Four spermatozoa arise from each:- a. primordial germ cell. b. type A spermatogonium. c. type B spermatogonium. d. secondary spermatocyte. e. spermatid
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Four spermatozoa arise from each:- a. primordial germ cell. b. type A spermatogonium. c. type B spermatogonium. d. secondary spermatocyte. e. spermatid
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- Which of these has the largest amount of DNA? a. Spermatogonial cells b. Primary spermatocyte c. Secondary spermmatocyte d. Sertoli cells e. First polar bodySpermatogonia divide by mitosis to form a new spermatogonium and a. a sperm. b. spermatids. c. a primary spermatocyte. d. zygotes.Spermatogonia divide by mitosis to form a new spermatogonium and a. a sperm. b. spermatids.c. a primary spermatocyte. d. zygotes. ņ
- Which of the following statements about spermatogenesis is true? Select one: A. The process starts after each ejaculation. B. Maturation of sperm takes place in the seminal vesicles. C. The process is initiated by primary spermatocytes. D. It is controlled by FSH and testosterone. E. The complete process takes about 28 days. O O OWhich of the following structure is controlling the rate of spermatogenesis? a.Sertoli cells b.Leydig cells c.Spermatogonium d.SpermatidsSperm cells originally come from a diploid cell called a… Group of answer choices A. secondary oocyte B. primary spermatocyte C. gonadal cell D. acrosome E. seminiferous cell
- Help me with both of this pleaseeeee Sperm capacitation differs from fertilization because capacitation is the: Group of answer choices A. ) change from the spermatid to a mobile sperm in epididymis B.) entry of the sperm into a receptive oocyte C.) loss of the sperm's acrosome covering to release enzymes D. ) depolarization of the oocyte membrane by the sperm Which of the following hormones is NOT released by the placenta? Group of answer choices A. ) relaxin b.) oxytocin c.) human chorionic thryotropin (hCT) d. ) lactogen (hPL)Arrange the following stages into the correct sequence: 1. spermatid 2. spermatogonium 3. sperm 4. secondary spermatocyte 5. primary spermatocyte (a) 2, 1, 3, 4, 5 (b) 5, 1, 3, 4, 2 (c) 1, 3, 4, 2, 5 (d) 2, 5, 4, 1, 3 (e) 1, 4, 3, 2, 5Give the significance of the following events, structures, or processes in spermatogenesis and oogenesis: a. lampbrush chromosome b. Rough Endoplasmic Reticulum vesicles c. mitochondrial clouds d. oogenic growth e. gametogenesis
- Which of the following is the correct sequence for the flow of spermatozoa out of the testis? 1. rete testis 2. straight tubules (tubuli recti) 3. seminiferous tubule 4. efferent duct (ductule) 5. epididymis Choose the right answer (A) 5, 4, 3, 2, 1 (B) 3, 1, 2, 4, 5 (C) 3, 2, 1, 4, 5 (D) 3, 4, 1, 2, 5One day while walking across campus, you see a female butterfly laying fertilized eggs, as shown in the image: 1. What type of ovarioles would the adult female butterfly have (hint: remember the Order of butterflies)? a. Panoistic ovarioles b. Plasmatocytic ovarioles c. Polytrophic ovarioles d. Collaterial ovarioles e. Telotrophic ovarioles 2. Which combination of mechanisms would the butterfly use to supply vitellogenins/maternal mRNAs to the developing oocytes? a. Follicular epithelial cells/trophocytes contained within the follicle b. Apical cells of germarium/nutritive cords c. Follicular epithelial cells/nucleus of the oocyte d. Prefollicular tissue in germarium/trophoocytes that remain in germarium 3. Which statement is correct with respect to the hormonal regulation of the development of the ovaries and vitellogenesis in the adult female butterfly? (Hint: the processes are the same as in a female mosquito.) a.…Which of the following cells is NOT a male gamete? Select one: a. Sertoli cell b. Mature sperm c. Secondary spermatocyte d. Spermatozoon e. Spermatid