what are chromosomes made up of

ATI TEAS 7

ATI TEAS Science Questions

1. What are chromosomes made of?

A. DNA and RNA
B. DNA and protein
C. Protein and RNA
D. DNA and lipids

Correct answer: B

Rationale: Chromosomes are made up of DNA and associated proteins. These proteins help package and organize the DNA within the cell, playing a crucial role in gene regulation and cell division. While RNA is involved in various cellular processes, it is not a primary component of chromosomes. Lipids are not a fundamental component of chromosomes, which primarily consist of DNA and proteins.

2. Which verb tense is most appropriate to complete this sentence: 'By next week, I _____ the project'?

A. I will be finishing
B. I will have finished
C. I am finishing
D. I would finish

Correct answer: B

Rationale: The correct answer is option B, 'I will have finished'. This choice correctly expresses a future event (finishing the project) that will be completed before another future point in time (next week). The future perfect tense 'will have finished' is used to show an action that will be completed before a specified future time. Choice A, 'I will be finishing', is incorrect as it indicates an ongoing action that will still be in progress by next week, which is not the intended meaning. Choice C, 'I am finishing', is incorrect as it indicates a present action that is ongoing, not a future event. Choice D, 'I would finish', is incorrect as 'would' is used for hypothetical situations or polite requests, which is not suitable in this context of a future project completion.

3. What are the components of the male external genitalia and their functions?

A. Prostate gland: produces seminal fluid
B. Scrotum: protects and maintains the temperature of the testes
C. Penis: delivers sperm to female reproductive tract
D. Urethra: conducts urine out of the body

Correct answer: C

Rationale: The correct answer is C. The penis is responsible for delivering sperm to the female reproductive tract during sexual intercourse. The scrotum is not involved in producing sperm but rather protects and regulates the temperature of the testes, which is essential for sperm production. The prostate gland is involved in producing seminal fluid, not sperm. The urethra serves the purpose of conducting urine out of the body and also acts as a passage for semen during ejaculation.

4. Which of the following examples is the correct way for punctuating this quotation?

A. "I'm not going to spoil my appetite, said Philip, as he pushed the plate of cookies away."
B. "I'm not going to spoil my appetite" said Philip, as he pushed the plate of cookies away.
C. "I'm not going to spoil my appetite," said Philip, "as he pushed the plate of cookies away."
D. "I'm not going to spoil my appetite," said Philip, as he pushed the plate of cookies away.

Correct answer: D

Rationale: Option D correctly punctuates the quotation with commas separating the dialogue from the tag and action.

5. What is 0.3 as a fraction in simplest form?

A. 3/10
B. 1/3
C. 1/4
D. 1/5

Correct answer: A

Rationale: To convert 0.3 to a fraction, we take 0.3 and express it as 3/10. This fraction is already in its simplest form because 3 and 10 do not have any common factors other than 1. Choice B, 1/3, is incorrect as it represents a different value. Choice C, 1/4, and Choice D, 1/5, are also incorrect as they do not match the equivalent fraction for 0.3.