TEAS TEAS-SECTION-2 Online Practice Questions and Exam Preparation

TEAS TEAS-SECTION-2 Online Questions & Answers

• Question 31:

  Which of these statements regarding isotopes is not true?

  A. Isotopes of an element have the same chemical and physical properties.
  B. Isotopes are atoms of the same element with different mass numbers.
  C. Isotopes have the same number of protons and electrons in each atom, but a different number of neutrons in their nucleus.
  D. Radio-isotopes are isotopes with unstable nuclei that emit radiations.
  A. Isotopes of an element have the same chemical and physical properties.

• Question 32:

  Simple covalent compounds show which of the following properties?

  A. They are soluble in organic solvents e.g. ethanol.
  B. They conduct electricity when molten or dissolved in water.
  C. They are crystalline solids at room temperature.
  D. They have high melting and boiling points.
  A. They are soluble in organic solvents e.g. ethanol.

• Question 33:

  For a given mass and constant temperature, an inverse relationship exists between the volume and pressure of a gas. Which of the answer choices provided best defines the following statement?

  A. Stefan-Boltzmann Law
  B. Ideal Gas Law
  C. Boyle's Law
  D. Charles' Law
  C. Boyle's Law

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  Boyle's law states that for a constant mass and temperature, pressure and volume are related inversely to one another: PV = c, where c = constant.

• Question 34:

  Which of these make up a molecule of fat?

  A. three molecules of fatty acid and one molecule of glycerol
  B. one glycerol molecule and three stearic acid molecules
  C. three molecules of glycerol and one molecule of fatty acid
  D. one carbon, one hydrogen, and one oxygen molecule
  A. three molecules of fatty acid and one molecule of glycerol

• Question 35:

  Which of these statements is correct?

  A. An oxidizing agent removes oxygen or electrons from other substances.
  B. A reducing reagent either adds oxygen to, or removes electrons from, another substance.
  C. An oxidizing agent either adds oxygen to, or removes electrons from, other substances.
  D. A reducing agent removes oxygen from, or removes electrons to, another substance.
  C. An oxidizing agent either adds oxygen to, or removes electrons from, other substances.

• Question 36:

  The rate of a chemical reaction depends on all of the following except __________.

  A. amount of mass lost
  B. presence of catalysts
  C. temperature
  D. surface area
  A. amount of mass lost

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  The rate at which a chemical reaction occurs does not depend on the amount of mass lost, since the law of conservation of mass (or matter) states that in a chemical reaction there is no loss of mass.

• Question 37:

  Which of these statements regarding the gastrointestinal tract is false?

  A. Villi present in the large intestine absorb water and mineral salts.
  B. The ileum absorbs B12 and bile salts.
  C. The large intestine secretes no enzymes.
  D. Villi contain lacteals for the absorption of fats.
  A. Villi present in the large intestine absorb water and mineral salts.

• Question 38:

  Spinal muscular atrophy (SMA) is an autosomal recessive disorder.

  Knowing this information, what are the chances that a child will not have the recessive allele if both of his parents are carriers?

  A. 100%
  B. 0%
  C. 50%
  D. 25%
  D. 25%

• Question 39:

  Which of these is not regulated by the parasympathetic nervous system?

  A. increased glandular activity
  B. slowed heart rate
  C. increased intestinal activity
  D. constricted blood vessels
  D. constricted blood vessels

• Question 40:

  If someone is lying belly-down, their positioning is said to be what?

  A. posterior
  B. prone
  C. supine
  D. lateral
  B. prone