NEET Zoology Human Reproduction The Male Reproductive System MCQs

A male patient presents with infertility and upon examination, it's found that he has immotile sperms lacking a functional flagellum. Genetic analysis reveals a mutation affecting a specific protein crucial for flagellar structure. Which of the following proteins is MOST likely affected?

Which specific cell type within the testes is primarily responsible for the conversion of testosterone to dihydrotestosterone (DHT) and what enzyme facilitates this conversion?

A male patient presents with infertility and upon examination, it is found that he has immotile sperms. Genetic analysis reveals a mutation affecting a specific protein crucial for dynein arm function within the sperm flagella. Which of the following proteins is MOST likely affected by this mutation?

During spermatogenesis, a critical step involves the conversion of spermatids into spermatozoa. This intricate process, known as spermiogenesis, includes several key morphological changes. Which of the following is NOT a characteristic feature of spermiogenesis?

A rare genetic disorder affects the Sertoli cells within the seminiferous tubules, specifically impairing their ability to produce Androgen Binding Protein (ABP). Which of the following would be the MOST likely direct consequence of this disorder?

A researcher is studying the hormonal control of spermatogenesis. He administers a drug that selectively blocks the receptors for a specific hormone in the testes. As a result, he observes a significant decrease in the rate of spermatogenesis, but testosterone levels remain normal. Which hormone's receptors are MOST likely being blocked by the drug?

Which of the following cells in the testes is responsible for the production of testosterone?

The function of the epididymis is to:

Which accessory gland contributes the largest volume to the seminal plasma?

The acrosome of a sperm contains: