TEAS 7 Science Practice Test

Correct Answer: C

Rationale: The correct answer is C: parietal lobe. The parietal lobe is primarily responsible for processing and integrating sensory information received from the rest of the body. It plays a key role in processing touch, pressure, temperature, and pain sensations. Additionally, the parietal lobe is involved in spatial perception, attention, and body awareness. Frontal lobe (A) is responsible for higher cognitive functions such as decision-making and problem-solving. Occipital lobe (B) is primarily responsible for processing visual information. Temporal lobe (D) is involved in processing auditory information and memory functions. Therefore, the parietal lobe is the most appropriate choice for processing and integrating sensory information.

Correct Answer: D

Rationale: The correct answer is D: insulin production and blood sugar regulation. The liver is not responsible for insulin production; it is produced by the pancreas. The liver does play a role in blood sugar regulation by storing and releasing glucose, but it is not the primary organ for insulin production. The other choices (A, B, C) are functions of the liver: A) nutrient processing involves metabolizing and storing nutrients, B) blood filtration and detoxification involves removing toxins from the blood, and C) cholesterol and lipoprotein production involves synthesizing cholesterol and lipoproteins.

Correct Answer: D

Rationale: The correct answer is D: conducting and respiratory. The conducting zone consists of structures that conduct air to the respiratory zone where gas exchange occurs. The respiratory zone includes the alveoli where oxygen is absorbed and carbon dioxide is released. Choices A, B, and C do not accurately represent the major zones of the respiratory system. The left and right bronchi are part of the conducting zone, not major zones. The nose and mouth are entry points but not major zones. The larynx and pharynx are part of the upper respiratory tract, not major zones.

Correct Answer: D

Rationale: Peristalsis is the correct term as it refers to the rhythmic muscle contractions that propel food through the digestive tract. First, the circular muscles contract behind the food bolus, pushing it forward. Then, the longitudinal muscles contract, shortening the tract and pushing the food further. This process continues in a wave-like fashion, aiding in digestion. A: Digestion refers to the breakdown of food into smaller molecules. B: Deglutition is the process of swallowing food. C: Defecation is the elimination of waste from the body. Therefore, peristalsis is the correct term as it specifically describes the muscle contractions that move food through the digestive system.

Correct Answer: C

Rationale: The correct answer is C because isotopes are atoms of the same element that have different numbers of neutrons. Neutrons are the subatomic particles that do not have a charge and are found in the nucleus of an atom. Different isotopes of an element have the same number of protons (which determines the element's identity) but vary in the number of neutrons, leading to differences in atomic mass. This distinction in neutron number is the defining characteristic of isotopes. Choices A, B, and D are incorrect: A: Isotopes do not have different ionic charges as they have the same number of protons and electrons, maintaining overall charge neutrality. B: Isotopes can be found across different groups on the periodic table, not restricted to the same group. D: Isotopes can have the same electron configurations since electrons are primarily determined by the number of protons in the nucleus, which remains constant for isotopes of the same element.