how do dna and rna function together as part of the human genome

ATI TEAS 7

ATI TEAS 7 Science Practice Test

1. How do DNA and RNA function together as part of the human genome?

A. DNA carries genetic information from RNA to the cell cytoplasm.
B. RNA carries genetic information from DNA to the cell cytoplasm.
C. DNA and RNA carry genetic information from the cell nucleus to the cytoplasm.
D. DNA and RNA do not interact within the cell.

Correct answer: B

Rationale: The correct answer is B. RNA acts as a messenger carrying genetic instructions from the DNA in the nucleus to the cytoplasm, where proteins are synthesized. This process is known as transcription and translation, where DNA provides the blueprint for protein synthesis, and RNA delivers this information to the cellular machinery in the cytoplasm. Choice A is incorrect as it inaccurately states that DNA carries genetic information from RNA, which is the opposite of the actual flow of information. Choice C is incorrect as it suggests that both DNA and RNA together carry genetic information from the nucleus to the cytoplasm, which is not accurate. Choice D is incorrect as DNA and RNA do interact within the cell, playing crucial roles in genetic information processing and protein synthesis.

2. Which of the following words are synonyms for 'erroneously' as used in the passage? (select all that apply)

A. Incorrectly
B. Inconsequentially
C. Mistakenly
D. Extraneously

Correct answer: A, C

Rationale: 'Erroneously' means incorrectly or mistakenly, which aligns with the context provided in the passage. Therefore, 'Incorrectly' and 'Mistakenly' are synonyms for 'erroneously.' 'Inconsequentially' means not resulting in any significant consequence, which is not synonymous with 'erroneously.' 'Extraneously' means irrelevant or unnecessary, which is also not a synonym for 'erroneously.'

3. Which property of matter refers to the force of gravity acting on an object?

A. Mass
B. Weight
C. Density
D. Volume

Correct answer: B

Rationale: Weight is the property of matter that refers to the force of gravity acting on an object. Mass is the amount of matter in an object, not affected by gravity. Density is the mass per unit volume of a substance, not directly related to gravity. Volume is the amount of space that an object occupies, not a measure of gravity's force.

4. What is 4.6 rounded to the nearest integer?

A. 3
B. 4
C. 5
D. 6

Correct answer: C

Rationale: When rounding a decimal number to the nearest integer, if the decimal part is 0.5 or greater, we round up to the next integer; if it is less than 0.5, we round down. In this case, 4.6 is closer to 5 than to 4 because it is exactly halfway between the two integers. Therefore, when rounding 4.6 to the nearest integer, we round up to 5. Choice A (3), B (4), and D (6) are incorrect as they are not the nearest integer to 4.6.

5. If Cynthia wants to pick the meal where there would be the least options for her and fellow vegetarians, during what meal should she bring the platter?

A. Breakfast
B. Lunch
C. Cocktail hour
D. Dinner

Correct answer: D

Rationale: Dinner has the least vegetarian options, making it the most suitable meal for Cynthia to bring her platter. The dinner menu includes Roasted pork loin, seared trout, and bacon-bit topped macaroni and cheese, which are all non-vegetarian dishes. Breakfast, Lunch, and Cocktail hour all have vegetarian options available, making them less suitable for Cynthia's vegetarian platter.