TEAS Practice Test Science

Correct Answer: D

Rationale: The correct answer is D: Temporal lobe. The temporal lobe is responsible for processing auditory sounds as it contains the primary auditory cortex. This area interprets and processes sound information received from the ears. The frontal lobe (A) is involved in higher cognitive functions, the occipital lobe (B) is responsible for processing visual information, and the parietal lobe (C) is involved in sensory processing and spatial awareness. Therefore, the temporal lobe is the correct choice for processing auditory sounds.

Correct Answer: C

Rationale: The correct answer is C: Pluripotent stem cells. Pluripotent stem cells can differentiate into many different cell types but cannot form a complete organism. They have the ability to give rise to cells of all three germ layers. Totipotent stem cells (A) can form a complete organism, including both embryonic and extra-embryonic tissues. Multipotent stem cells (B) can develop into a limited range of cell types. Hematopoietic stem cells (D) specifically give rise to blood cells and their progenitors, so they are more specialized compared to pluripotent stem cells.

Correct Answer: B

Rationale: The pancreas produces insulin to lower blood sugar levels and glucagon to raise them. Insulin helps cells take in glucose for energy or storage. Glucagon signals the liver to release stored glucose. Storing glucose (option C) is not the primary function of the pancreas. Adrenaline (option D) is produced by the adrenal glands, not the pancreas.

Correct Answer: C

Rationale: The correct answer is C: molarity. Molarity is a concentration unit that depends on pressure because it is defined as the number of moles of solute dissolved in one liter of solution. Pressure can affect the volume of the solution, thus impacting the molarity. A: ppm (parts per million) and B: ppb (parts per billion) are mass-based concentration units and do not directly depend on pressure. D is incorrect because while molarity does depend on pressure, ppm and ppb do not.

Correct Answer: B

Rationale: The correct answer is B: Liver. The liver produces bile, a greenish-yellow fluid that aids in digestion by breaking down fats. The pancreas (choice A) produces digestive enzymes, not bile. The gallbladder (choice C) stores and concentrates bile produced by the liver, but it does not produce bile itself. The stomach (choice D) produces gastric juices to break down food, but it does not produce bile. Therefore, the liver is the organ responsible for producing bile to aid in digestion.