BIOL:CONCEPT+INVEST.ETEXT
5th Edition
ISBN: 9781264154173
Author: Hoefnagels
Publisher: MCG
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Chapter 35, Problem 11WIO
Summary Introduction
To explain:
The route of obtaining the atoms in pregnant mother and give it to infant.
Concept introduction:
The development of the zygote to embryo involves the addition of more cells to forms tissues and organs. The development can be defined as the process of transformation of the organism during the growth process. The zygote is very small, however, after cell divisions it develops into newborn infant of about
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Which mechanism prevents an ovum from being fertilized by multiple sperm cells?
Select one:
a. When more than a single sperm cell fuses with the plasma membrane, multiple zygotes can form, leading to the conception of twins or triplets.
b. When a sperm fuses with the plasma membrane of the egg, depolarization of the membrane occurs.
c. Once a sperm penetrates the jelly-like coating of the egg, no other sperm cells can penetrate the coating.
d. The egg can only survive in the Fallopian tube for 24 hours as it does not have mitochondria to produce energy.
What is the importance of
mitosis for the embryonic
development?
Why isn't the answer epiblast and hypoblast? Doesn't the entirety of the inner cell mass contribute to cells forming the embryo?
Chapter 35 Solutions
BIOL:CONCEPT+INVEST.ETEXT
Ch. 35.1 - Prob. 1MCCh. 35.1 - Prob. 2MCCh. 35.1 - Prob. 3MCCh. 35.2 - Prob. 1MCCh. 35.2 - Prob. 2MCCh. 35.2 - Prob. 3MCCh. 35.2 - Prob. 4MCCh. 35.3 - Prob. 1MCCh. 35.3 - Prob. 2MCCh. 35.3 - How do hormones regulate the ovarian and menstrual...
Ch. 35.4 - Prob. 1MCCh. 35.4 - Prob. 2MCCh. 35.4 - Prob. 3MCCh. 35.5 - What are the events of fertilization?Ch. 35.5 - What are the relationships among the zygote,...Ch. 35.5 - What is implantation, and when does it occur?Ch. 35.5 - Prob. 4MCCh. 35.5 - Prob. 5MCCh. 35.5 - What are the events of the second and third...Ch. 35.5 - Prob. 7MCCh. 35.6 - Prob. 1MCCh. 35.6 - Prob. 2MCCh. 35.6 - Prob. 3MCCh. 35.7 - Prob. 1MCCh. 35.7 - Prob. 2MCCh. 35 - Prob. 1MCQCh. 35 - Which hormones play central roles in both male and...Ch. 35 - Prob. 3MCQCh. 35 - Why can't a fertilized polar body develop into a...Ch. 35 - Prob. 5MCQCh. 35 - Prob. 6MCQCh. 35 - What is the correct order of structures to develop...Ch. 35 - A chemical that can cause a birth defect is a a....Ch. 35 - Prob. 1WIOCh. 35 - Prob. 2WIOCh. 35 - Prob. 3WIOCh. 35 - Prob. 4WIOCh. 35 - Prob. 5WIOCh. 35 - Prob. 6WIOCh. 35 - Is each of the following cell types haploid or...Ch. 35 - Prob. 8WIOCh. 35 - Prob. 9WIOCh. 35 - What would happen if two sperm fertilized the same...Ch. 35 - Prob. 11WIOCh. 35 - Prob. 12WIOCh. 35 - Prob. 13WIOCh. 35 - Prob. 14WIOCh. 35 - Prob. 15WIOCh. 35 - Prob. 16WIOCh. 35 - Prob. 17WIOCh. 35 - Prob. 18WIOCh. 35 - Prob. 19WIOCh. 35 - Review the Survey the Landscape figure in the...Ch. 35 - Add ovulation to the concept map. What hormonal...Ch. 35 - Add the terms placenta, follicle, polar body,...
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- From what you know about embryonic development, do you think that a cell from the inner cell mass or one from the ectoderm has more developmental potential?arrow_forwardCell differentiation occurs through _______________, whereas morphogenesis involves _______________. (a) pattern formation; cell determination (b) cell division; cell expansion (c) cell expansion; pattern formation (d) cell determination; cell division (e) cell determination; pattern formationarrow_forwardAs a sperm cell finally approaches its final target, its acrosome becomes activated. The acrosome is a specialized organelle found in the cell’s head region and activation results in the exocytosis of several types of proteolytic enzymes. Name 2 specific proteins you might expect the enzymes released by the acrosome to breakdown. What purpose does this play in the fertilization of the egg? Explain your reasoning.arrow_forward
- What exactly is the zona pellucida? Does it make up the plasma membrane, vitelline layer, AND jelly layer of the egg? So it's technically like the extracellular matrix of the egg cell?arrow_forwardTobacco smokers (and those exposed to tobacco smoke) are at greater risk of an ectopic (tubal) pregnancy. Based on your understanding of the structures of the cytoskeleton, what is the best explanation? Tobacco interferes with the transfer of oxygen to the uterus, thereby forcing the zygote to implant in a fallopian tube. Tobacco smokers tend to get pregnant when they are younger. Tobacco interferes with the functioning of the flagella propelling sperm. Tobacco interferes with the sweeping motion of cilia that aids in the movement of the egg toward the uterus.arrow_forwardConsider a human zygote, how many cells will be formed before 16th round of cell division?arrow_forward
- You have an embryo in the eight-cell stage that shows radial and indeterminate cleavage. What would happen if you separated the cells of this embryo and placed them each into tissue culture media? Each cell may continue development, but only into a nonviable embryo that lacks many parts. Each cell may develop into a full-sized, normal embryo. All eight cells would die immediately. Each cell may deyelop into a smaller-than-average, but otherwise normal, embryo.arrow_forwardAfter fertilization a developing embryos goes through several changes. At about 2-3 days, what is the embryo referred to as?arrow_forwardIn human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and one cell that becomes a spermatogonium. (a) Draw four rounds of mitosis for a stem cell, and label the daughter cells. (b) For one spermatogonium, draw the cells it would produce from one round of mitosis followed by meiosis. Label the cells, and label mitosis and meiosis. (c) Explain what would happen if stem cells divided like spermatogonia.arrow_forward
- Mitosis differs from meiosis in the following ways EXCEPT:(a) Mitosis results in a full complement of chromosomesin two cells, whereas meiosis results in four cells havinghalf the number of chromosomes.(b) In mitosis, all chromosomes are replicated, whereas inmeiosis, only half are replicated.(c) Mitosis only occurs in somatic or body cells, whereasmeiosis occurs in production of gametes or sex cells.(d) None of the above.(e) a and c onlyarrow_forwardMost mammals, including humans have alecithal type of egg, which means that there is negligible or no amount of stored yolk in its cytoplasm. How would a developing mammalian embryo get its nourishment?arrow_forwardTrue or false all cells of the body go through mitosis more or less constantly from conception until death?arrow_forward
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