Nokea
Identify the CORRECT strategy to achieve external fertilization.
- A. Female organism will modify its body parts to receive male gametes.
- B. Fertilization must occur at night to avoid predators.
- C. Eggs and sperm must be shed simultaneously into water.
- D. The release of eggs is more frequent than the release of sperm.
Correct Answer: C
Rationale: The correct strategy for external fertilization is to have eggs and sperm shed simultaneously into water. This allows the gametes to meet and fertilize outside of the organism's body. This method is effective in aquatic environments where the chances of gametes coming into contact are increased. Choice A is incorrect as it describes internal fertilization. Choice B is irrelevant to the process of external fertilization. Choice D is incorrect as the frequency of egg and sperm release does not determine the success of external fertilization.
You may also like to solve these questions
The child's sex is determined by:
- A. the type of the spermatozoon that fecundates the ovule;
- B. the type of the fecundated ovule;
- C. the sex chromosome of the ovule;
- D. the sex chromosome of the spermatozoon
Correct Answer: D
Rationale: The correct answer is D because the sex of the child is determined by the sex chromosome carried by the spermatozoon that fertilizes the ovule. Sperm carries either an X or a Y chromosome, determining if the child will be male (XY) or female (XX). Choices A and B are incorrect because the type of spermatozoon or ovule does not solely determine the child's sex. Choice C is incorrect as well because the sex chromosome of the ovule alone does not determine the child's sex.
Which of the following statements about peptide or protein hormones is usually true?
- A. They have longer half-lives than steroid hormones
- B. They have receptors on the cell membrane
- C. They have a slower onset of action than both steroid and thyroid hormones
- D. They are not stored in endocrine-producing glands
Correct Answer: B
Rationale: The correct answer is B: Peptide or protein hormones have receptors on the cell membrane. These hormones are typically large molecules that cannot pass through the cell membrane, so they bind to receptors on the cell surface to initiate signal transduction pathways. This allows them to quickly and effectively communicate with target cells.
A: They do not have longer half-lives than steroid hormones. Peptide hormones are usually rapidly degraded compared to steroid hormones.
C: They do not have a slower onset of action than steroid and thyroid hormones. Peptide hormones can have rapid onset of action due to their signaling pathways.
D: They can be stored in endocrine-producing glands, such as insulin being stored in pancreatic beta cells.
What is not a true statement concerning the vagina?
- A. The vagina serves as the birth canal.
- B. The distal end of the vagina is partially enclosed by the hymen.
- C. The vagina is the female organ of copulation.
- D. The innermost lining of the vagina sloughs off periodically.
Correct Answer: D
Rationale: The correct answer is D because the innermost lining of the vagina does not slough off periodically like the uterine lining does during menstruation. The vaginal lining is composed of stratified squamous epithelium that does not undergo the shedding process seen in the endometrium. This is important for maintaining the integrity and functionality of the vagina. Choices A, B, and C are true statements about the vagina. A: The vagina serves as the birth canal. B: The distal end of the vagina is partially enclosed by the hymen. C: The vagina is the female organ of copulation.
A nurse is called to the playground near her house in relation to an adolescent who experienced intense pain in his testicle after riding his bike. The nurse suspects which of the following problems has occurred?
- A. Torsion of the spermatic cord
- B. Cryptorchidism
- C. Phimosis
- D. Spermatocele
Correct Answer: A
Rationale: Testicular torsion presents with sudden, severe pain and requires immediate medical attention.
Which of the following nursing interventions are required for a client undergoing antibiotic treatment for epididymitis and orchitis?
- A. Use an alcohol rub to keep the scrotum dry.
- B. Apply a skin cream.
- C. Elevate the scrotum to relieve the pain.
- D. Limit alcohol intake to 2 drinks per week.
Correct Answer: C
Rationale: Elevating the scrotum helps alleviate pain and swelling.