Practice Science TEAS Test

Correct Answer: B

Rationale: The correct answer is B: Fibrous joint. Fibrous joints are immovable joints that connect bones with dense fibrous connective tissue. In the skull, the bones are joined by fibrous sutures, which provide stability and protect the brain. Hinge joints (A) allow movement in one direction, not present in the skull. Ball-and-socket joints (C) allow for a wide range of motion, not fitting the immovable nature of skull joints. Pivot joints (D) allow rotation, which is not a characteristic of skull joints. Therefore, the fibrous joint is the correct type of joint that connects the bones of the skull.

Correct Answer: A

Rationale: The correct answer is A: Spinal cord. The spinal cord is part of the central nervous system because it is located within the vertebral column and connects the brain to the rest of the body. It serves as a pathway for transmitting sensory and motor signals between the brain and the peripheral nervous system. Peripheral nerves (B) are not part of the central nervous system as they extend from the spinal cord and brain to the rest of the body. The brainstem (C) is also part of the central nervous system, but the question asks for a specific part, not a general one. The cerebellum (D) is located in the brain and is responsible for motor coordination, but it is not part of the central nervous system.

Correct Answer: B

Rationale: The correct answer is B: To transport food from the mouth to the stomach. The esophagus serves as a muscular tube that carries chewed food (bolus) from the mouth to the stomach through peristalsis, a series of muscle contractions. It does not absorb nutrients (A), break down food (C), or absorb water (D). Absorption of nutrients primarily occurs in the small intestine, food breakdown begins in the mouth and continues in the stomach and small intestine, and water absorption happens mainly in the large intestine.

Correct Answer: B

Rationale: The correct answer is B: Glycolysis. Glycolysis is the process where glucose is broken down into pyruvic acid through a series of enzymatic reactions in the cytoplasm. This process involves multiple steps including phosphorylation, isomerization, cleavage, and oxidation. Glycogenesis (choice A) is the synthesis of glycogen from glucose, not the breakdown. Glycogenolysis (choice C) is the breakdown of glycogen into glucose, not the conversion of glucose to pyruvic acid. Gluconeogenesis (choice D) is the synthesis of glucose from non-carbohydrate precursors, not the conversion of glucose to pyruvic acid.

Correct Answer: B

Rationale: The correct answer is B: Liver. The liver is responsible for producing bile, which helps in the digestion and absorption of fats. It is stored in the gallbladder (not produced by it), which releases it into the small intestine when needed. The pancreas produces digestive enzymes and insulin, not bile. The stomach produces gastric juices, not bile. In summary, the liver is the primary organ responsible for bile production, making it the correct choice.