The nurse correlates which factor to an increased risk of endometrial cancer in women with early menarche or late menopause?

Correct Answer: A

Rationale: The correct answer is A: Total number of ovulatory cycles. Early menarche and late menopause lead to a longer reproductive period, resulting in more ovulatory cycles. Increased exposure to estrogen due to more ovulatory cycles is a risk factor for endometrial cancer. Choice B is incorrect as more hormone stimulation, not less, contributes to the risk. Choice C is irrelevant as estrogen replacement therapy is not mentioned in the question. Choice D is incorrect as the duration of the menstrual cycle is not directly linked to the increased risk of endometrial cancer in these women.

Correct Answer: B

Rationale: Step 1: Elevated blood pressure (BP) is a contraindication for oral contraceptives due to increased risk of cardiovascular events. Step 2: BP of 150/86 mm Hg falls in the hypertensive range. Step 3: Reporting high BP to the healthcare provider is crucial for assessing the patient's cardiovascular risk. Step 4: Other choices are not immediate contraindications for oral contraceptives: A - Smoking cessation is a positive factor, C - Rubella vaccination can be addressed separately, D - Iron-deficiency anemia can be managed alongside oral contraceptives.

Correct Answer: C

Rationale: The correct answer is C: 46 chromatids. At the beginning of mitosis, each chromosome consists of two sister chromatids. Since the cell has 92 chromosomes, the total number of chromatids will be 92 chromosomes x 2 chromatids per chromosome = 184 chromatids. However, this number represents the total number of chromatids, not the number at the beginning of mitosis. At the beginning of mitosis, the sister chromatids are still attached, so we need to divide the total number of chromatids by 2 to get the number at the beginning of mitosis, which is 184 chromatids / 2 = 92 chromatids. Therefore, the correct answer is 46 chromatids, as each chromosome consists of two chromatids at the beginning of mitosis. Choices A, B, and D are incorrect as they do not consider the concept of sister chromatids in chromosomes during mitosis.

Correct Answer: C

Rationale: Ovoviviparity is a reproductive strategy where fertilized eggs develop within the female's body but are not nourished by the mother. Choice C is correct because birds lay fertilized eggs within a nest where they hatch, indicating the eggs were developed internally. Choice A is incorrect as honeybees do not exhibit ovoviviparity. Choice B is incorrect as sharks exhibit viviparity, where embryos develop inside the mother but are nourished directly. Choice D is incorrect as it describes placental nourishment in mammals, which is not characteristic of ovoviviparity.

Correct Answer: C

Rationale: The correct match is C: Frog - External Oviparity. Frogs lay eggs externally, and their fertilization and embryonic development occur outside the female's body. This is characteristic of oviparous animals. The other choices are incorrect because: A: Dog - Internal Oviparity, dogs give birth to live young and do not lay eggs. B: Duck - External Viviparity, ducks also give birth to live young and do not lay eggs externally. D: Cat - Internal Ovoviviparity, cats give birth to live young but retain eggs inside their body until they hatch.