BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Textbook Question
Chapter 10, Problem 3U
What is a nucleosome?
a. A region in the cell’s nucleus that contains euchromatin
b. A region of DNA wound around histone proteins
c. A region of a chromosome made up of multiple loops of chromatin
d. A 30-nm fiber found in chromatin
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Students have asked these similar questions
Contrast euchromatin and heterochromatin. Then explain how DNA can transition from one to the other. Use the terms histone, nucleosome, and acetylation.
Which process leads to independent assortment?
a)The process of separating chromosomes
b)The random alignment of homologs with respect to the others on the metaphase plate
c)The process of forming the mitotic spindle
d)The process of cytokinesis
Other than obvious changes in protein-encoding Neanderthal genes, changes in what type of non-coding DNA sequences would affect cell function?
A) Alu family of repeated sequences
B) Short tandem repeats (STRs)
C) Protein factors that regulate gene expression
D) Short interspersed nuclear elements (SINEs)
Chapter 10 Solutions
BIOLOGY
Ch. 10.1 - Prob. 1LOCh. 10.2 - Prob. 1LOCh. 10.2 - Distinguish between homologues and sister...Ch. 10.2 - Prob. 3LOCh. 10.3 - Describe the eukaryotic cell cycle.Ch. 10.4 - Prob. 1LOCh. 10.4 - Prob. 2LOCh. 10.5 - Describe the phases of mitosis.Ch. 10.5 - Explain the importance of metaphase.Ch. 10.5 - Compare cytokinesis in plants and animals.
Ch. 10.6 - Prob. 1LOCh. 10.6 - Prob. 2LOCh. 10.7 - Prob. 1LOCh. 10.7 - Prob. 2LOCh. 10 - Binary fission in prokaryotes does not require the...Ch. 10 - Chromatin is composed of a. RNA and protein. b....Ch. 10 - What is a nucleosome? a. A region in the cells...Ch. 10 - What is the role of cohesin proteins in cell...Ch. 10 - The kinetochore is a structure that functions to...Ch. 10 - Separation of the sister chromatids occurs during...Ch. 10 - Why is cytokinesis an important part of cell...Ch. 10 - What steps in the cell cycle represent...Ch. 10 - Cyclin-dependent kinases (Cdks) are regulated by...Ch. 10 - Prob. 2ACh. 10 - Genetically, proto-oncogenes act in a dominant...Ch. 10 - The metaphase to anaphase transition involves a....Ch. 10 - The main difference between bacterial cell...Ch. 10 - In animal cells, cytokinesis is accomplished by a...Ch. 10 - Regulation of the cell cycle is very complex and...Ch. 10 - Review you knowledge of signaling pathways...Ch. 10 - Compare and contrast how mutations in cellular...
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- Why was the cold ethanol added to the soap and salt mixture? A To digest the cell walls B To dissolve the RNA C To emulsify lipids and remove large cellular debris D To precipitate the DNA E To denature the cytoplasmic proteinsarrow_forwardWhich step follows the assembly of new DNA strands by DNA polymerase? a.DNA ligase seals any gaps remaining between bases of new DNA. b.Primers base-pair with the exposed single DNA strands. c.Repair enzymes correct potential mutations in the DNA sequence. d.Enzymes unwind and separate the two strands of DNA.arrow_forwardSuppose that DNA did not have a double helix structure, and instead DNA was single-stranded. Imagine that a cell with this single-stranded DNA was ready to begin cell division. How could a cell replicate single-stranded DNA so the daughter cells could receive an exact copy of the genes present in the original cell? Use your answer to explain why it is an advantage for DNA to have a double helix structure with paired nucleotides.arrow_forward
- What is the role of Proteinase K in DNA isolation? A. Inhibit enzymes B Catalyze breakdown of nuclei acids C Degrade proteins D Remove disultide bongs in proteinsarrow_forwardWhich describes a role for the kinetochore microtubules during mitosis? Polymerization drives anaphase A. Depolymerization drives anaphase B. Depolymerization drives anaphase A. Depolymerization drives separation of centrosomes (spindle poles) during prometaphase.arrow_forwardWhat is the purpose of mitosis? a It ensures that new nuclei have an exact copy of DNA. b It ensures the reproduction of mitochondria and chloroplasts. c It guarantees that each daughter cell has half the amount of DNA of parent cells. d It prevents the occurrence of cancer cells.arrow_forward
- Which helps prevent errors in DNA replication? A) Complementary base pairing reduce errors B) DNA ligase checks the DNA for errors C) DNA is located in the ribosomes D) Any base can pair with any other basearrow_forwardWhich step follows the assembly of new DNA strands by DNA polymerase? A. Enzymes unwind and separate the two strands of DNA. B. Repair enzymes correct potential mutations in the DNA sequence. C. Primers base-pair with the exposed single DNA strands. D. DNA ligase seals any gaps remaining between bases of new DNA.arrow_forwardTreating a cell with a drug to stop tRNA from doing its job would mean what? A. that ribosomes would fall apart B. that sugars would not be added to proteins C. that nothing would be available to translate D. that amino acids would not be brought to the growing proteinarrow_forward
- In eukaryotic chromosomes, DNA wraps around _________. a. histone proteins c. centromeres b. sister chromatids d. nucleosomesarrow_forwardA promoter is ______. a. a specific sequence of DNA nucleotides b. a specific sequence of RNA nucleotides c. a protein that binds to DNA d. an enzyme that synthesizes RNAarrow_forwardA chromosome contains many different gene regions that are transcribed into different ________. a. proteins c. RNAs b. polypeptides d. DNA strandsarrow_forward
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