which of the following is in dna

ATI TEAS 7

ATI TEAS Practice Test Science

1. Which of the following components is found in DNA?

A. Uracil
B. Deoxyribose
C. Guanine
D. Phosphate group

Correct answer: B

Rationale: The correct answer is B: Deoxyribose. DNA is composed of nucleotides containing deoxyribose sugar, phosphate group, and nitrogenous bases (adenine, thymine, guanine, and cytosine). Deoxyribose is the sugar component specific to DNA, while ribose is found in RNA. Guanine (choice C) is a nitrogenous base present in both DNA and RNA. Uracil (choice A) is a nitrogenous base specific to RNA, replacing thymine found in DNA. The phosphate group (choice D) is an essential part of nucleotides in both DNA and RNA, providing the backbone structure for the nucleic acid chains.

2. Which factor affects the gravitational potential energy of an object the most?

A. The mass of the object
B. The distance from the ground
C. The gravitational force
D. The shape of the object

Correct answer: B

Rationale: Gravitational potential energy is directly proportional to the height or distance from the ground. As the object is raised higher, its gravitational potential energy increases. While the mass of the object influences gravitational potential energy, the distance from the ground has a more significant impact on it. The gravitational force does not directly affect the gravitational potential energy; it is the force that causes the potential energy to change with height. The shape of the object also does not determine gravitational potential energy, as it is primarily determined by the object's position in a gravitational field.

3. Which of the following is a logical conclusion that can be derived from the announcement above?

A. The library is planning to charge patrons for extended computer use to generate additional revenue.
B. The library is implementing the fee to encourage patrons to use the computers more efficiently.
C. The library has added the fee to discourage patrons from spending too long on the computers.
D. The library is aiming to cover the costs of maintaining the computers by charging patrons for extended use.

Correct answer: C

Rationale: The correct answer is C. The fee imposed by the library is likely intended to discourage patrons from spending excessive time on the computers, ensuring fair usage of limited computer resources. This measure is implemented to promote equal access to all visitors. Choice A is incorrect because the purpose of the fee is not primarily to generate additional revenue but rather to regulate computer usage. Choice B is incorrect as the fee is not meant to encourage more efficient computer use but rather to limit the duration of use. Choice D is incorrect as the main goal of the fee is not to cover maintenance costs but to manage computer access.

4. Where does fertilization typically occur in the female reproductive system?

A. uterus
B. fallopian tube
C. endometrium
D. ovary

Correct answer: B

Rationale: Fertilization typically occurs in the fallopian tube, specifically in the ampulla, which is the widest part of the tube. After ovulation, the released egg travels through the fallopian tube where it may encounter sperm for fertilization to take place. The fallopian tube provides the ideal environment for fertilization due to the presence of cilia that help move the egg and sperm towards each other. The uterus is where the fertilized egg will implant and develop into a fetus, not where fertilization occurs. The endometrium is the lining of the uterus that thickens to support a potential pregnancy but is not the site of fertilization. The ovary releases the egg during ovulation but is not where fertilization occurs.

5. What is the purpose of the italics used for several of the words identified in the sentence above?

A. to indicate a full-length published book
B. to indicate a work of classic literature
C. to indicate recommended summer reading
D. to indicate books that Angela completed

Correct answer: D

Rationale: The purpose of the italics used for several words in the sentence is to indicate books that Angela completed during the summer. The italics are used for titles of books or literary works, showing emphasis or highlighting specific titles. In the provided extract, titles like 'The Great Gatsby,' 'Brave New World,' and 'A Passage to India' are italicized, indicating completed readings. Choice A is incorrect as it does not accurately reflect the purpose of italics in this context. Choice B is incorrect because the use of italics does not specifically indicate classic literature. Choice C is also incorrect as the italics are not related to recommendations but rather completion of reading.