The Cell Cycle And Cellular Reproduction Flashcards Preview

Year 1 Cell biology handouts > The Cell Cycle And Cellular Reproduction > Flashcards

Flashcards in The Cell Cycle And Cellular Reproduction Deck (38):
1

Animal cells have centrioles, what cells don't?

Plant cells

2

Mitosis allows growth and increase size in both?

Plant and animals

Both plant and animal cells undergo cytokinesis.

3

Mitosis creates diploid cells from??

Diploid cells

4

The term that refers to division of the cytoplasm is?

Cytokinesis

5

Cancer cells require lots of nutrients, which are supplied by blood vessels. The growth of new blood vessels to cancerous cells is called ??

Angiogenesis

6

How many chromosomes are in each bacterial cell?

Only one

7

A bacterial chromosome is present in a ?

Single copy per cell

8

A bacterial chromosome is attached to the?

Plasma membrane

9

A bacterial chromosome is in a?

Loop

10

Virtually all specialised cells of multicellular organisms have the same amount of?

DNA and the same number of chromosomes as all other cells of the organism

11

The term used for DNA in a nucleus before it becomes condensed in preparation for mitosis is?

Chromatin

12

Each chromosome separates into daughter chromosome by?

Binary fusion

13

In prokaryotes the chromosome is held in a region called the??

The nucleoid

14

Chromosomes contain both?

DNA and associated Histones

15

Chromosomes condense from ?

Chromatin at the start of mitosis

16

Chromosomes disperse back into chromatin at the end of??

Mitosis

17

Chromosomes are not located within the??

Nuclear envelope during mitosis

18

The Diploid (2n) number of chromosome for humans is??

46

19

The haploid (n) number of chromosomes for humans is?

23

20

Mitosis is a process that duplicates and divides only what?

Only the nuclear contents

21

Mitosis produces two daughter cells that contain the same number of?

Chromosomes as the parent cell

22

What is the correct sequence of stages in the cell cycle?

G1
S
G2
M

23

Below the skin are stem cells that divide, with some cells continuing the stem cell line and others being pushed toward the surface to?

Flatten and die and be sloughed off.

24

In bone marrow are other stem cells producing cells such as the erythrocytes that lose their nucleus and function for a few months in the blood stream before they too die, such "dead end" cells that reproduce no further... Leave the.....?

Cell cycle in a G0 phase, which immediately follow telophase

25

The critical checkpoints that control the cell cycle are at the?

G1 to S stage and G2 to M phase

26

During which stage of the cell cycle is cell growth and replication of organelles most significant ?

G1 Phase

27

Which stage is most associated with a cell that is unable to divide again, such as a muscle or nerve cell?

The G0 phase

28

What is the correct sequence of stages of mitosis?

Prophase
Pro metaphase
Metaphase
Anaphase
Telophase

29

What occurs in metaphase ?

Chromosomes line up along the equator of the dividing cell

30

What occurs in anaphase ?

Chromosomes move to opposite poles

31

In multicellular organisms, mitosis is a means of?

Tissue growth and repair

32

Apoptosis refers to cell death and can be?

Programmed and is essential to normal development

33

Most of the cell cycle is spent in ?

Interphase

34

Apoptosis is?

- programmed cell death
- is a process that acts to decrease the number of somatic cells

- works to oppose the effects of mitosis
- is necessary for the proper development of an embryo

35

Each Eukaryotic chromosomes.......??

- consists of both DNA and protein
- contains Histones responsible for packaging DNA to fit into a small space

- come in pairs in most organisms
-

36

Chromosomes like )(
typically appear in which stage of the cell cycle ??

Late prophase and metaphase

37

The chromosome is only highly coiled during what phase?

During mitosis

38

Each half of the chromosome will split from the other at ?

During anaphase