ATI TEAS 7
Biology
1. Which of the following is the main function of the liver?
- A. To produce bile, which helps digest fats
 - B. To store energy in the form of glycogen
 - C. To produce proteins that help to clot blood
 - D. To detoxify harmful substances in the body
 
Correct answer: D
Rationale: Rationale: A) The liver does produce bile, which helps in the digestion of fats, but this is not its main function. Bile is stored in the gallbladder and released into the small intestine to aid in the digestion and absorption of fats. B) While the liver does store energy in the form of glycogen, this is not its main function. Glycogen is a form of glucose storage that can be broken down into glucose when the body needs energy. C) The liver does produce proteins that help to clot blood, such as fibrinogen and prothrombin, but this is not its main function. These proteins are essential for the blood clotting process to prevent excessive bleeding. D) The main function of the liver is to detoxify harmful substances in the body. The liver processes and removes toxins, drugs, alcohol, and other harmful substances from the bloodstream, making them less harmful and
2. She wants to ensure that every task is carried out as planned. Which of the following tasks is
- A. Instructing the members of the standards committee to prepare policies
 - B. Reviewing the existing policies of the hospital
 - C. Evaluating the credentials of all nursing staff
 - D. Checking if activities conform to schedule
 
Correct answer: C
Rationale: The correct answer is C because evaluating the credentials of all nursing staff is essential to ensuring that the right individuals are in place to carry out tasks effectively. This task directly contributes to maintaining a high standard of performance and ensuring that the team is qualified for their roles. In contrast, the other options focus on policies, reviews, and schedules, which are important but do not directly address the qualifications and capabilities of the staff responsible for task execution.
3. Which of the following is the main function of the skin?
- A. To protect the body from harm
 - B. To regulate body temperature
 - C. To produce hormones
 - D. To sense touch, temperature, and pain
 
Correct answer: A
Rationale: Rationale: A) To protect the body from harm: The skin acts as a physical barrier that protects the body from external threats such as pathogens, UV radiation, and physical injuries. It helps prevent infections and dehydration, making it a crucial function of the skin. B) To regulate body temperature: While the skin does play a role in regulating body temperature through processes like sweating and vasodilation/vasoconstriction, its primary function is protection. C) To produce hormones: Hormone production is primarily carried out by endocrine glands such as the pituitary gland, thyroid gland, and adrenal glands, not the skin. D) To sense touch, temperature, and pain: The skin contains sensory receptors that allow us to perceive touch, temperature, and pain, but this function is secondary to its main role of protecting the body from harm.
4. Stephanie is a new Staff Educator of a private tertiary hospital. She conducts orientation
- A. Organizational structure
 - B. Policy
 - C. Job description
 - D. Manual of procedures
 
Correct answer: D
Rationale: The correct answer is D, 'Manual of procedures.' During orientation, Stephanie as a Staff Educator would likely refer to the manual of procedures to provide new employees with detailed instructions on how to perform their job duties. This manual outlines the specific procedures, protocols, and guidelines that employees are expected to follow within the organization. It serves as a valuable resource for new hires to understand the standard operating procedures and expectations within the hospital setting, making it a crucial document to reference during orientation.
5. In what way does spindle fiber dynamics and microtubule attachment regulate cell cycle checkpoints?
- A. Misaligned chromosomes fail to attach to microtubules, triggering a delay in anaphase onset.
 - B. The presence of unattached kinetochores on the centromeres sends a signal to pause cell cycle progression.
 - C. Microtubule instability and rapid depolymerization lead to the activation of checkpoint proteins.
 - D. All of the above.
 
Correct answer: D
Rationale: Rationale: A) Misaligned chromosomes fail to attach to microtubules, triggering a delay in anaphase onset: During cell division, proper attachment of chromosomes to spindle fibers is crucial for accurate segregation of genetic material. If chromosomes are not correctly attached to microtubules, it can lead to misalignment, which triggers a delay in anaphase onset. This delay allows the cell to correct any errors before proceeding with cell division. B) The presence of unattached kinetochores on the centromeres sends a signal to pause cell cycle progression: Kinetochores are protein structures located at the centromere of chromosomes and are responsible for attaching chromosomes to spindle fibers. When kinetochores are unattached or improperly attached to microtubules, it sends a signal to the cell to pause cell cycle progression. This pause allows the cell to ensure that all chromosomes are properly aligned before proceeding with cell division.
6. When ice melts, it undergoes a…
- A. Chemical change
 - B. Physical change
 - C. Nuclear change
 - D. Radioactive decay
 
Correct answer: B
Rationale: Melting is a change in physical state, not a change in the chemical composition of the ice.
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