Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Textbook Question
Chapter 19, Problem 1A
What is the common theme in cell determination by induction or cytoplasmic determinants?
a. The activation of transcription factors
b. The activation of cell division
c. A change in gene expression
d. Both a and c are correct.
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How does gene activation lead to cell differentiation? Explain the correct answer and explain why the others are wrong.
A. Different genes are activated in different cells, causing each cell to have a unique funcation
B. The same genes are actives in every cell of your body, causing every cell to function the same
C. Certain cells only have parts of DNA that causes cell deferentiation
D. Unique genes are in different cells, causing each cell to have a unique function
What is the role of executioner proteins in apoptosis?a. They kill the cell by destroying its proteins.b. They function as the “death receptors” on the surface of the cell.c. They are part of the immune response that eliminates the cells.d. They cause the cell to swell and burst.
How does MPF trigger M phase of the cell cycle?
A.
MPF phosphorylates proteins that triggers the activation of M phase
B.
MPF has a regulatory role in breakdown of the nuclear envelope during M phase
C.
MPF is a dimer subunit that is turned on during S phase to aid with chromosome replication
D.
MPF Cdk subunits regulate M phase
Chapter 19 Solutions
Biology
Ch. 19.1 - Prob. 1LOCh. 19.2 - Prob. 1LOCh. 19.2 - Prob. 2LOCh. 19.2 - Distinguish differences in cell division between...Ch. 19.3 - Prob. 1LOCh. 19.3 - Prob. 2LOCh. 19.3 - Prob. 3LOCh. 19.4 - Prob. 1LOCh. 19.4 - Prob. 2LOCh. 19.5 - Prob. 1LO
Ch. 19.5 - Describe D/V axis formation in Drosophila.Ch. 19.6 - Prob. 1LOCh. 19.6 - Prob. 2LOCh. 19.6 - Prob. 3LOCh. 19.7 - Prob. 1LOCh. 19.7 - Prob. 2LOCh. 19.7 - Prob. 3LOCh. 19 - What type of cells would develop if you injected...Ch. 19 - The sheep used for the donor nucleus had a...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. 3ACh. 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 process involving signals being sent between a cell interacting with one or more cells close by, to change the fate of the cell, or help in determining its final form is called A. activation B. Morphogenesis C. Induction D. repressorsarrow_forwardTumors involve a malfunction in this cellular process. a. transcription b. translation c. phagocytosis d. mitosisarrow_forwardWhy would the failure of the p53 tumor supressor gene be more likely to cause cancer in a seventy year old person compared to a ten year old person? Group of answer choices A. the p53 gene never works well in old people B. cells divide more rapidly as people get older C.The seventy year old is more likely to have pre-existing failures in cell cycle control D. there are fewer mutations in genes controlling the cell cycle in older peoplearrow_forward
- Which of these is a characteristic of cancer cells? a. They do not exhibit contact inhibition. b. They lack specialization. c. They have abnormal chromosomes. d. They fail to undergo apoptosis. e. All of these are correct.arrow_forwardWhich negative regulatory molecule can trigger cell suicide (apoptosis) if vital cell cycle events do not occur? a. p53 b. p21 c. retinoblastoma protein (Rb) d. cyclin-dependent kinase (Cdk)arrow_forwardWhat would be the effect on the cell cycle of a drug that inhibited each of the following? a. MPF b. Cyclin-E–CDK c. Cyclin-D–CDKarrow_forward
- The 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_forwardWhich of the following would be expressed at varying levels during different parts of the cell cycle? A. cyclin-dependent kinases B. RNA polymerase C. cyclins D. Glycolysis enzymesarrow_forwardDuring which phase of mitosis do the chromatids become chromosomes? A. Prophase B. Telophase C. Cytokinesis D. Metaphasearrow_forward
- Which 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_forwardWhy are dominant mutations in proto-oncogenes generally not inherited? A. Inherited mutations in proto-oncogenes would not affect cell division rate B. Inherited mutations in proto-oncogenes would decrease cell division rate and no viable embryo would form C. Inherited mutations in proto-oncogenes would increase cell division rate and no viable embryo would form D. Dominant mutations in proto-oncogenes are always inheritedarrow_forwardWhat is an induced pluripotent stem cell? a. A cell from which the nucleus has been removed b. A cell extracted from an early embryo c. A specially treated somatic cell that can develop into any cell type d. A specially treated embryonic stem cell that develops into one specialized cell typearrow_forward
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