BIOLOGY (LL)
5th Edition
ISBN: 9781264115495
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 20, Problem 9TY
An embryonic stem cell that can give rise to any type of cell of an adult organism but cannot produce an entire, intact individual is called
- a. totipotent.
- b. pluripotent.
- c. multipotent.
- d. unipotent.
- e. antipotent.
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Early in their development, tunicates (sea squirts) have 8 cells. Ultimately these 8 cells will give rise to all the tissue types in their bodies. Design and explain an experiment through which you could determine whether the specification of these 8 cells to specific body parts is cell autonomous or conditional.
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a. cytokinesis
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Chapter 20 Solutions
BIOLOGY (LL)
Ch. 20.1 - 20.1 General Themes in Development Concept Check:...Ch. 20.1 - Prob. 2CCCh. 20.1 - Prob. 1CSCh. 20.2 - Development in Animals I: Pattern Formation...Ch. 20.2 - Development in Animals I: Pattern Formation...Ch. 20.2 - Prob. 3CCCh. 20.2 - Core Skill: Modeling The goal of this modeling...Ch. 20.2 - Development in Animals I: Pattern Formation Core...Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.3 - Development in Animals II: Cell Differentiation...
Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.3 - Development in Animals II: Cell Differentiation...Ch. 20.4 - Development in Plants Concept Check: Where are...Ch. 20.4 - Prob. 2CCCh. 20 - The process whereby a cells morphology and...Ch. 20 - Prob. 2TYCh. 20 - Positional information is important in determining...Ch. 20 - Morphogens are a. molecules that disrupt normal...Ch. 20 - Prob. 5TYCh. 20 - Arrange the following phases of pattern formation...Ch. 20 - Prob. 7TYCh. 20 - Which of the following genes do not play a role in...Ch. 20 - An embryonic stem cell that can give rise to any...Ch. 20 - Prob. 10TYCh. 20 - Prob. 1CQCh. 20 - The MyoD gene in mammals plays a role in muscle...Ch. 20 - Prob. 3CQCh. 20 - Prob. 1COQCh. 20 - Is it possible for a phenotypically normal female...
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- Which of the following statements about potency is correct? O A. Committed progenitors have more potency than totipotent stem cells. B. Multipotent stem cells have higher potency than pluripotent stem cells. C. Unipotent stem cells are different from normal somatic cells because they can self-renew. D. Adult tissues have many totipotent stem cells in their niche.arrow_forwardWhich of the following are the level of biological structure at which stem cells play a part? macromolecular level cellular/ organelle levels tissue/ organ level organismal level all of the above none of the above ** select more than one if necessary, then for part 2, choose which of the following are NOT a level of biological structure?arrow_forwardThe role of p53 in normal cells is toa. create cancer-blocking mutations.b. trigger unrestrained cell division.c. detect damaged DNA.d. splice exons together in the correct sequence.arrow_forward
- Which of the following cell types would you expect would grow and divide continuously if given sufficient nutrients and mitogens (select all that apply)? A. Carcinoma cells from a liver biopsy B. Embryonic Stem Cells C. Normal human liver cells D. HeLa Cells E. Brain cells from micearrow_forwardWhich of the following statements is true regarding cell cycle regulators? a. Cyclins determine which proteins each Cdks will act on. b. Cdks check the DNA for damage and repairs it. c. Cyclin binding to Cdks will result to Cdk inactivation. d. Cyclin levels remain constant through the cell cycle.arrow_forwardBelow are three statements - two of which are truths and one is a lie. Which of the following statements is a lie? a. Rough ER and smooth ER mainly function for protein synthesis. b. There are two types of secretory activities of a cell. c. A cell that makes steroid hormones has a high concentration of smooth endoplasmic reticulum.arrow_forward
- Which of the following is a characteristic of a cell undergoing cellular senescence? a.Doubling in physical size b.Production of SASPs c.Atypically low NGF1-A levels d.Abnormally high rate of proliferationarrow_forwardBobby is still a fetus, but his brain is developing very quickly. In fact, there are newly developed cells that are pushing previously developed cells out of the proliferative zones. What is this process called? a. Synaptic pruning. b. Mitosis. c. Passive displacement. d. Active cell migration.arrow_forwardWhich of the following is not true regarding cytokinesis?* A.Simultaneously happen with the telophase. B.It is the division of cytoplasm. C.The same with the interkinesis. D.Leads to the formation of cleavage furrow.arrow_forward
- Can you draw 4th cell division of the adult stem cells. 1st and 2nd are symmetrically. 3rd and 4th are asymmetrically. What kind of cell is the product at the 4th division? Explain your reasoningarrow_forwardI am confused about how stem cell transplants works. If you put a semi differentiated tadpole nucleus in a denucleated egg cell, it’ll develop into a fully formed tadpole, but if you put a fully differentiated tadpole nucleus, it won’t (because the genes have already been expressed in a way where the cytoplasmic determinants cannot operate to the fullest). Then how come in stem cell transplants, you use adult nucleuses that are already developed and transplant them into the denucleated egg cells?arrow_forwardFigure C indicates what stage of cell division? В. А. C. D. Е. a. Prometaphase b. Cytokinesis C c. Metaphasearrow_forward
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