score"?
A) Independent variable
B) Control variable
C) Dependent variable
D) Confounding variable
E) Extraneous variable
Correct Answer: C) Dependent variable
Rationale: The dependent variable is the outcome or effect that is
measured and is expected to change in response to the independent
variable, like a test score being dependent on various factors.
Question 5
In a controlled experiment, which group does not receive the treatment and
is used for comparison or measurement against other subjects?
A) Experimental group
B) Treatment group
C) Control group
D) Placebo group
E) Variable group
Correct Answer: C) Control group
Rationale: The control group serves as a baseline for comparison
,because it is not subjected to the experimental intervention,
allowing researchers to isolate the effects of the independent
variable.
Question 6
Which group in an experiment is exposed to changes in the independent
variable?
A) Control group
B) Placebo group
C) Comparison group
D) Experimental group
E) Baseline group
Correct Answer: D) Experimental group
Rationale: The experimental group is the group that receives the
manipulation of the independent variable, allowing researchers to
observe its effects.
Question 7
What branch of science is concerned with the bodily structure of living
organisms, focusing on the "structure" itself?
A) Physiology
B) Biology
C) Histology
D) Anatomy
E) Cytology
Correct Answer: D) Anatomy
Rationale: Anatomy is specifically defined as the branch of science
dealing with the bodily structure of living organisms, emphasizing
their structure.
Question 8
What is the science dealing with the functions of living things or their
organs?
, A) Anatomy
B) Morphology
C) Physiology
D) Pathology
E) Etiology
Correct Answer: C) Physiology
Rationale: Physiology is the study of how living organisms and their
parts function, contrasting with anatomy's focus on structure.
Question 9
Which of the following represents the correct order of organization in living
things, from simplest to most complex?
A) Cells, Tissues, Organelle, Organs, Organ Systems, Organism
B) Organelle, Cells, Tissues, Organs, Organ Systems, Organism
C) Tissues, Cells, Organelle, Organs, Organism, Organ Systems
D) Organism, Organ Systems, Organs, Tissues, Cells, Organelle
E) Organelle, Organism, Cells, Tissues, Organs, Organ Systems
Correct Answer: B) Organelle, Cells, Tissues, Organs, Organ Systems,
Organism
Rationale: The levels of organization in living things proceed from the
smallest functional unit (organelle) to increasingly complex
structures, culminating in the complete organism.
Question 10
Which of the following is NOT listed as a requirement for life?
A) Cellular organization
B) Reproduction
C) Photosynthesis
D) Metabolism
E) Homeostasis
Correct Answer: C) Photosynthesis
Rationale: While important for many life forms, photosynthesis is a
UPDATED 2024/2025 GRADED A+
Question 1
What is the primary purpose of the Scientific Method?
A) To prove a preconceived idea.
B) To conduct experiments quickly.
C) To solve a problem or answer a question.
D) To only observe natural phenomena.
E) To collect data without analysis.
Correct Answer: C) To solve a problem or answer a question
Rationale: The core purpose of the scientific method is a systematic
approach to inquiry, aimed at solving a problem or answering a
question through empirical evidence and logical reasoning.
Question 2
Which of the following represents the correct sequence of steps in the
scientific method?
A) Hypothesis, Question, Experiment, Observe & Record, Conclude, Analyze
B) Question, Experiment, Hypothesis, Observe & Record, Analyze, Conclude
C) Question, Hypothesis, Experiment, Observe & Record, Analyze, Conclude
D) Experiment, Question, Hypothesis, Observe & Record, Conclude, Analyze
E) Observe & Record, Question, Hypothesis, Experiment, Analyze, Conclude
Correct Answer: C) Question, Hypothesis, Experiment, Observe &
Record, Analyze, Conclude
Rationale: The provided steps of the scientific method begin with a
question, lead to a hypothesis, which is then tested by an
experiment, followed by observation, analysis, and finally a
conclusion.
Question 3
In an experiment, what is defined as a variable that stands alone and isn't
changed by the other variables being measured, changed, or controlled?
A) Dependent variable
,B) Control group
C) Experimental group
D) Independent variable
E) Constant variable
Correct Answer: D) Independent variable
Rationale: The independent variable is the factor that is manipulated
or controlled by the experimenter and is not influenced by other
variables in the study, as exemplified by "age" in the given context.
Question 4
Which type of variable is dependent on other factors and is typically tested
or measured in an experiment, such as a "test score"?
A) Independent variable
B) Control variable
C) Dependent variable
D) Confounding variable
E) Extraneous variable
Correct Answer: C) Dependent variable
Rationale: The dependent variable is the outcome or effect that is
measured and is expected to change in response to the independent
variable, like a test score being dependent on various factors.
Question 5
In a controlled experiment, which group does not receive the treatment and
is used for comparison or measurement against other subjects?
A) Experimental group
B) Treatment group
C) Control group
D) Placebo group
E) Variable group
Correct Answer: C) Control group
Rationale: The control group serves as a baseline for comparison
,because it is not subjected to the experimental intervention,
allowing researchers to isolate the effects of the independent
variable.
Question 6
Which group in an experiment is exposed to changes in the independent
variable?
A) Control group
B) Placebo group
C) Comparison group
D) Experimental group
E) Baseline group
Correct Answer: D) Experimental group
Rationale: The experimental group is the group that receives the
manipulation of the independent variable, allowing researchers to
observe its effects.
Question 7
What branch of science is concerned with the bodily structure of living
organisms, focusing on the "structure" itself?
A) Physiology
B) Biology
C) Histology
D) Anatomy
E) Cytology
Correct Answer: D) Anatomy
Rationale: Anatomy is specifically defined as the branch of science
dealing with the bodily structure of living organisms, emphasizing
their structure.
Question 8
What is the science dealing with the functions of living things or their
organs?
, A) Anatomy
B) Morphology
C) Physiology
D) Pathology
E) Etiology
Correct Answer: C) Physiology
Rationale: Physiology is the study of how living organisms and their
parts function, contrasting with anatomy's focus on structure.
Question 9
Which of the following represents the correct order of organization in living
things, from simplest to most complex?
A) Cells, Tissues, Organelle, Organs, Organ Systems, Organism
B) Organelle, Cells, Tissues, Organs, Organ Systems, Organism
C) Tissues, Cells, Organelle, Organs, Organism, Organ Systems
D) Organism, Organ Systems, Organs, Tissues, Cells, Organelle
E) Organelle, Organism, Cells, Tissues, Organs, Organ Systems
Correct Answer: B) Organelle, Cells, Tissues, Organs, Organ Systems,
Organism
Rationale: The levels of organization in living things proceed from the
smallest functional unit (organelle) to increasingly complex
structures, culminating in the complete organism.
Question 10
Which of the following is NOT listed as a requirement for life?
A) Cellular organization
B) Reproduction
C) Photosynthesis
D) Metabolism
E) Homeostasis
Correct Answer: C) Photosynthesis
Rationale: While important for many life forms, photosynthesis is a
