Key Concepts of the Cell Cycle

What is a chromosome in eukaryotes composed of?

• A single molecule of DNA associated with proteins

• Proteins only

• A single molecule of RNA

• Multiple molecules of DNA

What does the commonly used image of a chromosome actually depict?

• A tangled mess of DNA and protein

• A single condensed chromosome

• A pair of homologous chromosomes

• A linked pair of identical sister chromatids

What is chromatin?

• A type of protein

• A single molecule of DNA

• A complex of DNA, proteins, and RNA

• A pair of sister chromatids

How many unique chromosomes do humans have in a haploid cell?

• 4

• 23

• 46

• 16

What does the variable 'N' represent in biology?

• The number of genes in a chromosome

• The number of chromosomes in a diploid cell

• The number of unique chromosomes in a haploid cell

• The number of proteins in a cell

What are alleles?

• Non-coding regions of DNA

• Proteins associated with DNA

• Different versions of the same gene

• Identical copies of a gene

What is the term for chromosomes that are very similar but not identical?

• Sister chromatids

• Homologous chromosomes

• Chromatin

• Non-coding DNA

What is the series of biological events that occur during each cell division called?

• Mitosis

• Meiosis

• The cell cycle

• Cytokinesis

What is a sister chromatid?

• A pair of homologous chromosomes

• A copy of one of 46 homologous chromosomes

• A single molecule of DNA

• A type of protein

What does '4C DNA content' indicate in a diploid cell?

• The cell has four times the number of genes

• The cell has four sets of chromosomes

• The cell has twice the DNA content it once had

• The cell has four unique chromosomes