HESI A2 Biology Course HESI A2 Biology
Diagnostic Test HESI A2 Biology
Diagnostic Test
Category: Biology Basics
A clinical researcher administered a pill with no therapeutic value to his
subject.
Which of the following best describes this treatment?
o Experimentation
o Placebo
o Double-blind
o Evaluation
Incorrect
Answer:
Placebo
A placebo prevents the test subjects from knowing whether they are being given
the real therapeutic drug or not. This helps the examiner understand the true
effects of the drug.
Experimentation involves a set of procedures used to test a particular hypothesis.
Double-blind keeps the identity of subjects hidden from the researcher to avoid any
researcher-patient bias in the experiments.
Evaluation involves analyzing the results of experiments and drawing valid,
scientific conclusions from them.
Report error in this question.
,2. Category: Biology Basics
Bony fishes belong to Phylum Chordata.
Which of the following levels of classification is more inclusive than
this level?
o Class
o Kingdom
o Family
o Order
Incorrect
Answer:
Kingdom is a higher or more inclusive level of the hierarchical system of
classification than the phylum level.
Living organisms are classified from most inclusive to least inclusive:
o Domain
o Kingdom
o Phylum
o Class
o Order
o Family
o Genus
o Species
Report error in this question.
3. Category: Water
Which of these defines specific heat?
, o The amount of heat needed to raise the temperature of one
kilogram of a substance by one degree Celsius
o The amount of heat needed to reduce the temperature of one
gram of a substance by one degree Celsius
o The amount of heat needed to raise the temperature of one
gram of a substance by one degree Celsius
o The amount of heat needed to reduce the temperature of one
kilogram of a substance by one degree Celsius
Incorrect
Answer:
The amount of heat needed to raise the temperature of one gram of a substance
by one degree Celsius.
This refers to specific heat. The unit of specific heat is joules per gram per degree
(J/g°C).
The amount of heat needed to reduce the temperature of one kilogram of a
substance by one degree Celsius refers to heat capacity (but the focus here is on
raising the temperature, not lowering it).
The amount of heat needed to raise the temperature of one kilogram of a
substance by one degree Celsius is not the correct definition of specific heat, which
is typically defined for one gram of a substance, not one kilogram.
The amount of heat needed to reduce the temperature of one gram of a
substance by one degree Celsius is about lowering the temperature, not raising it,
and also specifies the wrong unit of mass (gram instead of kilogram).
Report error in this question.
4. Category: Water
Polarity allows water to be a good __________.
o Molecule
Diagnostic Test HESI A2 Biology
Diagnostic Test
Category: Biology Basics
A clinical researcher administered a pill with no therapeutic value to his
subject.
Which of the following best describes this treatment?
o Experimentation
o Placebo
o Double-blind
o Evaluation
Incorrect
Answer:
Placebo
A placebo prevents the test subjects from knowing whether they are being given
the real therapeutic drug or not. This helps the examiner understand the true
effects of the drug.
Experimentation involves a set of procedures used to test a particular hypothesis.
Double-blind keeps the identity of subjects hidden from the researcher to avoid any
researcher-patient bias in the experiments.
Evaluation involves analyzing the results of experiments and drawing valid,
scientific conclusions from them.
Report error in this question.
,2. Category: Biology Basics
Bony fishes belong to Phylum Chordata.
Which of the following levels of classification is more inclusive than
this level?
o Class
o Kingdom
o Family
o Order
Incorrect
Answer:
Kingdom is a higher or more inclusive level of the hierarchical system of
classification than the phylum level.
Living organisms are classified from most inclusive to least inclusive:
o Domain
o Kingdom
o Phylum
o Class
o Order
o Family
o Genus
o Species
Report error in this question.
3. Category: Water
Which of these defines specific heat?
, o The amount of heat needed to raise the temperature of one
kilogram of a substance by one degree Celsius
o The amount of heat needed to reduce the temperature of one
gram of a substance by one degree Celsius
o The amount of heat needed to raise the temperature of one
gram of a substance by one degree Celsius
o The amount of heat needed to reduce the temperature of one
kilogram of a substance by one degree Celsius
Incorrect
Answer:
The amount of heat needed to raise the temperature of one gram of a substance
by one degree Celsius.
This refers to specific heat. The unit of specific heat is joules per gram per degree
(J/g°C).
The amount of heat needed to reduce the temperature of one kilogram of a
substance by one degree Celsius refers to heat capacity (but the focus here is on
raising the temperature, not lowering it).
The amount of heat needed to raise the temperature of one kilogram of a
substance by one degree Celsius is not the correct definition of specific heat, which
is typically defined for one gram of a substance, not one kilogram.
The amount of heat needed to reduce the temperature of one gram of a
substance by one degree Celsius is about lowering the temperature, not raising it,
and also specifies the wrong unit of mass (gram instead of kilogram).
Report error in this question.
4. Category: Water
Polarity allows water to be a good __________.
o Molecule
