Nokea
After fertilization, cell division occurs through a process of:
- A. Binary fission
- B. Meiosis
- C. Budding
- D. Mitosis
Correct Answer: D
Rationale: After fertilization, the zygote undergoes cell division through the process of mitosis. Mitosis is the type of cell division that results in two daughter cells with the same number of chromosomes as the parent cell. Choice A, binary fission, is a form of asexual reproduction in prokaryotes, not the process that occurs after fertilization in multicellular organisms. Choice B, meiosis, is a type of cell division that leads to the formation of gametes with half the number of chromosomes, not the process that occurs after fertilization. Choice C, budding, is a form of asexual reproduction seen in some organisms like yeast, but it is not the process of cell division after fertilization.
You may also like to solve these questions
Which of the following data should not be included in the identification data of gynecological history?
- A. Parity
- B. Lost normal menstrual period
- C. EDD (Expected date of delivery)
- D. Last delivery
Correct Answer: C
Rationale: The correct answer is C: EDD (Expected date of delivery). In a gynecological history, EDD is not typically included as it pertains more to obstetric history. Parity, lost normal menstrual period, and last delivery are important components of gynecological history. Parity refers to the number of times a woman has given birth to a fetus past 20 weeks' gestation. Lost normal menstrual period can provide insight into potential gynecological issues, while last delivery details the most recent childbirth experience. Therefore, EDD is the outlier in this context.
Which statement accurately describes the female pelvis?
- A. Gynaecoid pelvis has a wedge-shaped inlet
- B. Platypelloid pelvis has an oval inlet
- C. Anthropoid pelvis has a long narrow oval inlet
- D. Android pelvis is wedge-shaped
Correct Answer: B
Rationale: The correct answer is B because the Platypelloid pelvis indeed has an oval inlet. Gynaecoid pelvis, not mentioned in the choices, has a round inlet. Anthropoid pelvis has a long, narrow oval inlet, which makes choice C incorrect. Choice D is incorrect as the Android pelvis is actually heart-shaped with a narrowed inlet.
What forms the vaginal lining?
- A. Squamous epithelium
- B. Stratified epithelium
- C. Vascular connective tissue
- D. Muscle coat
Correct Answer: A
Rationale: The vaginal lining is primarily formed by squamous epithelium. Squamous epithelium is the correct answer because it is the type of epithelium that lines the vaginal canal. Stratified epithelium consists of multiple layers and is not the primary type found in the vaginal lining. Vascular connective tissue and muscle coat are not the main components of the vaginal lining, making them incorrect choices.
Which contraceptive option suppresses sperm motility and inhibits the implantation of the blastocyst?
- A. Copper-T
- B. Diaphragm
- C. Contraceptive pills
- D. Condom
Correct Answer: A
Rationale: The correct answer is A, Copper-T. Copper-T is an intrauterine device that releases copper ions, which suppress sperm motility and inhibit the implantation of the blastocyst. This method mainly works by preventing fertilization and, if fertilization occurs, by making the endometrium less receptive to implantation. Choices B, C, and D are incorrect. The diaphragm is a barrier method that prevents sperm from reaching the cervix; contraceptive pills mainly work by suppressing ovulation and altering cervical mucus to prevent sperm from reaching the egg; condoms are barrier methods that prevent sperm from entering the vagina.
How does human sperm move?
- A. Flagella
- B. Cilia
- C. Neutrophils
- D. None of the above
Correct Answer: A
Rationale: Human sperm moves using flagella, which are whip-like structures that aid in propulsion. Flagella are tail-like structures found in sperm cells and help them swim towards the egg for fertilization. Cilia are shorter, hair-like structures that are not involved in the movement of sperm. Neutrophils are a type of white blood cell involved in the immune response and are not related to sperm locomotion.