BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 19, Problem 7U
The process of nuclear reprogramming
a. is a normal part of pattern formation.
b. reverses the changes that occur during differentiation.
c. requires the introduction of new DNA.
d. is not possible with mammalian cells.
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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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- Which of the following is typical of cancer cells? A. The parent cell of the tumor contains a single mutation in a single checkpoint gene. B. Malignant cells migrate. C. Cancer cells lose the ability to divide. D. Products of oncogenes inhibit mitosis E. Benign tumors invade normal tissue.arrow_forwardTumor Suppressor Genes are often called as gatekeepers because: a. They signify their involvement in governing the dynamics of cell proliferation b. They allow tumors to proliferate at an uncontrolled rate c. To allow a transport channel of suppressors d. They are not referred to as ?gatekeepers?arrow_forwardHypermethylation is thought to contribute to cancer by a. inhibiting DNA replication. b. inhibiting the expression of tumor-suppressor genes. c. stimulating the translation of oncogenes. d. stimulating telomerase.arrow_forward
- If M-phase-promoting factor is injected into a Xenopus primary oocyte, which of the following occurs? only one answer is correct from the following. a. S phase begins. b. Apoptosis is induced. c.The nuclear envelope breaks down. d. The oocyte arrests in G2. e. Mitosis is completed.arrow_forwardWhich of the following correctly explains how gene expression can change in a differentiating cell in an animal embryo?A. DNA methylation triggered by apoptosis leads to suppression of some genes and expression of others.B. Presence of germ layers trigger hormonal release from endocrine glands, signaling to certain cells to express genes.C. Cell signals through plasmodesmata allow coordination of cellular activities and cell differentiation.D. Cues from the cytoplasm and from surrounding cells can induce changes in gene expression.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_forward
- Which of the following statements about the cell cycle is TRUE? a. The protein APC blocks cells from entering anaphase b. CDKs are degraded after each cell cycle phase by the addition of a ubiquitin chain to the proteins c. A kinase is a protein that adds a ubiquitin chain to other proteins Cyclin activity is necessary, but not always sufficient, for CDK activation d. Cyclin proteins must be degraded before Cdk proteins can be activatedarrow_forwardA parent cell divides to form two genetically identical daughter cells in the process of mitosis. For mitosis to take place: A. the parent cell must divide its DNA in half so each daughter cell gets only the genes needed to carry out its functions. In this way, differentiation occurs. B. the parent cell must reproduce its DNA during telophase C. the parent cell must first be fertilized D. the parent cell must replicate its entire genome prior to mitosis E. crossover must be delayed until the second cell divisionarrow_forwardWhich of the following best describes a gene that codes for a tumor-suppressor protein? a. One that helps to prevent progression through the cell cycle. b. One that helps prevent apoptosis. c. One that codes for a DNA repair enzyme. d. One that supports part of a growth factor signaling pathway.arrow_forward
- Which of the following is MOST likely true of aggressively dividing cancer cells (select one)? A. They do not express telomerase B. They do not express hTERT C. They are in a state of cell crisis D. Their telomeres are stabilized (not shortening with each cellular division) E. None of Abovearrow_forwardWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.arrow_forwardA tumor suppressor gene regulates the cell cycle; an example is . Select one: a. positively, p21 b. negatively, cyclin c. positively, retinoblastoma d. negatively, retinoblastoma e. positively, RAS Cycle HW due Jump to. 4) Next pa cancer stem cellsarrow_forward
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