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?
- Vinegar
- Table salt
- Baking soda
- Ammonia
(ANS- A. Vinegar
Which of the following terms describe the direct conversation of dry ice from the solid to the gas phase?
- Fusion
- Condensation
- Sublimation
- Evaporation
(ANS- C. Sublimation
Which of the following is the result when hemoglobin fails to transport sufficient amounts of oxygen?
- Angina
- Hearing loss
- Bone density loss
- Anemia
(ANS- A. Angina
The nucleus of an atom is composed of uncharged particles as well as which of the following?
- Protons
- Neutrons
- Electrons
- Positrons
(ANS- A. Protons 1 / 2
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?
- 4/4 red, 0/4 white
- 3/4 red, 1/4 white
- 1/2 red, 1/2 white
- 1/4 red, 3/4 white
(ANS- B. 3/4 red, 1/4 white
Which of the following is a main function of vitamins?
- Providing structure to cell membranes
- Supplying the brain with an energy source
- Facilitating the action of enzymes
- Promoting the absorption of carbohydrates
(ANS- C. Facilitating the action of enzymes
Which of the following is the key factor driving cellular differentiation in the body?
- Chemical gradients in the cellular environment
- Systemic hormonal influences
- Rate of transcription
- Cellular nutritional status
(ANS- C. Rate of transcription
Which of the following is a passive method by which glucose molecules enter cells?
- Osmosis
- Protein pump
- Filtration
- Facilitated diffusion
(ANS- D. Facilitated diffusion
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