ATI TEAS BIOLOGY AND CHEMISTRY ACTUAL EXAM 2025|169
QUESTIONS WITH VERIFIED ACCURATE SOLUTIONS
1. What property of water is primarily responsible for its high surface tension?
Cohesion
Hydrogen bonding
Adhesion
Density
2. If a child has blood type O, which of the following parental genotype
combinations is impossible?
One parent is homozygous for blood type A and the other is
homozygous for blood type O
One parent is heterozygous for blood type A and the other is
heterozygous for blood type B
One parent has blood type AB and the other is homozygous for
blood type O
Both parents are homozygous for blood type O
3. What is the primary function of the cardiac sphincter in relation to acid
reflux?
To regulate the flow of gastric juices into the stomach
To prevent the backflow of stomach contents into the esophagus
To facilitate the movement of food from the esophagus to the
stomach
To increase the production of gastric juices
4. Which of the following compounds transfers methyl group to synthesize
methionine from homocysteine in the methionine synthase catalyzed
reaction?
, N5-Methenyl tetrahydrofolate
Methylcobalamin
N5, N10-Methylene tetrahydrofolate
N5-Methyl tetrahydrofolate
5. Explain the difference between passive immunity and active immunity in
the context of an infant's immune system development.
Passive immunity involves the infant producing its own antibodies,
while active immunity involves receiving antibodies from another
source.
Passive immunity is temporary and involves the transfer of
antibodies, while active immunity is long-lasting and involves the
body's own immune response.
Passive immunity is only acquired through vaccinations, while active
immunity is acquired through natural infection.
Passive immunity is present at birth, while active immunity develops
only after exposure to pathogens.
6. If a mutation occurs in a regulatory gene that leads to its constant
activation, what effect might this have on the expression of structural
genes?
Structural genes will be completely silenced
Structural genes will be expressed at higher levels than normal
Structural genes will be expressed only during specific conditions
Structural genes will be unaffected
7. Consider a species of frog that has a very specific habitat requirement,
such as a particular type of wetland. If climate change leads to the drying
up of these wetlands, what is the most likely outcome for this frog species?
The frog will migrate to a new habitat and thrive.
, The frog will adapt to the new conditions and survive.
The frog will face a high risk of extinction.
The frog will evolve new traits to cope with the changes.
8. Explain why density is considered an intensive property and provide an
example of how it differs from an extensive property.
A. Density is dependent on the amount of material, while mass is
not.
B. Density remains constant regardless of the sample size, while
mass increases with more material.
C. Density can change with temperature, while volume does not.
D. Density is a measure of temperature, while length is a measure of
mass.
9. A breastfed infant is initially immune to the same diseases as her mom.
Which of the following describes the infant's immunity?
Naturally acquired passive immunity
Naturally acquired active immunity
Artificially acquired active immunity
Artificially acquired passive immunity
10. This figure shows a solute molecule (X) surrounded by a hydration shell of
water. Based on your knowledge of the polarity of water molecules, the
solute molecule is most likely:
, Positively charged.
Negatively charged.
Non-polar.
Hydrophobic.
11. If a patient has a dysfunction in their sphincter muscle, what potential
symptoms might they experience related to bodily functions?
Increased heart rate
Difficulty in swallowing or controlling bowel movements
Impaired vision
Reduced muscle strength
12. What type of bond is formed between nitrogen and hydrogen in an
ammonia molecule (NH3) due to nitrogen's higher electronegativity?
Nonpolar covalent bonds
Polar covalent bonds
Ionic bonds
Metallic bonds
QUESTIONS WITH VERIFIED ACCURATE SOLUTIONS
1. What property of water is primarily responsible for its high surface tension?
Cohesion
Hydrogen bonding
Adhesion
Density
2. If a child has blood type O, which of the following parental genotype
combinations is impossible?
One parent is homozygous for blood type A and the other is
homozygous for blood type O
One parent is heterozygous for blood type A and the other is
heterozygous for blood type B
One parent has blood type AB and the other is homozygous for
blood type O
Both parents are homozygous for blood type O
3. What is the primary function of the cardiac sphincter in relation to acid
reflux?
To regulate the flow of gastric juices into the stomach
To prevent the backflow of stomach contents into the esophagus
To facilitate the movement of food from the esophagus to the
stomach
To increase the production of gastric juices
4. Which of the following compounds transfers methyl group to synthesize
methionine from homocysteine in the methionine synthase catalyzed
reaction?
, N5-Methenyl tetrahydrofolate
Methylcobalamin
N5, N10-Methylene tetrahydrofolate
N5-Methyl tetrahydrofolate
5. Explain the difference between passive immunity and active immunity in
the context of an infant's immune system development.
Passive immunity involves the infant producing its own antibodies,
while active immunity involves receiving antibodies from another
source.
Passive immunity is temporary and involves the transfer of
antibodies, while active immunity is long-lasting and involves the
body's own immune response.
Passive immunity is only acquired through vaccinations, while active
immunity is acquired through natural infection.
Passive immunity is present at birth, while active immunity develops
only after exposure to pathogens.
6. If a mutation occurs in a regulatory gene that leads to its constant
activation, what effect might this have on the expression of structural
genes?
Structural genes will be completely silenced
Structural genes will be expressed at higher levels than normal
Structural genes will be expressed only during specific conditions
Structural genes will be unaffected
7. Consider a species of frog that has a very specific habitat requirement,
such as a particular type of wetland. If climate change leads to the drying
up of these wetlands, what is the most likely outcome for this frog species?
The frog will migrate to a new habitat and thrive.
, The frog will adapt to the new conditions and survive.
The frog will face a high risk of extinction.
The frog will evolve new traits to cope with the changes.
8. Explain why density is considered an intensive property and provide an
example of how it differs from an extensive property.
A. Density is dependent on the amount of material, while mass is
not.
B. Density remains constant regardless of the sample size, while
mass increases with more material.
C. Density can change with temperature, while volume does not.
D. Density is a measure of temperature, while length is a measure of
mass.
9. A breastfed infant is initially immune to the same diseases as her mom.
Which of the following describes the infant's immunity?
Naturally acquired passive immunity
Naturally acquired active immunity
Artificially acquired active immunity
Artificially acquired passive immunity
10. This figure shows a solute molecule (X) surrounded by a hydration shell of
water. Based on your knowledge of the polarity of water molecules, the
solute molecule is most likely:
, Positively charged.
Negatively charged.
Non-polar.
Hydrophobic.
11. If a patient has a dysfunction in their sphincter muscle, what potential
symptoms might they experience related to bodily functions?
Increased heart rate
Difficulty in swallowing or controlling bowel movements
Impaired vision
Reduced muscle strength
12. What type of bond is formed between nitrogen and hydrogen in an
ammonia molecule (NH3) due to nitrogen's higher electronegativity?
Nonpolar covalent bonds
Polar covalent bonds
Ionic bonds
Metallic bonds
