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Nursing Elites

ATI TEAS 7

Anatomy

1. Which type of joint allows for the widest range of motion, like the shoulder joint?

Correct answer: B

Rationale: The correct answer is B: Ball-and-socket joint. A ball-and-socket joint, like the shoulder joint, allows for the widest range of motion in all directions, including flexion, extension, abduction, adduction, and rotation. This type of joint consists of a rounded, ball-like end of one bone fitting into a cup-like socket of another bone, providing great mobility and flexibility. Hinge joints, like the elbow, only allow movement in one plane (like a door hinge), gliding joints permit limited sliding movements between bones, and fixed joints, such as those in the skull, have no movement at all.

2. What is the difference between homologous chromosomes and sister chromatids?

Correct answer: A

Rationale: Rationale: - Homologous chromosomes are pairs of chromosomes that have the same genes in the same order, one from each parent. While they carry the same genes, they may have different alleles (variants of a gene). - Sister chromatids are exact copies of each other, formed during DNA replication. They are held together by a centromere and are produced during the S phase of the cell cycle. - During meiosis, homologous chromosomes pair up and exchange genetic material through crossing over, leading to genetic variation. Sister chromatids separate during mitosis to ensure each daughter cell receives an identical copy of the genetic material.

3. When is work done by a force on an object?

Correct answer: A

Rationale: Work is done by a force on an object when the object moves in the direction of the force. If the object moves perpendicular to the force, no work is done, as the force does not contribute to the displacement of the object. Similarly, if the object moves against the force, work is done because the force is causing the displacement. The vertical movement of the object does not determine whether work is done; it is the direction of the force relative to the object's displacement that matters. The duration of the force application does not affect whether work is done; as long as the force causes the object to move in its direction, work is being done.

4. What type of bond involves the complete transfer of electrons between atoms?

Correct answer: B

Rationale: Ionic bond - Electrons are completely transferred from one atom to another, creating cations and anions with strong electrostatic attraction.

5. Which of the following is NOT a function of the nervous system?

Correct answer: C

Rationale: The correct answer is C: 'Producing insulin.' The nervous system is responsible for detecting touch (option A), regulating body temperature (option B), and controlling muscle movement (option D). Insulin production is actually regulated by the endocrine system, specifically the pancreas. Insulin helps regulate blood sugar levels, which is not a function of the nervous system. It is important to differentiate between the roles of the nervous system and the endocrine system in maintaining bodily functions.

6. When ice melts, it undergoes a…

Correct answer: B

Rationale: Melting is a change in physical state, not a change in the chemical composition of the ice.

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