Practice Science TEAS Test

Correct Answer: B

Rationale: The correct answer is B: Semicircular canals. These structures are filled with fluid and lined with tiny hair cells that detect movement and changes in head position, helping maintain balance. The other choices are incorrect because: A: Cochlea is responsible for hearing, not balance. C: Eardrum helps transmit sound vibrations, but not related to balance. D: Auditory nerve carries signals from the ear to the brain for hearing, not balance.

Correct Answer: C

Rationale: The correct answer is C: Parietal lobe. The parietal lobe is responsible for processing sensory information, perception of stimuli, and spatial reasoning. It integrates information from different senses to create a coherent understanding of the world around us. The frontal lobe (A) is mainly involved in executive functions and motor control. The occipital lobe (B) is primarily responsible for processing visual information. The temporal lobe (D) is associated with auditory perception, memory, and language processing. Therefore, the parietal lobe is the most suitable choice for sensation, perception, and spatial reasoning.

Correct Answer: B

Rationale: Step 1: Identify the atomic number of the element based on the electron configuration (1s2 2s2 2p6 3s2) which corresponds to oxygen (O) with atomic number 8. Step 2: Determine the number of protons in the nucleus by looking at the mass number which is 14 for this atom. Step 3: Subtract the mass number from the atomic number to find the number of neutrons (14 - 8 = 6). Step 4: Protons + neutrons = mass number, so the number of protons is equal to the atomic number, which is 8. Therefore, choice B is correct. Summary: A: 14 - Incorrect, this would be the total mass number, not the number of protons. B: 6 - Correct, determined by the atomic number of the element. C: 8 - Incorrect, this is the number of protons in oxygen, not the atom described

Correct Answer: B

Rationale: The correct answer is B: Elbow joint. A hinge joint allows movement in one direction, similar to a door hinge. The elbow joint only allows flexion and extension, making it a classic example of a hinge joint. The hip joint (A) and shoulder joint (C) are examples of ball-and-socket joints, allowing a wider range of motion in multiple directions. The knee joint (D) is a modified hinge joint, allowing flexion and extension as well as slight rotation, but it is not a typical hinge joint due to its additional movements.

Correct Answer: C

Rationale: The correct answer is C: Spleen. The spleen filters pathogens from the blood through its white pulp, which contains immune cells that detect and destroy harmful microorganisms. The spleen also removes old or damaged red blood cells. A: Lymph nodes filter lymph, not blood. B: Kidneys filter waste from the blood but not pathogens. D: Pancreas is primarily involved in digestion and hormone regulation, not blood filtration.