Nursing Elites

1. What are the three types of muscle tissues?

• A. Cardiac, smooth, epithelial
• B. Skeletal, cardiac, smooth
• C. Cardiac, smooth, connective
• D. Skeletal, epithelial, connective

Correct answer: B

Rationale: The correct answer is B: Skeletal, cardiac, smooth. Skeletal muscle tissue is responsible for voluntary movement, cardiac muscle tissue is found in the heart and is responsible for involuntary heart contractions, and smooth muscle tissue is located in organs and is responsible for involuntary movements. Therefore, the three types of muscle tissues are skeletal, cardiac, and smooth. Choices A, C, and D are incorrect because they include types of tissues that are not classified as muscle tissues. Epithelial and connective tissues are different types of tissues that serve other functions in the body, not related to muscle contractions.

2. During a scientific investigation, what is intentionally changed or manipulated?

• A. The dependent variable.
• B. The control.
• C. The hypothesis.
• D. The independent variable.

Correct answer: D

Rationale: During a scientific investigation, the independent variable is intentionally changed or manipulated by the researcher to observe its impact or effect on the dependent variable. The independent variable is the one being tested or studied to see how it influences the dependent variable. In contrast, the dependent variable is the outcome or response that is measured in an experiment and is expected to change as a result of the manipulation of the independent variable. Choices A, B, and C are not directly altered during a scientific investigation but play different roles in the research process. Therefore, the correct answer is D - the independent variable.

3. In which of the following situations would it be best to use informal language?

• A. In a seminar
• B. Writing a postcard
• C. Talking to your boss
• D. Participating in a professional conference

Correct answer: B

Rationale: The correct answer is writing a postcard (Choice B). A postcard is a casual form of communication, typically sent to friends or family, making it a suitable context for informal language. Using informal language in a seminar (Choice A) would be inappropriate as it is a formal setting where professional language is expected. Talking to your boss (Choice C) and participating in a professional conference (Choice D) also require formal language to maintain professionalism and respect for the workplace environment.

4. Which of the following is the most reliable source for scholarly research?

• A. Peer-reviewed articles
• B. Wikipedia
• C. Opinion articles from a newspaper
• D. Blogs and other social media

Correct answer: A

Rationale: The correct answer is 'Peer-reviewed articles.' Peer-reviewed articles are considered highly reliable because they undergo a rigorous evaluation process by experts in the field before publication. This process ensures that the research presented is of high quality and meets academic standards. Choice B, 'Wikipedia,' is not considered a reliable source for scholarly research as it can be edited by anyone, leading to potential inaccuracies. Choice C, 'Opinion articles from a newspaper,' may provide perspectives but may not always be based on rigorous research or evidence. Choice D, 'Blogs and other social media,' lack the rigorous review process that peer-reviewed articles undergo, making them less reliable for scholarly research.

5. What are Mendel's laws?

• A. Law of inheritance, law of expression
• B. Law of segregation, law of independent assortment
• C. Law of dominance, law of recessiveness
• D. Law of mutation, law of crossing over

Correct answer: B

Rationale: The correct answer is B. Mendel's laws consist of the law of segregation, which states that each parent passes one allele for each trait, and the law of independent assortment, which explains that genes for different traits are inherited independently. Choice A is incorrect because 'law of expression' is not one of Mendel's laws. Choice C is incorrect because 'law of dominance' and 'law of recessiveness' do not represent the two main laws proposed by Mendel. Choice D is incorrect because 'law of mutation' and 'law of crossing over' are not part of Mendel's original laws.

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