Nursing Elites

1. What is the name of the structure that packages DNA in eukaryotic cells?

• A. Nucleosome
• B. Chromatin
• C. Histone
• D. Centromere

Correct answer: A

Rationale: - A nucleosome is the basic structural unit of DNA packaging in eukaryotic cells. It consists of DNA wrapped around a core of histone proteins. - Chromatin refers to the complex of DNA and proteins found in the nucleus of a eukaryotic cell, including nucleosomes. - Histones are the proteins around which DNA is wrapped to form nucleosomes. - Centromere is a region of a chromosome where the two sister chromatids are joined and to which spindle fibers attach during cell division.

2. Where can you typically find the thesis statement of an essay?

• A. Conclusion
• B. Introduction
• C. Body paragraph
• D. Bibliography

Correct answer: B

Rationale: The thesis statement of an essay is usually located in the introduction. This is where the author establishes the main idea or argument that will be developed throughout the essay. The conclusion (Choice A) summarizes the main points and restates the thesis but does not introduce it. Body paragraphs (Choice C) provide supporting details and arguments, while the bibliography (Choice D) lists the sources used in the essay, not the thesis statement.

3. With which genotype would the recessive phenotype appear if the dominant allele is marked with 'A' and the recessive allele is marked with 'a'?

• A. AA
• B. aa
• C. Aa
• D. aA

Correct answer: B

Rationale: The recessive phenotype appears when an individual has two copies of the recessive allele. In this case, the recessive allele is marked with 'a.' Therefore, the genotype 'aa' would display the recessive phenotype as both alleles are recessive. Choice A (AA) has two dominant alleles, choice C (Aa) has one dominant and one recessive allele, and choice D (aA) represents the same genotype as Aa due to the principle of allele dominance.

4. What might happen if blood sugar begins to drop in the human body?

• A. The pancreas releases insulin.
• B. The liver releases stored glucose.
• C. The liver stores glucose as glycogen.
• D. The pancreas releases glucagon.

Correct answer: D

Rationale: When blood sugar levels drop in the body, the pancreas releases glucagon. Glucagon acts to increase blood sugar levels by stimulating the liver to release stored glucose into the bloodstream. Therefore, the correct answer is D. Choice A is incorrect because the release of insulin lowers blood sugar levels, opposite of what happens when blood sugar is dropping. Choice B is incorrect as the liver releases stored glucose in response to low blood sugar, not when blood sugar is already dropping. Choice C is also incorrect as the liver stores glucose as glycogen but doesn't directly impact blood sugar levels dropping in the moment.

5. Many _____ books are popular among adults these days.

• A. Children's
• B. Childrens's
• C. Childrens'
• D. Childrens

Correct answer: A

Rationale: The correct answer is 'Children's.' In this context, 'Children's' is the correct possessive form to indicate that the books belong to or are associated with children. Choice B ('Childrens's') is incorrect due to the unnecessary extra 's' after the apostrophe. Choice C ('Childrens'') is wrong as it is missing the apostrophe to show possession. Choice D ('Childrens') is incorrect as it is missing the apostrophe and does not form the possessive form correctly.

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