Organization of DNA in the Cell

Multiple Choice

A collection of DNA and associated proteins in a cell defines the term:

a) Sister Chromatids.

b) Centromere.

c) Chromatin.

d) Chromosome.

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Multiple Choice

Choose the option that correctly lists the following genetic material in a dividing cell from smallest to largest.

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Multiple Choice

The structures labeled Y in the image below are called:

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Multiple Choice

Which of the following is false in respect to eukaryotic chromosomes?

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Multiple Choice

Which of the following is false regarding sister chromatids?

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Multiple Choice

The complex of DNA and protein that makes up a eukaryotic chromosome is properly called __________.

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Multiple Choice

The region of a chromosome in which the two double strands of replicated DNA are held together is called __________.

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Multiple Choice

The centromere is a region in which __________.

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Textbook Question

What is chromatin? a. the histone-containing protein core of the nucleosome b. the 30-nm fiber c. the complex of DNA and proteins found in the nucleus d. the histone and non-histone proteins in eukaryotic nuclei

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Textbook Question

What is chromatin? a. the histone-containing protein core of the nucleosome b. the 30-nm fiber c. the complex of DNA and proteins found in the nucleus d. the histone and non-histone proteins in eukaryotic nuclei

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Textbook Question

Add labels to the figure that follows, which illustrates duplicated chromosomes.

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Textbook Question

The centromere is a region at which . a. sister chromatids are attached to each other; b. metaphase chromosomes align; c. the tips of chromosomes are found; d. the nucleus is located

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Textbook Question

The following statements are about the control of chromatin condensation. Select True or False for each. T/F Reducing histone acetylase activity is likely to decrease gene transcription. T/F Mutations that reduce the number of positively charged amino acids on histones should promote open chromatin. T/F Chromatin remodeling complexes add chemical groups to histones. T/F Adding an inhibitor of DNA methylation is likely to reduce gene transcription.

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Textbook Question

The following statements are about the control of chromatin condensation. Select True or False for each. T/F Reducing histone acetylase activity is likely to decrease gene transcription. T/F Mutations that reduce the number of positively charged amino acids on histones should promote open chromatin. T/F Chromatin remodeling complexes add chemical groups to histones. T/F Adding an inhibitor of DNA methylation is likely to reduce gene transcription.

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Textbook Question

Sister chromatids . a. are two different chromosomes attached to each other; b. are exact copies of one chromosome that are attached to each other; c. arise from the centrioles; d. are broken down by mitosis; e. are chromosomes that carry different genes

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Textbook Question

Explain how and why chromatin is condensed in the nucleus.

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Textbook Question

Which of the following statements correctly describes the function of the nucleolus?

a. Within the nucleolus we find genes for rRNA.

b. Nucleoli manufacture mitochondrial proteins for export to the cytosol.

c. Nucleoli assemble the nuclear envelope.

d. The nucleolus contains the genes that form the Golgi apparatus.

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