Cell Cycle

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Cell Cycle

CE

Chief Editor

Feb 13, 2023

Table of Contents

Practice Quiz Mode

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In which stage of the cell cycle each chromosome is duplicated and so it consists of two chromatids?

Difficulty: Hard

A:

G1

B:

S

C:

M

D:

G2

If you observe a cell like this one, what phase of mitosis is it?

Difficulty: Easy

A:

Anaphase

B:

Telophase

C:

Metaphase

D:

Prophase

During which phase of mitosis spindles are formed?

Difficulty: Easy

A:

G2

B:

Interphase

C:

Prophase

D:

Metaphase

At which stage of the cell cycle, the cell is preparing to begin DNA replication?

Difficulty: Medium

A:

1

B:

G2

C:

S

D:

M

Which of the following features of cell division is very different for animal and plant cells?

Difficulty: Hard

A:

Prophase

B:

Metaphase

C:

Anaphase

D:

Cytokinesis

Before cell division, each chromosome replicates or duplicates its genetic material. The products are connected by a centromere and are called

Difficulty: Hard

A:

Sister chromosomes

B:

Homologous chromosomes

C:

Sex chromosomes

D:

Sister chromatids

The process of mitosis ensures that

Difficulty: Medium

A:

Each new cell is genetically different from its parent

B:

Each new cell receives the proper number of chromosomes

C:

Cells will divide at the appropriate time

D:

DNA is replicated without errors

Cytokinesis in a plant cell is characterized by

Difficulty: Medium

A:

The equal division of homologous chromosomes

B:

A pinching off of the cell membrane to divide the cell

C:

The formation of a cell plate in the cytoplasm

D:

The movement of the chromosomes from the metaphase plate

Which of the following is unique to mitosis and not a part of meiosis I?

Difficulty: Medium

A:

Homologous chromosomes pair forming bivalents

B:

Homologous chromosomes cross over

C:

Chromosome pairs are broken during anaphase

D:

Chromatids separate during anaphase

Which event distinguishes meiosis from mitosis?

Difficulty: Medium

A:

Condensation of chromosomes

B:

Loss of the nuclear membrane

C:

Formation of metaphase plate

D:

The pairing of homologous chromosomes

In which stage of the cell cycle do most cells spend their lives?

Difficulty: Medium

A:

Prophase

B:

Metaphase

C:

Interphase

D:

Telophase

Which of the following distinguishes meiosis from mitosis?

Difficulty: Medium

A:

In meiosis, the chromosome number is reduced

B:

In meiosis, the daughter cells are genetically different from the parent cell

C:

In meiosis, at least some of the daughter cells differ genetically from each other

D:

All of the above

What reason would you suggest for the fact that the total DNA content daughter cell is reduced during meiosis?

Difficulty: Hard

A:

Chromosomes do not replicate during the interphase before meiosis I

B:

Chromosomes do not replicate between meiosis I and II

C:

Half of the chromosomes from each gamete are lost during fertilization

D:

Sister chromatids separate during the anaphase of meiosis I

Which one is the difference between mitosis and meiosis I?

Difficulty: Medium

A:

Homologous chromosome pairs synapse during mitosis

B:

Chromosomes do not replicate in the interphase preceding meiosis

C:

Homologous chromosome pairs synapse during meiosis but not mitosis

D:

Spindles composed of microtubules are not required during meiosis

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