ATI TEAS 7
ATI TEAS 7 Version 1 Science Questions
Extract:
Question 1 of 5
Lithium has an atomic number of 3 and a mass number of 7. What is the number of protons in a lithium atom?
Correct Answer: D
Rationale: The number of protons in an atom is equal to its atomic number. In this case, lithium has an atomic number of 3, so it contains 3 protons. The mass number (7) includes both protons and neutrons, with the difference between the mass number and atomic number representing the number of neutrons. Therefore, the correct answer is 3 protons in a lithium atom.
Question 2 of 5
Which of the following spinal regions contains the largest number of vertebrae?
Correct Answer: A
Rationale: The thoracic region contains 12 vertebrae, which is more than the 5 lumbar, 7 cervical, and 5 sacral vertebrae.
Question 3 of 5
The triple point of a substance is the temperature and pressure at which the substance exists as which of the following?
Correct Answer: C
Rationale: The triple point is a specific condition where a substance can exist simultaneously in all three phases: solid, liquid, and gas. The other options do not accurately describe this state.
Extract:
Question 4 of 5
After infecting host cells, how does the AIDS virus, which contains RNA, insert viral DNA into the host T-cell?
Correct Answer: B
Rationale: Reverse transcriptase is an essential enzyme unique to retroviruses like the AIDS virus. It catalyzes the conversion of viral RNA into DNA through a process known as reverse transcription. The newly formed viral DNA is then integrated into the host cell's genome, enabling the virus to replicate and establish a persistent infection within the host.
Extract:
Question 5 of 5
Which of the following cells secrete bone material?
Correct Answer: D
Rationale: Osteocytes are the cells responsible for maintaining bone tissue and secreting bone material, contributing to the overall structure and strength of bones.