Cell Division(mock) Flashcards Preview

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Flashcards in Cell Division(mock) Deck (24)
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1
Q

The nucleus of a cell contains

A

Chromosome made of DNA

2
Q

Each chromosome carries

A

Hundreds to thousands of genes

3
Q

Different genes contain

A

The code to make different protein and do control the development of different characteristics

4
Q

In body cells chromosomes are found in

A

Pairs

One from each parent

5
Q

Different species have different numbers of

A

Pairs of chromosome
Humans 23
Dogs 39

6
Q

Cell cycle

A

Series of changes involving growth and division

7
Q

Mitosis

A

When the cell divides into two identical cells

8
Q

Before a cell can divide it needs to

A

Grow and increase the number of sub cellular structures

Such as ribosomes and mitochondria

9
Q

When the cell divides

A

Dna replicates si two two copies of each chromosome

Genetic material is doubles

10
Q

3 steps of mitosis

A

1- one set of chromosomes is pulled to each end of the cell
2- the nucleus divides
The cytoplasm and cell membranes divide to form two identical cell

11
Q

Mitosis is important for

A

Growing and development of multi cellular organisms
Repairing damaged tissue
Asexual reproduction

12
Q

Undifferentiated

A

Not yet become specialised

13
Q

Stem cells

A

Divide to make different types of cells

14
Q

Stem cells are found in

A

Human embryos
In the umbilical chord
Some organs and tissues

15
Q

Stem cells from human embryos are called

A

Embryonic stem cells

Can make all types of cells

16
Q

Adult stem cells are found in

A

Some organs and tissues
Can only make certain types of cells and there capacity to divide is limited
Difficult to find and isolate

17
Q

Stem cells are useful for

A

Replacing damaged cells

Treating conditions

18
Q

Therapeutic cloning

A

A cloned embryo of the patient may be made and used as a source of stem cells

19
Q

Stem cells from the cloned embryo will not be d

A

Rejected

20
Q

Concern for using stem cells

A

Risks such as the transfer or viral infection

Ethical or religious objections

21
Q

Stem cells in plants are found in

A

Meristems

22
Q

Meristems allow

A

Plants to make new cells for growth

23
Q

Stem cells can be used to produce

A

Clones of plants quickly

24
Q

Stem cells in plants useful

A

Protect from extinction- cloned

Disease resistance in large numbers of identical crop plants