What is Life? A Guide to Biology with Physiology
3rd Edition
ISBN: 9781464157745
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 25, Problem 7MC
Summary Introduction
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The egg completes only meiosis I when it is released from the ovary.
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Give 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 a major difference between spermatogenesis and oogenesis?
a. Spermatogenesis involves meiosis, and oogenesis involves mitosis.
b. Spermatogenesis is continuous, but oogenesis is variable.
c. Spermatogenesis produces fewer gametes per precursor cell than oogenesis.
d. All of these are significant differences between oogenesis and spermatogenesis.
Which of the following statements about oocytes and ovulation is correct? a. The production of primary oocytes continues in women from the onset of puberty until the onset of menopause. b. Meiotic divisions are complete at the time of ovulation. c. At ovulation, the structure released from the follicle includes a secondary oocyte and polar body. d. All of these statements are correct
Chapter 25 Solutions
What is Life? A Guide to Biology with Physiology
Ch. 25 - Prob. 1SACh. 25 - Prob. 2SACh. 25 - Prob. 3SACh. 25 - Prob. 4SACh. 25 - Prob. 5SACh. 25 - Prob. 6SACh. 25 - Prob. 7SACh. 25 - Prob. 8SACh. 25 - Prob. 9SACh. 25 - Prob. 10SA
Ch. 25 - Prob. 11SACh. 25 - Prob. 12SACh. 25 - Prob. 13SACh. 25 - Prob. 14SACh. 25 - Prob. 15SACh. 25 - Prob. 1MCCh. 25 - Prob. 2MCCh. 25 - Prob. 3MCCh. 25 - Prob. 4MCCh. 25 - Prob. 5MCCh. 25 - Prob. 6MCCh. 25 - Prob. 7MCCh. 25 - Prob. 8MCCh. 25 - Prob. 9MCCh. 25 - Prob. 10MCCh. 25 - Prob. 11MCCh. 25 - Prob. 12MCCh. 25 - Prob. 13MCCh. 25 - Prob. 14MCCh. 25 - Prob. 15MC
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- Spermatocytes enter meiosis: A. Prior to the birth of the male infant. B. Withint daysof the birth of the male infant. C. When the male reaches puberty.arrow_forwardWhich of the following stages of the fertilization process stimulates completion of meiosis II in the oocyte’s nucleus? A. The sperm nucleus and egg nucleus combine to form the genetic material of the zygote B. Sperm release enzymes to digest the protein layer of the secondary oocyte C. The entry of a sperm into the secondary oocyte D. The swimming of sperm from the vagina, through the uterus, and up to an oviductarrow_forwardWhich of the following statements is/are true? A. Spermatogenesis is an example of asymmetric cell division. B. The formation of a mature egg occurs through symmetric cell division. C. Spermatogenesis and oogenesis are both examples of asymmetric cell division. D. Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.arrow_forward
- a. The ovaries produce secondary the female sex cells. b. Stem cells, called divide by to produce primary each form part of a c. At the onset of puberty, tens of thousands of ovaries. Between menarche and menopause, each primordial follicle develops into a in the and its primary oocyte completes d. Some primary oocytes become 23-chromosome cells that begin then pause. secondary oocyte is released into is completed when e. Each month, the uterine tube. the oocyte isarrow_forwardChoose the best Polar bodies are produced duringa. DNA replication. d. oogenesis.b. mitosis. e. None of these are correct.c. spermatogenesis.arrow_forwardWhy is a second polar body expelled after fertilisation (select one) a. The oocyte must recativate the incomplete meiosis before fusing with the sperm b. To remove excess cytoplasm c. Before fusion with the sperm it must complete mitosis d. The fertilised oocyte is not a haploid cell until it expels the sperms mitochondriaarrow_forward
- Which of the following statements does NOT correctly describe the similarities and differences between male and female reproductive systems? Select one: a. Millions of mature sperm are produced on a daily basis, whereas single mature ovum is released every 28 days. b. Meiosis is completed in eggs after fertilization begins, whereas a mature sperm has completed meiosis prior to fertilization. c. Eggs and sperm contain exactly half of the genetic material of a normal somatic cell. Many zygotes with an abnormal number of genetic material often do not successfully implant. d. Eggs and sperm can survive for 3 to 5 days in the Fallopian tubes.arrow_forwardThe final outcome of meiosis in the ovaries results in: a. Three functional gametes b. the formation of two identical daughter cells c. two functional gametes d. four functional gametes e. one functional gametearrow_forwardWhich of the following is UNTRUE with regards to human gametes and their production: A. Female gametes complete Meiosis II only after fertilization B. Polar bodies are the result of asymmetric cytokinesis C. Fetal oocytes are arrested in metaphase II D. Cells fated to become eggs and sperm undergo both mitosis and meiosis E. Meiosis in male yields 4 haploid productsarrow_forward
- Which of the following does NOT aid the sperm in fertilization? a. increased mitochondria b. flageullum development c. cytoplasmic bridge d. hyaluronidase and protease e. acrosomesarrow_forwardAt fertilization, a sperm contributes a. a diploid nucleus. b. mRNAs. c. a centrosome. d. nutrients.arrow_forwardCleavage... A. Is a developmental stage consisting of a cell layer surrounding a fluid-filled space B. Is a specialized form of cell division that partitions the cytoplasm of a fertilized egg C. Refers to the fusion of haploid gametes to give a diploid zygote D. Produces an embryo with either two or three distinct cell layers E. None of the abovearrow_forward
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