ATI TEAS 7
Chemistry
1. What is the functional group present in ethers?
- A. Hydroxyl
- B. Carbonyl
- C. Ether
- D. Amine
Correct answer: C
Rationale: Ethers have the functional group -O-, representing an oxygen atom bonded to two alkyl or aryl groups. The other choices are associated with different functional groups.
2. What happens to the acceleration of an object when the force acting on it is increased, assuming the mass remains constant?
- A. Acceleration increases
- B. Acceleration decreases
- C. Acceleration remains constant
- D. Acceleration becomes zero
Correct answer: a
Rationale: According to Newton's second law (F = ma), if mass is constant and force increases, acceleration also increases.
3. What is the process of converting ammonia, a byproduct of protein digestion, into a less toxic form?
- A. Deamination
- B. Transamination
- C. Decarboxylation
- D. Hydrolysis
Correct answer: A
Rationale: Rationale: Deamination is the process of removing an amino group from a molecule, such as converting ammonia (NH3) into a less toxic form like urea. Ammonia is a byproduct of protein digestion and needs to be converted into a less toxic form to be excreted from the body. Deamination is a key step in this process, which occurs mainly in the liver through the urea cycle. Transamination involves the transfer of an amino group from one molecule to another, not the removal of an amino group as in deamination. Decarboxylation is the removal of a carboxyl group from a molecule, and hydrolysis is the breakdown of a compound by adding water.
4. She knows that there are external forces that influence changes in his unit. Which of the
- A. Memo from the CEO to cut down on electrical consumption
- B. Demands of the labor sector to increase wages
- C. Low morale of staff in her unit
- D. Exacting regulatory and accreditation standards
Correct answer: A
Rationale: The correct answer is option A: 'Memo from the CEO to cut down on electrical consumption.' This choice represents an external force that can influence changes in the unit by setting a directive from top management to reduce electricity usage, impacting operations and decisions within the unit. While options B, C, and D may also affect the unit to some extent, they are not as directly tied to external influences as the CEO's memo. The demands of the labor sector (option B) and low staff morale (option C) are internal factors, while regulatory and accreditation standards (option D) are more overarching guidelines rather than specific external forces impacting the unit. Therefore, the most direct and relevant external force in this scenario is the directive from the CEO, making option A the correct choice.
5. Which of the following is NOT a good scientific practice?
- A. Which of the following is NOT a good scientific practice?
- B. Selecting data that supports a desired outcome and ignoring contradictory evidence.
- C. Peer-reviewing research findings before publication.
- D. Replicating experiments to confirm results and validate findings.
Correct answer: B
Rationale: Scientific objectivity requires considering all data, regardless of whether it aligns with initial expectations. Selective bias can lead to inaccurate conclusions.
6. A birthday party hat has a cone-shaped top with a radius of 5cm and a height of 12cm. What is its volume?
- A. 60 cu cm
- B. 120 cu cm
- C. 150 cu cm
- D. 180 cu cm
Correct answer: C
Rationale: Use the formula for volume of a cone: (1/3) * π * (radius)^2 * height. Substitute the values: (1/3) * π * (5cm)^2 * 12cm ≈ 150 cu cm.
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