The process of spermatogenesis in the male testes is stimulated by:
A. Prolactin
B. Follicle-stimulating hormone (FSH)
C. Oxytocin
D. Estrogen
Answer: Option B
Solution (By JKExamLibrary)
FSH, released from the anterior pituitary, stimulates Sertoli cells in the seminiferous tubules to support spermatogenesis (production of sperm). Luteinizing hormone (LH) stimulates Leydig cells to produce testosterone, which is also necessary for spermatogenesis. Estrogen is female hormone, prolactin for milk, oxytocin for uterine contraction.
Explanation:
A gene is a segment of DNA that codes for a functional product (protein or RNA) and is the basic unit of heredity. It determines traits. Chromosomes are structures containing many genes. DNA is the genetic material, and nucleotides are the building blocks. Genes are passed from parents to offspring.
Explanation:
Lactase hydrolyzes lactose (milk sugar) into glucose and galactose. Lactose intolerance is due to lactase deficiency. Sucrase acts on sucrose, maltase on maltose.
No comments yet. Be the first to start the discussion!