Practice Science TEAS Test

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: A

Rationale: The correct answer is A: Cerebrum. The cerebrum is responsible for controlling voluntary muscle movements as it houses the motor cortex, which is involved in planning, executing, and coordinating voluntary movements. It receives and processes sensory information and sends out motor commands. The cerebellum (B) mainly coordinates balance, posture, and fine motor movements, not voluntary muscle movements. The medulla oblongata (C) controls vital functions like breathing and heart rate, not voluntary muscle control. The thalamus (D) acts as a relay station for sensory information but is not directly involved in controlling voluntary muscle movements.

Correct Answer: A

Rationale: The correct answer is A: Abdominal. The peritoneum primarily lines the abdominal cavity, providing a protective and lubricating membrane for the abdominal organs. The peritoneum does not line the dorsal (B), ventral (C), or thoracic (D) cavities. The dorsal cavity is lined by the meninges, the ventral cavity is lined by serous membranes, and the thoracic cavity is lined by the pleura. Therefore, the peritoneum specifically lines the abdominal cavity, making choice A the correct answer.

Correct Answer: B

Rationale: Cytokinesis refers to the division of the cytoplasm during cell division, specifically following the separation of chromosomes. This process results in two daughter cells being formed. The correct answer is B because it accurately describes the final step in cell division where the cytoplasm is divided to complete the formation of two separate daughter cells. Choices A, C, and D are incorrect as they do not specifically pertain to the process of cytokinesis. Choice A refers to the division of the nucleus, which is known as mitosis. Choice C refers to the separation of chromosomes, which is part of the earlier stages of cell division. Choice D refers to the formation of spindle fibers, which are involved in chromosome movement during mitosis but not directly related to cytokinesis.

Correct Answer: D

Rationale: The correct answer is D because anatomical terms use specific directions to describe relationships between body parts. In this case, "lateral" refers to the side of the body, so the thumb being on the lateral aspect of the hand is accurate. The other choices are incorrect because they do not follow anatomical terminology standards. Choice A incorrectly compares the shoulder joint to the neck using proximity, not specific directional terms. Choice B uses "superior" incorrectly to describe the elbow joint in relation to the shoulder. Choice C inaccurately compares the thoracic and cervical vertebrae using the term "superior," which is not anatomically correct in this context.