ATI TEAS 7
Biology
1. What is the main component of stomach acid?
- A. Hydrochloric acid
- B. Bicarbonate
- C. Bile salts
- D. Enzymes
Correct answer: A
Rationale: Rationale: Stomach acid, also known as gastric acid, is primarily composed of hydrochloric acid. Hydrochloric acid plays a crucial role in the digestive process by helping to break down food and kill bacteria in the stomach. Bicarbonate is a base that helps neutralize stomach acid in the small intestine. Bile salts are produced by the liver and stored in the gallbladder, aiding in the digestion and absorption of fats. Enzymes are proteins that help catalyze chemical reactions in the body, including the breakdown of food molecules during digestion.
2. The ball-and-socket joint, which allows for wide range of motion, is found in the connection between:
- A. Upper arm and shoulder blade (scapula)
- B. Collarbone (clavicle) and breastbone (sternum)
- C. Two vertebrae in the spine
- D. Ribs and sternum
Correct answer: A
Rationale: The correct answer is A: 'Upper arm and shoulder blade (scapula).' The ball-and-socket joint is found in the connection between the humerus (upper arm bone) and the scapula (shoulder blade). This joint allows for a wide range of motion, including flexion, extension, abduction, adduction, and rotation. The collarbone (clavicle) and breastbone (sternum) are connected by a cartilaginous joint, not a ball-and-socket joint. Two vertebrae in the spine are connected by facet joints, and the ribs and sternum are connected by cartilaginous joints and the costovertebral joints. Therefore, the ball-and-socket joint is uniquely found in the connection between the upper arm and the shoulder blade, allowing for the shoulder's impressive range of motion.
3. Which of the following is NOT a type of asexual reproduction in bacteria?
- A. Binary fission
- B. Conjugation
- C. Budding
- D. Transduction
Correct answer: D
Rationale: Rationale: A) Binary fission: This is a common method of asexual reproduction in bacteria where a single cell divides into two identical daughter cells. B) Conjugation: This is a process in which genetic material is transferred between bacterial cells through direct cell-to-cell contact, leading to genetic recombination. C) Budding: Budding is a form of asexual reproduction where a new organism develops from an outgrowth or bud on the parent organism. D) Transduction: Transduction is a method of horizontal gene transfer in bacteria where genetic material is transferred from one bacterium to another by a bacteriophage (a virus that infects bacteria). It is not a form of asexual reproduction in bacteria. Therefore, the correct answer is D) Transduction, as it is not a type of asexual reproduction in bacteria but a mechanism of genetic exchange.
4. Which element is a good conductor of electricity but is not a metal?
- A. Copper
- B. Silver
- C. Graphite
- D. Gold
Correct answer: C
Rationale: While metals are known for their conductivity, some non-metals like graphite also exhibit this property due to their unique electronic structure
5. Which sentence uses the colon correctly?
- A. I brought snacks: chips, salsa, and guacamole.
- B. The winner is: Sarah!
- C. He loves all things chocolate: cake, ice cream, and candy bars.
- D. Please bring the following items: pen, paper, and stapler.
Correct answer: A
Rationale: Colons are used to introduce a list or explanation that follows an independent clause. Options (a) and (c) use the colon correctly.
6. Her former manager demonstrated passion for serving her staff rather than being served. She
- A. Transformational leader
- B. Transactional leader
- C. Servant leader
- D. Charismatic leader
Correct answer: C
Rationale: The correct answer is C: 'Servant leader.' A servant leader prioritizes the needs of their team members, focusing on serving them rather than expecting to be served. This is evident in the scenario where the former manager showed passion for serving her staff. Servant leaders are known for their humility, empathy, and commitment to the growth and well-being of their team. This leadership approach fosters a positive work environment, builds trust, and promotes collaboration among team members.
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