Nursing Elites

1. What is the primary function of the ovaries in the female reproductive system?

• A. Transport sperm to the uterus
• B. Produce milk for feeding offspring
• C. Produce eggs (ova)
• D. Regulate urination

Correct answer: C

Rationale: The primary function of the ovaries in the female reproductive system is to produce eggs (ova). Ovaries are responsible for the production of female gametes. Additionally, they secrete hormones such as estrogen and progesterone, which are essential for the menstrual cycle and pregnancy. Transporting sperm to the uterus is the function of the fallopian tubes, not the ovaries. Producing milk for feeding offspring is the role of the mammary glands, not the ovaries. Regulating urination is a function associated with the urinary system, not the female reproductive system or the ovaries.

2. What type of muscle is found in the walls of hollow organs like the intestines?

• A. Cardiac muscle
• B. Smooth muscle
• C. Skeletal muscle
• D. Voluntary muscle

Correct answer: B

Rationale: Smooth muscle is the correct type of muscle found in the walls of hollow organs like the intestines. It is responsible for movements such as peristalsis, aiding in the movement of food and other materials through the digestive system. Cardiac muscle (Choice A) is found in the heart and is responsible for the heart's contractions, not in hollow organs like the intestines. Skeletal muscle (Choice C) is attached to bones and responsible for voluntary movements, not in hollow organ walls. Voluntary muscle (Choice D) is another term for skeletal muscle, which is under conscious control, unlike smooth muscle in hollow organ walls.

3. What is the difference between a real image and a virtual image formed by a lens?

• A. Real images can be projected onto a screen, while virtual images cannot.
• B. Real images are always upright, while virtual images can be inverted.
• C. Real images are formed by converging lenses, while virtual images are formed by diverging lenses.
• D. All of the above are true.

Correct answer: A

Rationale: The correct answer is A. Real images can be projected onto a screen because they are formed by the actual convergence of light rays, while virtual images cannot be projected onto a screen as they appear to diverge from a point behind the lens. Real and virtual images do not have a consistent orientation (upright or inverted), so option B is incorrect. Real images are formed by both converging and diverging lenses depending on the specific scenario, so option C is not a definitive distinction. Option D is incorrect as not all the statements are true. Therefore, the only accurate general distinction between real and virtual images is that real images can be projected onto a screen, while virtual images cannot.

4. Which term describes the allele for green eyes?

• A. Dominant
• B. Recessive
• C. Homozygous
• D. Heterozygous

Correct answer: B

Rationale: The correct answer is 'B: Recessive.' In genetics, eye color is determined by multiple genes, with green eyes often being associated with a recessive allele. When an individual carries two copies of the recessive allele for green eyes, they will express this eye color. Dominant alleles are expressed over recessive alleles. Homozygous refers to having two identical alleles for a particular gene, and heterozygous refers to having two different alleles. In this context, the allele for green eyes is recessive, meaning it is expressed only when an individual carries two copies of this specific allele. Therefore, 'Recessive' is the most appropriate term to describe the allele for green eyes, making it the correct answer.

5. What type of energy does a stretched rubber band possess?

• A. Kinetic energy
• B. Potential energy
• C. Thermal energy
• D. Mechanical energy

Correct answer: B

Rationale: When a rubber band is stretched, it stores potential energy due to its position or configuration. This potential energy can be converted into kinetic energy when the rubber band is released and returns to its original shape. Therefore, the correct answer is potential energy, as the energy is stored in the stretched rubber band and can be released upon returning to its original state. Choices A, C, and D are incorrect because kinetic energy is associated with motion, thermal energy is related to heat, and mechanical energy is a broader category that includes both potential and kinetic energy.

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