BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 51, Problem 2A
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.
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Which 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.
Which 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 oviduct
Why is a second polar body expelled after fertilisation? a) To remove excess cytoplasm b) Because the oocyte must reactivate the incomplete meiosis before fusing with the sperm c) Before fusion with the sperm it must complete mitosis d) The fertilised oocyte is not a haploid cell until it expels the sperms mitochondria
Chapter 51 Solutions
BIOLOGY
Ch. 51.1 - Prob. 1LOCh. 51.1 - Prob. 2LOCh. 51.1 - Prob. 3LOCh. 51.2 - Prob. 1LOCh. 51.2 - Prob. 2LOCh. 51.3 - Prob. 1LOCh. 51.3 - Prob. 2LOCh. 51.3 - Prob. 3LOCh. 51.4 - Prob. 1LOCh. 51.4 - Explain ovulation and the female reproductive...
Ch. 51.4 - Prob. 3LOCh. 51.5 - Prob. 1LOCh. 51.5 - Describe causes of infertility.Ch. 51 - Prob. 1DACh. 51 - Why might it be adaptive for an individual to be...Ch. 51 - Prob. 2IQCh. 51 - Why do you think the brain is affected when the...Ch. 51 - You have discovered a new organism living in tide...Ch. 51 - Prob. 2UCh. 51 - Prob. 3UCh. 51 - Which of the following structures is the site of...Ch. 51 - FSH and LH are produced by the a. ovaries. b....Ch. 51 - Prob. 6UCh. 51 - Mutations that affect proteins in the acrosome...Ch. 51 - In humans, fertilization occurs in the____, and...Ch. 51 - The testicles of male mammals are suspended in the...Ch. 51 - Prob. 1ACh. 51 - Which of the following is a major difference...Ch. 51 - Prob. 3ACh. 51 - Internal and external fertilization differ in that...Ch. 51 - Prob. 1SCh. 51 - Why do you think that amphibians and many fish...Ch. 51 - How are the functions of FSH and LH similar in...Ch. 51 - Prob. 4SCh. 51 - Why are all parthenogenic parents female?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- How does the production of sperm differ from the production of eggs? a. Sperm production involves meiosis, whereas egg production involves only mitosis. b. Meiosis during sperm production produces four sperm cells, whereas meiosis during egg production produces only one functional egg cell. c. Sperm are haploid, whereas eggs are diploid. d. Sperm production begins during fetal development, whereas the meiotic process that begins egg production doesn’t begin until pubertyarrow_forwardSpermatogenesis and oogenesis both involve meiosis but differ in significant ways. One of those differences include what? A) Cytokinesis is unequal in spermatogenesis B) Production of sperm is continuous; in humans, and the number of future egg cells is set at birth C) Oogenesis is an uninterrupted sequence, but there are long delays in spermatogenesis D) All of the abovearrow_forwardWhich of the following structure is controlling the rate of spermatogenesis? a.Sertoli cells b.Leydig cells c.Spermatogonium d.Spermatidsarrow_forward
- Which of the following statements is incorrect? a) Sperm occur as X- or Y-chromosome bearing gametes b) The sex of an individual can not be determined from morphology early in embryonic development c) It is the ovum which determines the sex of the newly developing embryo d) X-chromosome bearing sperm are slightly larger than Y-chromosome bearing spermarrow_forwardDuring oogenesis the cell that is fertilized by a sperm to become an egg is: A primary spermatocyte B secondary oocyte C primary oocyte D secondary spermatocytearrow_forwardWhich of the following statements correctly describes the function of the Sertoli cells? a. Stimulate spermatogenesis b. Support the developing sperm cells c. Control the overproduction of testosterone d. Store testosterone in the testesarrow_forward
- Compare spermatogenesis and oogenesis as to timing of the processes, and the number and type of cells finally produced.arrow_forwardAfter fertilisation, the resulting cell which gives rise to a new individual is the: (a) embryo (b) ovum (c) foetus (d) zygotearrow_forwardIn a possible future scenario, male fertility drops to zero, but, luckily, scientists develop a way for women to pro-duce babies by virgin birth. Meiocytes are converted di-rectly (without undergoing meiosis) into zygotes, which implant in the usual way. What would be the short- andlong-term effects in such a society?arrow_forward
- In animals, a key difference between spermatogenesis andoogenesis is thata. only oogenesis involves meiosis.b. only spermatogenesis involves meiosis.c. spermatogenesis produces four sperm, whereas oogenesisproduces only one egg cell.d. None of the above describes a difference between the twoprocesses.arrow_forwardWhich of the following statements is incorrect?a. The placenta secretes hormones such as progesterone, hCG, and estrogen.b. Embryonic tissue and maternal tissue forms the placenta.c. The chorion supplies nutrients to the embryo by diffusion.d. The umbilical cord is formed by one artery and two veinsarrow_forwardAt puberty, the testes contain a finite number of cells and producean enormous number of sperm cells during the life span of a male.Explain why testes do not run out of spermatogonial cellsarrow_forward
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