ATI TEAS 7
Physics
1. The defining characteristic of an element is determined by the number of:
- A. Neutrons in its nucleus
- B. Electrons surrounding the nucleus
- C. Protons in its nucleus
- D. All of the above
Correct answer: C
Rationale: The correct answer is C: 'Protons in its nucleus.' An element is defined by the number of protons in its nucleus, known as the atomic number. This number determines the element's identity and its placement on the periodic table. Neutrons and electrons play important roles in an atom, but they do not define the element itself. Neutrons contribute to the atom's mass, while electrons are involved in chemical reactions and bonding. Therefore, the number of protons is the defining characteristic of an element.
2. Which of the following is an example of a secondary alcohol?
- A. Methanol
- B. Ethanol
- C. Isopropanol
- D. Butanol
Correct answer: C
Rationale: Isopropanol is an example of a secondary alcohol, as the hydroxyl group is attached to a carbon atom that is bonded to two other carbon atoms. The other choices are primary alcohols.
3. She checks the documentary requirements for the applicants for staff nurse position. Which
- A. Certificate of previous employment
- B. Record of related learning experience (RLE)
- C. Membership to accredited professional organization
- D. Professional identification card
Correct answer: C
Rationale: The correct answer is C: 'Membership to accredited professional organization.' When hiring staff nurses, verifying their membership to an accredited professional organization is crucial as it ensures that the applicant is recognized and affiliated with a reputable body in the nursing field. This membership signifies adherence to professional standards and ongoing education and development. While the other options are important in assessing a candidate's qualifications, membership to an accredited professional organization directly relates to the professional standing and commitment to the nursing profession, making it a key documentary requirement for the staff nurse position.
4. A circular bandage has a diameter of 6cm. What is the area covered by the bandage (area of a circle = πr^2)?
- A. 9Ï€ cm^2
- B. 18Ï€ cm^2
- C. 27Ï€ cm^2
- D. 36Ï€ cm^2
Correct answer: B
Rationale: Divide the diameter (6cm) by 2 to find the radius (3cm). Substitute into the formula and multiply by π to get 18π cm^2.
5. What is the name for the hard, protective protein that makes up hair and nails?
- A. Collagen
- B. Keratin
- C. Elastin
- D. Fibrin
Correct answer: B
Rationale: The correct answer is B: Keratin. Keratin is the name for the hard, protective protein that makes up hair and nails. Collagen is a structural protein found in connective tissues, while elastin is a protein that allows tissues in the body to resume their shape after stretching. Fibrin is a protein involved in blood clotting. Understanding the different roles of these proteins can help in identifying the correct answer as keratin specifically pertains to hair and nails.
6. A children's toy consists of a half cylinder (diameter 10cm, height 8cm) attached to a cube with side lengths of 5cm. What is the total volume of the toy?
- A. 125 cu cm
- B. 200 cu cm
- C. 275 cu cm
- D. 350 cu cm
Correct answer: C
Rationale: Calculate the volume of the half cylinder and the cube separately, then add them up.
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