Practice Science TEAS Test

Correct Answer: B

Rationale: The correct answer is B: To provide structural support. The skeletal system functions to support the body, protect internal organs, allow movement, and produce blood cells. Structural support is a primary function as bones form the framework of the body. Red blood cell production occurs in the bone marrow, not the skeletal system directly (A). Nutrient transport primarily involves the circulatory system, not the skeletal system (C). Fat storage is not a function of the skeletal system; it is mainly stored in adipose tissue (D). In summary, the skeletal system's main function is to provide structural support for the body.

Correct Answer: C

Rationale: The correct answer is C: Sciatic nerve. The sciatic nerve is the longest and thickest nerve in the human body, running from the lower back down the back of each leg. Its length allows it to innervate a large portion of the lower body. The other choices, A: Dorsal root ganglion and B: Laryngeal nerve, are not nerves but rather specific structures within the nervous system. Choice D: None of the above is incorrect as the sciatic nerve is indeed the nerve with the longest axon in the human body.

Correct Answer: B

Rationale: The correct answer is B: Malaria. Malaria is caused by a protozoan parasite called Plasmodium, which is transmitted through the bite of infected mosquitoes. Protozoan parasites are single-celled organisms that can cause various infectious diseases in humans. Measles (A), mumps (C), and mononucleosis (D) are caused by viruses, not protozoan parasites. Viruses are different from protozoa in terms of structure, replication, and mode of infection. Therefore, the correct choice is B as it aligns with the characteristic of being caused by a protozoan parasite.

Correct Answer: B

Rationale: The correct answer is B: To provide structural support. The skeletal system functions to support the body, protect internal organs, allow movement, and produce blood cells. Structural support is a primary function as bones form the framework of the body. Red blood cell production occurs in the bone marrow, not the skeletal system directly (A). Nutrient transport primarily involves the circulatory system, not the skeletal system (C). Fat storage is not a function of the skeletal system; it is mainly stored in adipose tissue (D). In summary, the skeletal system's main function is to provide structural support for the body.

Correct Answer: A

Rationale: The correct answer is A: Ribosome. Ribosomes are responsible for protein synthesis as they are the site where amino acids are assembled into proteins. They can be found in both the cytoplasm and attached to the endoplasmic reticulum. The other choices are incorrect because the nucleus houses the cell's genetic material, the mitochondrion is responsible for energy production, and the Golgi apparatus is involved in protein processing and packaging, not protein synthesis.