ATI TEAS 7
Chemistry
1. What type of bond forms between elements when they share electrons?
- A. Covalent bond
- B. Ionic bond
- C. Metallic bond
- D. Hydrogen bond
Correct answer: A
Rationale: In a covalent bond, atoms share electrons, creating a strong attraction that holds them together
2. The muscular tube connecting the mouth to the stomach is lined with a mucous membrane. What is the main function of this mucous membrane?
- A. Secretion of digestive enzymes
- B. Absorption of nutrients
- C. Lubrication and protection
- D. Storage of bile
Correct answer: C
Rationale: The correct answer is C: Lubrication and protection. The mucous membrane lining the esophagus serves to provide lubrication for food as it travels from the mouth to the stomach, making it easier to swallow. Additionally, the mucous membrane protects the esophageal tissue from damage caused by the passage of food and liquids. This function is crucial in preventing irritation and inflammation of the esophagus, ensuring smooth and efficient digestion process. The mucous membrane does not secrete digestive enzymes (A), absorb nutrients (B), or store bile (D), as those functions are carried out by other digestive organs.
3. Which sentence uses the correlative conjunction "either/or" correctly?
- A. You can either come to the party or stay home.
- B. Either she will go to the concert, or he will.
- C. I'm not sure whether I should go swimming or running.
- D. He likes both pizza and pasta, so he can have either.
Correct answer: A
Rationale: Option Aa uses "either/or" to present two exclusive options.
4. A bar graph shows the number of patients admitted to the ER each day for a week. How do you determine the day with the highest number of admissions?
- A. Find the tallest bar in the graph.
- B. Compare the heights of all bars.
- C. Calculate the average number of admissions per day.
- D. Subtract the lowest number of admissions from the highest.
Correct answer: A
Rationale: The best approach is to find the tallest bar
5. What is the process of cells responding to external stimuli, such as chemicals, temperature, or touch, called?
- A. Signal transduction
- B. Homeostasis
- C. Adaptation
- D. Metabolism
Correct answer: A
Rationale: Rationale: A) Signal transduction is the process by which cells respond to external stimuli, such as chemicals, temperature, or touch. When a cell receives a signal from its environment, it initiates a series of molecular events that ultimately lead to a specific cellular response. This process involves the transmission of signals from the cell surface to the interior of the cell, where they can trigger various cellular activities. B) Homeostasis refers to the ability of an organism to maintain internal stability and balance in response to external changes. While signal transduction plays a role in maintaining homeostasis by allowing cells to respond to external stimuli, it is not the specific process of cells responding to external stimuli. C) Adaptation is the process by which an organism adjusts to its environment over time through genetic changes or behavioral modifications. While cells can adapt to changes in their environment, the process of cells responding to external stimuli
6. Alexandra is tasked to organize the new wing of the hospital. She was given the authority to
- A. Benevolent –authoritative
- B. Consultative
- C. Exploitive-authoritative
- D. Participative
Correct answer: D
Rationale: The correct answer is D: Participative. In a participative leadership style, Alexandra would involve the team members in decision-making and encourage their input when organizing the new wing of the hospital. This approach fosters collaboration, empowers team members, and can lead to better outcomes as everyone's perspectives are considered. Benevolent-authoritative (A) involves a leader who is kind and caring but makes decisions independently. Consultative (B) involves seeking input from team members but making the final decision independently. Exploitive-authoritative (C) involves a leader who uses their authority in a self-serving or oppressive manner. In this scenario, with the task of organizing a new wing of the hospital, a participative approach would be most effective in engaging the team and utilizing their expertise.
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