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Nursing Elites

ATI TEAS 7

Chemistry

1. What is the functional group present in ethers?

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 is the correct way to write "25th anniversary" as a word?

Correct answer: D

Rationale: Ordinals (numbers with "th", "st", "nd", etc.) are generally written as words when used before nouns. Option (d) is correct.

3. Organisms that break down dead organisms and return nutrients to the environment are called:

Correct answer: B

Rationale: Rationale: Decomposers are organisms that break down dead organisms and organic matter, such as bacteria, fungi, and some insects. They play a crucial role in the ecosystem by breaking down complex organic materials into simpler forms, releasing nutrients back into the environment for other organisms to use. Producers (option A) are organisms that produce their own food through photosynthesis, consumers (option C) are organisms that consume other organisms for energy, and parasites (option D) are organisms that live on or in another organism and benefit at the host's expense.

4. Which organ produces insulin?

Correct answer: A

Rationale: Rationale: Insulin is a hormone that regulates blood sugar levels by facilitating the uptake of glucose into cells for energy production or storage. The pancreas is an organ located behind the stomach that plays a crucial role in producing insulin. Specialized cells within the pancreas, called beta cells, are responsible for synthesizing and secreting insulin in response to changes in blood glucose levels. Therefore, the pancreas is the organ that produces insulin.

5. Microfilaments and microtubules are both components of the cytoskeleton, but they have different functions. Which of these describes microfilaments?

Correct answer: B

Rationale: Microfilaments are composed of actin filaments and are responsible for facilitating cell movement and contraction. They play a crucial role in processes such as muscle contraction, cell division, and cell shape changes. Microfilaments are involved in generating forces for cell motility and maintaining cell shape, making option B, 'Facilitate cell movement and contraction,' the correct choice. The other options are not accurate for microfilaments: A) Structural support and shape are primarily provided by intermediate filaments, C) Mitotic spindle formation is attributed to microtubules, and D) Transport of materials within the cell is usually carried out by microtubules and motor proteins.

6. What type of error occurs in the sentence "Everyone knew who the culprit was, except for me"?

Correct answer: B

Rationale: The phrase "except for me" modifies "everyone," but it is misplaced after the verb "knew," causing confusion.

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