Nursing Elites

1. You need to buy cardboard to cover a rectangular box with dimensions 40cm by 30cm by 25cm. Considering only the exterior surfaces (not flaps or openings), how much cardboard do you need (assume one sheet covers 0.5 sq m)?

• A. 0.3 sq m
• B. 0.6 sq m
• C. 1.2 sq m
• D. 1.8 sq m

Correct answer: C

Rationale: Calculate the areas of each side and add them up for the total surface area. Divide by the coverage area per sheet to determine the number of sheets needed.

2. What information can be obtained from the mass number of an element?

• A. The number of protons in the nucleus
• B. The total number of protons and neutrons
• C. The number of electrons in the valence shell
• D. The element's chemical reactivity

Correct answer: B

Rationale: The mass number of an element represents the total number of protons and neutrons in the nucleus. This information is crucial for determining the atomic mass of the element and understanding its stability and isotopes. The number of protons in the nucleus (option A) is represented by the atomic number, not the mass number. The number of electrons in the valence shell (option C) is related to the element's position in the periodic table and its chemical properties, but it is not directly determined by the mass number. The element's chemical reactivity (option D) is influenced by the number and arrangement of electrons in the atom's energy levels, not by the mass number.

3. What is the term for the chemical reaction that involves the loss of electrons?

• A. Reduction
• B. Oxidation
• C. Neutralization
• D. Precipitation

Correct answer: b

Rationale: Oxidation is the chemical reaction that involves the loss of electrons. The other choices describe different types of reactions.

4. Muscles that work together to produce a specific movement are called

• A. Antagonistic muscles
• B. Agonistic muscles
• C. Synergistic muscles
• D. Flexors and extensors

Correct answer: C

Rationale: Synergistic muscles are the correct answer because they are muscles that work together to produce a specific movement. These muscles coordinate their actions to achieve a common goal, such as bending the elbow or extending the knee. Antagonistic muscles work in opposition to each other, while agonistic muscles are the primary movers in a particular movement. Flexors and extensors refer to specific muscle groups that perform opposing actions, rather than working together synergistically. Understanding the concept of synergistic muscles is essential in biomechanics and exercise science.

5. What is the process by which genetic information is used to produce proteins?

• A. Replication
• B. Transcription
• C. Translation
• D. Mutation

Correct answer: C

Rationale: Rationale: A) Replication is the process by which DNA is copied to produce an identical strand of DNA. This process occurs during cell division to ensure that each daughter cell receives a complete set of genetic information. B) Transcription is the process by which genetic information from DNA is copied into a complementary RNA molecule. This RNA molecule, known as messenger RNA (mRNA), serves as a template for protein synthesis during translation. C) Translation is the process by which the genetic information carried by mRNA is decoded to produce a specific sequence of amino acids, which are then assembled into a protein. This process occurs at the ribosomes in the cytoplasm of the cell. D) Mutation refers to a change in the DNA sequence that can result in alterations to the genetic information. Mutations can occur spontaneously or be induced by external factors such as radiation or chemicals. While mutations can impact protein synthesis, they are not the process by which genetic inf

6. The fatty sheath that insulates some nerve fibers and speeds up signal transmission is called the:

• A. Myelin sheath
• B. Dura mater
• C. Pia mater
• D. Arachnoid mater

Correct answer: A

Rationale: The correct answer is A: Myelin sheath. The myelin sheath is a fatty layer that surrounds and insulates certain nerve fibers. It acts as an electrical insulator, speeding up the transmission of nerve impulses along the axon. This insulation helps to prevent signal loss or interference, allowing for faster and more efficient communication between neurons. The other options, B: Dura mater, C: Pia mater, and D: Arachnoid mater, are all layers of the meninges that protect the brain and spinal cord, but they do not play a role in insulating nerve fibers for signal transmission like the myelin sheath does.

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