The main function of the enzyme lipase isto: A-Synthesize fat from glycerol and fatty acids. B-Emulsify fat in the small intestine. D- Breakdown fat into fatty acids and cholesterol. C- Hydrolyze fat into glycerol and fatty acids..... E-Breakdown of the lipid cholesterol into fatty acids. Compared to gametes, diploid cells contain: A-Half the number of chromosomes. B-Twice the number of chromosomes. C- Half the chromosomes from the male and the other half from the female. D-More DNA.

The main function of the enzyme lipase isto: A-Synthesize fat from glycerol and fatty acids. B-Emulsify fat in the small intestine. D- Breakdown fat into fatty acids and cholesterol. C- Hydrolyze fat into glycerol and fatty acids..... E-Breakdown of the lipid cholesterol into fatty acids. Compared to gametes, diploid cells contain: A-Half the number of chromosomes. B-Twice the number of chromosomes. C- Half the chromosomes from the male and the other half from the female. D-More DNA.

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter10: Cell Division And Mitosis

Section: Chapter Questions

Problem 1ITD: Biologists have long been interested in the effects of radiation on cells. In one experiment,...

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One day while walking across campus, you see a female butterfly laying fertilized eggs, as shown in the image below: 1. When the female butterfly’s eggs are fertilized, the fusion (2N) nucleus will divide repeatedly giving rise to cleavage nuclei, which: a. can become trophocytes that migrate into the germarium and connect to the developing embryo by nutritive cords. b. can migrate to the periplasm and become cleavage cells that ultimately give rise to the germ band and the serosa. c. can migrate to the peripheral cytoplasm and become germ cells, which eventually move into the forming gonads and become oogonia or spermatogonia. d. can remain in the yolk and become vitellophages that digest the yolk and make nutrients available to the forming embryo. e. only b and c f. only a and d g. all except a h. all except d 2. In the mature, unfertilized egg of the adult female butterfly: a. bicoid mRNAs will congregate at the end of the…
As 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.
is when an egg is released from the ovary. This typically occurs once a month in females. occurs when the egg is not fertilized. It involves the egg being broken down by enzymes in the uterus, as well as the egg and the uterine lining being expelled from the body. occurs when male and female sex cells unite. Fertilization produces a which eventually turns into an embryo, and later into a fetus, is a word used to describe cell division in a zygote. The zygote undergoes cleavage/cell division to form a hollow ball of cells called a blastocyst. or After the zygote becomes a blastula, the cells keep dividing into a ball of cells that is composed of three germ layers. This ball of cells composed of three germs layers is called a is the process by which cells develop in different ways to perform different functions. Once it has begun, tissues and organs develop rapidly from the three germ layers of the gastrula. About 8 weeks after fertilization, the major organs have begun to develop and…
Right after the fertilization process, the zygote polarizes first its membrane and then its cytoplasm. Please draw a diagram identifying the main molecular events that induce the membrane polarization of the zygote.
The somatic cell of a sheep contains 54 chromosomes54 chromosomes (2?=54).(2⁢n=54). How many chromosomes and how many DNA molecules would the primary oocyte of this sheep have? chromosomes: DNA molecules:
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 only
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.
Some men are unable to become fathers because their spermatids do not mature into sperm. Injection of their spermatids into their partners’ secondary oocytes sometimes results in conception. Men have fathered healthy babies this way. Why would this procedure work with spermatids, but not with primary spermatocytes?
Biologists have long been interested in the effects of radiation on cells. In one experiment, researchers examined the effect of radium on mitosis of chick embryo cells growing in culture. A population of experimental cells was examined under the microscope for the number of cells in telophase (as a measure of mitosis occurring) before, during, and after exposure to radium. The results are shown in the Figure. What is the effect of radium exposure on mitosis? Source: R. G. Canti and M. Donaldson. 1926. The effect of radium on mitosis in vitro. Proceedings of the Royal Society of London, Series B, Containing Papers of a Biological Character 100:413419.
Mitosis occurs in which of the following situations? (select ALL that apply) A. Yeast cells reproducing asexually B. Certain plants that reproduce asexually C. Human adults who have stopped growing taller. D. The production of gamete cells E. Young multicellular organisms growing larger (normal growth) F. The development of a zygote after fertilization has occurred.
1. The diagram in Figure 1 shows a section through the mammalian testis. With reference to this diagram answer the following questions: Hormone secreting cells A FIGURE 1 What percentage of each of the following types of cells would you expect to contain an X chromosome. Give a REASON for your answer in each case. i) type cell A ii) type cell B Name the cell type labelled B which under goes mitosis. State the importance of mitosis in a mature testis. State TWO ways in which cell division results in cell C being genetically different from one another. The graph in Figure 2 shows the effect of light on the period of oestrus in two groups of female sheep. The females in the control group were subjected to the normal seasonal variation in day length. Partially through the first year of the experiment, sheep in the experimental group were subjected to reversed day-length cycle. The period of oestrus of each group of sheep is shown in solid bands above the graph (Figure 2).
[a] are produced through Giemsa staining and allow for the production of a cytogenetic map