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Flashcards in Chapter 10 Deck (38)
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1

What is the definition of M phase?

Mitosis

2

What is the M phases divided into?

Prophase

Prometaphase

Metaphase

Anaphase

Telophase

3

How do bacteria reproduce?

Binary fission

4

The German biologist, Walter Flemming, was the first to microscopically observe which of the following processes?

Mitosis

5

The cells of most eukaryotes have between ____ and ____ chromosomes, although some species can have hundreds or even thousands of chromosomes.

10

50

6

Chromatin is a complex with ~40% DNA and _____

~60% Protein

7

In bacterial cells, the replication of DNA begins at a specific site called the  _____ of replication, and proceeds in both directions around the circular DNA until a specific _____ is reached.

orgin

termination

8

During DNA replication the chromosomes contract and the identical halves are called _____ _____.

Sister

Chromatid

9

How do bacteria reproduce?

Binary Fission

10

Typically, a dividing mammalian cell completes its cell cycle in about how many hours?

24 hours

11

When DNA replicates the sister chromatids are held together at their centromeres by which of the following complex of proteins?

Cohesins

12

During _____ which includes the G1, S and G2 phases of the cell cycle, the cell grows and chromosomes replicate in preparation for cell division.

interphase

13

In multicellular eukaryotic organisms, the production of new cells follows a highly regulated sequence of growth, DNA replication, and division. This sequence is referred to as the cell _____, which consists of the G1, S, G2, and M phases. 

Cycle

14

During the five phases of _____,  the replicated genetic material is partitioned into _____ new nuclei.

Mitosis

two

15

Condensation of chromosomes is initiated in the ____ phase of interphase and continues until the end of prophase.

G2

16

While preparing to divide, the cell grows and copies its chromosomes during _____.

Interphase

17

During prometaphase, sister chromatids attach to the spindle by their _____ , which are attached to the centromere region of each sister chromatid.

kinetochores

18

During _____ the chromosomes are aligned midway between the spindle poles.

metaphase

19

The pairs of sister chromatids align themselves in a single row along a plane half-way between the poles during which of the following phases of mitosis?

Metaphase

20

While preparing to divide, the cell grows and copies its chromosomes during which of the following stage?

Interphase

21

The shortest stage of mitosis is _____.

anaphase

22

During _____ the chromosomes are aligned midway between the spindle poles.

metaphase

23

During telophase, chromosomes uncoil to allow for gene _____.

expression

24

A cleavage furrow is typically formed during cytokinesis in ___ cells.

animal

25

During the stage of mitosis known as _____ , gene expression resumes, as chromosomes uncoil.

telophase

26

Cytokinesis involves the formation of a cleavage _____ in animal cells and a cell _____ in plant cells.

furrow

plate

27

The _____ apparatus is broken down during telophase.

spindle

28

If necessary (e.g., if DNA is damaged), the cell cycle can be arrested at specific points called _____.

Checkpoints

29

MPF is composed of two parts: a cyclin component and a ____ component.

kinase

30

What enzymes control the progression of cells through the cell cycle checkpoints?

Cdks