ATI TEAS 7 - PRACTICE TEST
QUESTIONS & VERIFIED CORRECT
ANSWERS PASSED
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 Answer ✔✔ A. 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 Answer ✔✔ A. 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 Answer ✔✔ A. 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 Answer ✔✔ C. 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
Answer ✔✔ B. 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.
After doing a belly flop into a swimming pool, a child says, "The water slapped me."
Which of the following is the property of water that causes the slap?
A. Irregular expansion
B. Hydrogen bonding
C. Capillary action
D. Hydrophobic exclusion - Correct Answer ✔✔ B. Hydrogen bonding
Hydrogen bonding holds the water molecules tightly together so they cannot disperse
easily, increasing surface tension and causing the slap.
Which of the following is an example of a long bone?
A. Vertebra
B. Sacrum
C. Ribs
D. Femur - Correct Answer ✔✔ D. Femur
The femur is the long bone of the thigh. Long bones have a compact, hollow shaft
containing marrow. The ends of the bone are spongy.
Which of the following statements describes an ion of the isotope Aluminum-27?
A. The ion has 13 neutrons
B. The atom has a mass number of 14
C. The atom has 27 electrons
D. The ion has an electric charge of +3 - Correct Answer ✔✔ D. The ion has an electric
charge of +3
QUESTIONS & VERIFIED CORRECT
ANSWERS PASSED
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 Answer ✔✔ A. 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 Answer ✔✔ A. 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 Answer ✔✔ A. 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 Answer ✔✔ C. 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
Answer ✔✔ B. 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.
After doing a belly flop into a swimming pool, a child says, "The water slapped me."
Which of the following is the property of water that causes the slap?
A. Irregular expansion
B. Hydrogen bonding
C. Capillary action
D. Hydrophobic exclusion - Correct Answer ✔✔ B. Hydrogen bonding
Hydrogen bonding holds the water molecules tightly together so they cannot disperse
easily, increasing surface tension and causing the slap.
Which of the following is an example of a long bone?
A. Vertebra
B. Sacrum
C. Ribs
D. Femur - Correct Answer ✔✔ D. Femur
The femur is the long bone of the thigh. Long bones have a compact, hollow shaft
containing marrow. The ends of the bone are spongy.
Which of the following statements describes an ion of the isotope Aluminum-27?
A. The ion has 13 neutrons
B. The atom has a mass number of 14
C. The atom has 27 electrons
D. The ion has an electric charge of +3 - Correct Answer ✔✔ D. The ion has an electric
charge of +3
