Cell Division and Genetic Material Quiz

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30 Questions

What is the most remarkable aspect of cell division?

The distribution of identical genetic material to two daughter cells

What is the main gene-carrying structure of a prokaryotic cell?

Diffused mass of long thin fibers

What is the endowment of DNA in a cell referred to as?

Genome

What happens to chromatin as the cell prepares to divide?

It coils up to form tight, distinct chromosomes

What is the term for the duplicated form of each chromosome consisting of two copies?

Sister chromatids

How long is the DNA molecule in a human cell?

Nearly 2 meters in length

What is the correct order of events during the first portion of the mitotic phase?

Chromatin tightly coils, nuclear envelope disintegrates, mitotic spindle forms

How many chromatids are produced when a human cell has 46 duplicated chromosomes?

92 chromatids

In which stage of mitosis do liberated chromosomes begin moving to the opposite ends?

Anaphase

In human somatic cells, how many chromosomes are present?

46 chromosomes

During which phase does the nuclear envelope reappear and chromosomes become less condensed?

Telophase

What is the purpose of meiosis in sex cells or gametes?

To reduce the number of chromosomes by half

What occurs during cytokinesis in animal cells?

Physical separation of cytoplasmic components into two daughter cells

What is characteristic of the second portion of the mitotic phase known as cytokinesis?

Physical separation of cytoplasmic components into two daughter cells

What occurs during prometaphase in mitosis?

Nuclear envelope fragments and chromosomes become clearer

What is a characteristic of sex cells or gametes in humans?

They contain 23 chromosomes and are haploid cells

What is the significance of the characteristic number of chromosomes in eukaryotic species?

It influences the process of cell division

What is the main function of chromatin in a eukaryotic cell?

To store and organize genetic information

What distinguishes the chromosomes of a eukaryotic cell from those of a prokaryotic cell?

Number and packaging

How does the coiling up of chromatin during cell division contribute to the process?

It ensures the accurate segregation of genetic material

What is the primary reason for the duplication of chromosomes before cell division in eukaryotic cells?

To ensure each daughter cell receives an identical set of genetic material

What is the effect of having 20,000-25,000 genes in a single DNA molecule in human cells?

It increases the complexity of gene regulation in human cells

What is the term for the process in which the sister chromatids of a duplicated chromosome separate from each other?

Anaphase

How many chromosomes are present in human somatic cells?

46

What is characteristic of the second portion of the mitotic phase known as cytokinesis?

Physical separation of cytoplasmic components

What occurs during prometaphase in mitosis?

Nuclear envelope fragments

What is characteristic of sex cells or gametes in humans?

Haploids with 23 chromosomes

In which stage of mitosis do liberated chromosomes begin moving to the opposite ends?

Anaphase

What is the term for the duplicated form of each chromosome consisting of two copies?

Chromatid

What occurs during cytokinesis in animal cells?

Physical separation of cytoplasmic components

Test your knowledge about cell division and the genetic material in prokaryotes and eukaryotes. Learn about the fidelity of DNA passage from one generation of cells to the next and the cellular organization of genetic material.

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