Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Chapter 19, Problem 2U
Summary Introduction
Introduction:
Determination is the process by which a cell becomes committed to get differentiated. A cell can become determined in two ways: either with the help of cytoplasmic determinants or via cell-to-cell contact.
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Positional information may provide a cue for a cell to
a. divide.
b. migrate.
c. differentiate.
d. undergo apoptosis.
e. do any of the above.
The end result of mitosis and cytokinesis is
A) two cells, each with half the number of chromosomes as the mother cell
B) three cells, one of which is twice the size of the other two
C) two cells identical in size and genetic material
D) two cells identical in genetic material, but one is smaller than the other
Prophase is the stage of mitosis characterized by the
a. physical seperation of sister chromatids
b. appearance of visible chromosomes
c. occurrence of cytokinesis
d. alignment of chromosomes at center of cell
Chapter 19 Solutions
Biology
Ch. 19 - During development, cells become a. differentiated...Ch. 19 - Prob. 2UCh. 19 - Prob. 3UCh. 19 - Prob. 4UCh. 19 - Plant meristems a. are only present during...Ch. 19 - Prob. 6UCh. 19 - The process of nuclear reprogramming a. is a...Ch. 19 - What is the common theme in cell determination by...Ch. 19 - The process of reproductive cloning a. shows that...Ch. 19 - Prob. 3A
Ch. 19 - Prob. 4ACh. 19 - The genes that encode the morphogen gradients in...Ch. 19 - What would be the likely result of a mutation of...Ch. 19 - MADS-box, and Hox genes are a. found only in...Ch. 19 - The fate map for C. elegans (refer to figure 19.3)...Ch. 19 - Prob. 2SCh. 19 - You have generated a set of mutant embryonic mouse...Ch. 19 - Assume you have the factors in hand necessary to...
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- The cell cycle control system is a cycling set of molecules in the cell that triggers and coordinates key events in the cell cycle. This is all controlled by growth factors. a) Identify the major checkpoints in a cell and its function. b)Explain the role of the growth factor.arrow_forwardThis begins early in the telophase and continues after the nucleus has formed in the daughter cells. a. cytokinesis b. interphase c. apoptosis d. differentiationarrow_forwardThe majority of the cells undergo selective activation of the DNA which would lead to cells developing specialized structures and specialized features, a process known as a. differentiation b. apoptosis c. cell division d. cytokinesisarrow_forward
- You remove cyclin from a cell during G2 a single time and then leave the cell alone. What is the consequence? Group of answer choices A. the cells exits mitosis into G1 B. the cell can never enter mitosis C. the cell immediately enters mitosis D. the cell's entry into mitosis is delayedarrow_forwardThe term differentiation refers to (a) the loss of genes from cells. (b) the acquisition of new functional capabilities by cells. (c) the production of functionally specialized cells. (d) the division of genes among different types of cells.arrow_forwardCytokinesis involves ... A.)division of the cytoplasm B.)a cleavage furrow (animals) or cell plate formation (plants) C.)the completion of the cell cycle D.)all of the abovearrow_forward
- Final preparations for cell division are made during this stage of the cell life cycle: (a) G1, (b) G2, (c) M, (d) S.arrow_forwardDiscuss the concepts of; "CELL DIFFERENTIATION" Also, cite examples to illustrate these concepts.arrow_forwardWhich of the following is a key feature of stem cells?a. They have the ability to divide.b. They have the ability to differentiate.c. They are always pluripotent.d. Both a and b are true of stem cells.arrow_forward
- Identify the main phases of interphase in the correct order. Select one: a. Growth, mitosis and cytokinesis b. Growth 1, synthesis, growth 2 c. Growth, synthesis, and mitosis d. Growth and synthesisarrow_forwardIn the absence of cdc25 cells would not be able to undergo mitosis. True or False?arrow_forwardThe mitotic spindle plays a critical role in which of the following processes? a) dissolving the nuclear membrane b) triggering the compaction and condensation of chromosomes c) splitting of the cell (cytokinesis) following mitosis d) separation of sister chromatidsarrow_forward
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