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Nursing Elites

ATI TEAS 7

physics

1. What property of a substance refers to its ability to undergo a chemical change and form new substances with different properties?

Correct answer: c

Rationale: Reactivity refers to a substance's ability to undergo a chemical change or reaction, forming new substances with different properties.

2. Which respiratory structure is responsible for vocalization and sound production?

Correct answer: B

Rationale: The correct answer is B: Larynx. The larynx, also known as the voice box, is the respiratory structure responsible for vocalization and sound production. It contains the vocal cords, which vibrate as air passes through, producing sound. The trachea (A) is the windpipe that carries air to and from the lungs. The bronchi (C) are the main airways that branch off from the trachea into the lungs. The alveoli (D) are tiny air sacs in the lungs where gas exchange occurs, but they are not directly involved in vocalization.

3. Which statement accurately describes the periodic trends in atomic radius?

Correct answer: A

Rationale: Moving down a group, additional electron shells increase the distance from the nucleus, leading to larger atomic radii. Moving across a period, the number of electron shells remains constant, but the increasing nuclear charge pulls electrons closer, resulting in smaller radii.

4. A scientist observes a new species of plant with unusual leaves. They hypothesize that the leaves help capture more sunlight. Which observation would LEAST support this hypothesis?

Correct answer: A

Rationale: If the plant thrives in shade, it suggests the leaves may have adapted for other purposes than maximizing sunlight capture.

5. The layer of the skin responsible for new skin cell production is the:

Correct answer: B

Rationale: The correct answer is B: Stratum basale. The stratum basale, also known as the basal layer or stratum germinativum, is the deepest layer of the epidermis responsible for new skin cell production through cell division. This layer contains stem cells that continuously divide and differentiate into keratinocytes, which eventually migrate to the outer layers of the epidermis. The stratum corneum (option A) is the outermost layer of the epidermis composed of dead skin cells. The stratum granulosum (option C) is the layer above the stratum basale where keratinocytes undergo changes in their structure. The stratum spinosum (option D) is a layer above the stratum basale where cells become interconnected by desmosomes. Therefore, the stratum basale is the primary layer responsible for the production of new skin cells.

6. What is a group of organisms of the same species living in a particular area called?

Correct answer: B

Rationale: Rationale: A) Community refers to all the populations of different species living and interacting in a particular area. Since the question specifies organisms of the same species, community is not the correct answer. B) Population is a group of organisms of the same species living in a particular area. This term specifically refers to individuals of the same species and their interactions within a defined area. C) Ecosystem includes all the living organisms (biotic factors) and non-living components (abiotic factors) in a particular area and their interactions. While populations are part of an ecosystem, the term "ecosystem" is broader and includes multiple populations. D) Habitat refers to the specific environment where an organism lives, including the physical and biological factors. It is the place where a population or individual organism resides, but it does not specifically refer to a group of organisms of the same species.

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