ATI Teas 7 - Practice Test question and
answers GradeA+
Which of the following is improved when repeated trials of an experiment have consistent results?
A. Reliability
B. Validity
C. Independent Variables
D. Dependent Variables - correct answersA. Reliability.
Reliability speaks to the repeatability of an experiment.
Which of the following diseases is primarily caused by a toxin produced by a microorganism?
A. Cholera
B. Leprosy
C. Acne
D. HIV - correct answersA. Cholera
Diarrhea associated with cholera is caused by cholera toxin secreted by certain strains of the bacterium
vibrio cholerae.
, A student wants to design an experiment to demonstrate the effects of acid rain on plant life. Which of
the following substances should be combined with water to stimulate acid rain?
A. Vinegar
B. Table salt
C. Baking soda
D. Ammonia - correct answersA. Vinegar
Vinegar is acidic, with a pH less than 7. Adding it to the water will acidify water to stimulate acid rain.
Which of the following compounds is an ionic compound?
A. PCl3
B. H2O
C. MgF2
D. NH3 - correct answersC. MgF2
Each magnesium (valence = 2) atom transfers one electron to each of the fluorine (valence = 7) atoms,
forming ionic bonds. Molecules formed by the transfer of electrons are called ionic compounds.
Which of the following is a function of a somatic reflex?
A. It helps to produce an involuntary response in the absence of a stimulus.
B. It helps to produce a response quickly to protect the body from harm.
C. It helps to produce variable responses to the same sensory input.
D. It helps the individual to produce an appropriate voluntary response. - correct answersB. It helps to
produce a response quickly to protect the body from harm.
Reflex actions are involuntary, stereotyped, and predictable, as they require the body to respond quickly
to a specific sensory input to protect the body.
answers GradeA+
Which of the following is improved when repeated trials of an experiment have consistent results?
A. Reliability
B. Validity
C. Independent Variables
D. Dependent Variables - correct answersA. Reliability.
Reliability speaks to the repeatability of an experiment.
Which of the following diseases is primarily caused by a toxin produced by a microorganism?
A. Cholera
B. Leprosy
C. Acne
D. HIV - correct answersA. Cholera
Diarrhea associated with cholera is caused by cholera toxin secreted by certain strains of the bacterium
vibrio cholerae.
, A student wants to design an experiment to demonstrate the effects of acid rain on plant life. Which of
the following substances should be combined with water to stimulate acid rain?
A. Vinegar
B. Table salt
C. Baking soda
D. Ammonia - correct answersA. Vinegar
Vinegar is acidic, with a pH less than 7. Adding it to the water will acidify water to stimulate acid rain.
Which of the following compounds is an ionic compound?
A. PCl3
B. H2O
C. MgF2
D. NH3 - correct answersC. MgF2
Each magnesium (valence = 2) atom transfers one electron to each of the fluorine (valence = 7) atoms,
forming ionic bonds. Molecules formed by the transfer of electrons are called ionic compounds.
Which of the following is a function of a somatic reflex?
A. It helps to produce an involuntary response in the absence of a stimulus.
B. It helps to produce a response quickly to protect the body from harm.
C. It helps to produce variable responses to the same sensory input.
D. It helps the individual to produce an appropriate voluntary response. - correct answersB. It helps to
produce a response quickly to protect the body from harm.
Reflex actions are involuntary, stereotyped, and predictable, as they require the body to respond quickly
to a specific sensory input to protect the body.
