ATI TEAS 7 – PRACTICE TEST WITH QUESTIONS & ANSWERS 2025.
1. 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: .A. .Reliability.
Reliability .speaks .to .the .repeatability .of .an .experiment.
2. Which .of .the .following .diseases .is .primarily .caused .by .a .toxin .produced .by
. a .microorganism?
A. Cholera
B. Leprosy
C. Acne
D. HIV: .A. .Cholera
Diarrhea .associated .with .cholera .is .caused .by .cholera .toxin .secreted .by .certain
. strains .of .the .bacterium .vibrio .cholerae.
3. 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: .A..Vinegar
Vinegar .is .acidic, .with .a .pH .less .than .7. .Adding .it .to .the .water .will .acidify .water .to
. stimulate .acid .rain.
4. Which .of .the .following .compounds .is .an .ionic .compound?
1 ./
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,A. PCl3
B. H2O
C. MgF2
D. NH3: .C. .MgF2
Each .magnesium .(valence .= .2) .atom .transfers .one .electron .to .each .of .the .fluorine
2 ./
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, (valence .= .7) .atoms, .forming .ionic .bonds. .Molecules .formed .by .the .transfer .of
electrons .are .called .ionic .compounds.
5. 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.: .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.
6. 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: .B. .Hydrogen .bonding
Hydrogen .bonding .holds .the .water .molecules .tightly .together .so .they .cannot .dis-
. perse .easily, .increasing .surface .tension .and .causing .the .slap.
7. Which .of .the .following .is .an .example .of .a .long .bone?
A. Vertebra
B. Sacrum
C. Ribs
D. Femur: .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.
8. Which .of .the .following .statements .describes .an .ion .of .the .isotope .Alu-
3 ./
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1. 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: .A. .Reliability.
Reliability .speaks .to .the .repeatability .of .an .experiment.
2. Which .of .the .following .diseases .is .primarily .caused .by .a .toxin .produced .by
. a .microorganism?
A. Cholera
B. Leprosy
C. Acne
D. HIV: .A. .Cholera
Diarrhea .associated .with .cholera .is .caused .by .cholera .toxin .secreted .by .certain
. strains .of .the .bacterium .vibrio .cholerae.
3. 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: .A..Vinegar
Vinegar .is .acidic, .with .a .pH .less .than .7. .Adding .it .to .the .water .will .acidify .water .to
. stimulate .acid .rain.
4. Which .of .the .following .compounds .is .an .ionic .compound?
1 ./
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,A. PCl3
B. H2O
C. MgF2
D. NH3: .C. .MgF2
Each .magnesium .(valence .= .2) .atom .transfers .one .electron .to .each .of .the .fluorine
2 ./
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, (valence .= .7) .atoms, .forming .ionic .bonds. .Molecules .formed .by .the .transfer .of
electrons .are .called .ionic .compounds.
5. 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.: .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.
6. 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: .B. .Hydrogen .bonding
Hydrogen .bonding .holds .the .water .molecules .tightly .together .so .they .cannot .dis-
. perse .easily, .increasing .surface .tension .and .causing .the .slap.
7. Which .of .the .following .is .an .example .of .a .long .bone?
A. Vertebra
B. Sacrum
C. Ribs
D. Femur: .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.
8. Which .of .the .following .statements .describes .an .ion .of .the .isotope .Alu-
3 ./
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