TEAS: Science Practice Exam
A student wants to design an experiment the effects of acid rain on plant life. Which of the
following substances should be combined with water to best simulate acid rain?
A. Vinegar
B. Table salt
C. Baking soda
D. Ammonia - A. Vinegar
Which of the following terms describe the direct conversation of dry ice from the solid to
the gas phase?
A. Fusion
B. Condensation
C. Sublimation
D. Evaporation - C. Sublimation
Which of the following is the result when hemoglobin fails to transport sufficient amounts
of oxygen?
A. Angina
B. Hearing loss
C. Bone density loss
D. Anemia - A. Angina
The nucleus of an atom is composed of uncharged particles as well as which of the
following?
A. Protons
B. Neutrons
C. Electrons
D. Positrons - A. Protons
In a certain plant, red flower color (R) is dominant over white (r). If a plant heterozygous
for red flower color and one with white flower color are crossed, whcih of the following
would be the expected proportion of individuals in the next generation?
A. 4/4 red, 0/4 white
B. 3/4 red, 1/4 white
C. 1/2 red, 1/2 white
D. 1/4 red, 3/4 white - B. 3/4 red, 1/4 white
Which of the following is a main function of vitamins?
A. Providing structure to cell membranes
B. Supplying the brain with an energy source
C. Facilitating the action of enzymes
D. Promoting the absorption of carbohydrates - C. Facilitating the action of enzymes
, Which of the following is the key factor driving cellular differentiation in the body?
A. Chemical gradients in the cellular environment
B. Systemic hormonal influences
C. Rate of transcription
D. Cellular nutritional status - C. Rate of transcription
Which of the following is a passive method by which glucose molecules enter cells?
A. Osmosis
B. Protein pump
C. Filtration
D. Facilitated diffusion - D. Facilitated diffusion
Which of the following statements best describes the energy of a waterfall?
A. The water has kinetic energy because of its position at the top of the waterfall
B. The water has potential energy because of its movements as it falls to the bottom of the
waterfall
C. Potential energy changes to kinetic energy as the water falls
D. Kinetic energy changes to potential energy as the water falls - C. Potential energy
changes to kinetic energy as the water falls
Which of the following substances require daily intake because they are not stored by the
body?
A. Organic minerals
B. Inorganic minerals
C. Fat-soluble vitamins
D. Water-soluble vitamins - D. Water-soluble vitamins
A blood sample taken from a patient fighting an infection would be expected to show
A. Reduced white blood cell count
B. Elevated white blood cell count
C. Elevated red blood cell count
D. Reduced red blood cell count - B. Elevated white blood cell count
After a meal, blood flow to the gastrointestial system increases to ais in the digestion of
food. Which of the following parts of the nervous system is responsible for this response?
A. Parasympathetic
B. Sympatheic
C. Somatic
D. Central - A. Parasympathetic
In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the
following observations provides the most convincing support for this hypothesis?
A. There are more types of RNA than there are of DNA
B. RNA contains combined catalytic, structural, and genetic storage functions
C. Single-stranded RNA is less structurally complex than double-stranded DNA
A student wants to design an experiment the effects of acid rain on plant life. Which of the
following substances should be combined with water to best simulate acid rain?
A. Vinegar
B. Table salt
C. Baking soda
D. Ammonia - A. Vinegar
Which of the following terms describe the direct conversation of dry ice from the solid to
the gas phase?
A. Fusion
B. Condensation
C. Sublimation
D. Evaporation - C. Sublimation
Which of the following is the result when hemoglobin fails to transport sufficient amounts
of oxygen?
A. Angina
B. Hearing loss
C. Bone density loss
D. Anemia - A. Angina
The nucleus of an atom is composed of uncharged particles as well as which of the
following?
A. Protons
B. Neutrons
C. Electrons
D. Positrons - A. Protons
In a certain plant, red flower color (R) is dominant over white (r). If a plant heterozygous
for red flower color and one with white flower color are crossed, whcih of the following
would be the expected proportion of individuals in the next generation?
A. 4/4 red, 0/4 white
B. 3/4 red, 1/4 white
C. 1/2 red, 1/2 white
D. 1/4 red, 3/4 white - B. 3/4 red, 1/4 white
Which of the following is a main function of vitamins?
A. Providing structure to cell membranes
B. Supplying the brain with an energy source
C. Facilitating the action of enzymes
D. Promoting the absorption of carbohydrates - C. Facilitating the action of enzymes
, Which of the following is the key factor driving cellular differentiation in the body?
A. Chemical gradients in the cellular environment
B. Systemic hormonal influences
C. Rate of transcription
D. Cellular nutritional status - C. Rate of transcription
Which of the following is a passive method by which glucose molecules enter cells?
A. Osmosis
B. Protein pump
C. Filtration
D. Facilitated diffusion - D. Facilitated diffusion
Which of the following statements best describes the energy of a waterfall?
A. The water has kinetic energy because of its position at the top of the waterfall
B. The water has potential energy because of its movements as it falls to the bottom of the
waterfall
C. Potential energy changes to kinetic energy as the water falls
D. Kinetic energy changes to potential energy as the water falls - C. Potential energy
changes to kinetic energy as the water falls
Which of the following substances require daily intake because they are not stored by the
body?
A. Organic minerals
B. Inorganic minerals
C. Fat-soluble vitamins
D. Water-soluble vitamins - D. Water-soluble vitamins
A blood sample taken from a patient fighting an infection would be expected to show
A. Reduced white blood cell count
B. Elevated white blood cell count
C. Elevated red blood cell count
D. Reduced red blood cell count - B. Elevated white blood cell count
After a meal, blood flow to the gastrointestial system increases to ais in the digestion of
food. Which of the following parts of the nervous system is responsible for this response?
A. Parasympathetic
B. Sympatheic
C. Somatic
D. Central - A. Parasympathetic
In evolutionary terms, RNA is thought to have preceded proteins and DNA. Which of the
following observations provides the most convincing support for this hypothesis?
A. There are more types of RNA than there are of DNA
B. RNA contains combined catalytic, structural, and genetic storage functions
C. Single-stranded RNA is less structurally complex than double-stranded DNA
