Cell Divison Flashcards Preview

Biology- cell biology > Cell Divison > Flashcards

Flashcards in Cell Divison Deck (14):
1

What are chromosomes ?

Copied lengths of DNA

2

What is the cell cycle ?

1. Growth and replication of DNA

2.mitosis

3

Why is mitosis used for by multicellular organisms ?

For growth development and repair

Repairing damaged cells

4

What happens in the first part of the cell cycle?

The sub cellular structures increase -ribosomes and mitochondria

DNA is then duplicated

5

What happens in mitosis?

-chromosomes line up at the centre of the cell

-cell fibres pull them apart to go to opposite ends of the cell

-membranes form around the s this becomes the nucleus

-cytoplasm and cell membrane divide

6

What does mitosis produce ?

Two identical daughter cells

7

Where in the cell are chromosomes found ?

Nucleus

8

What type of cell replicates by binary fission?

Prokaryotic

9

What is the right condition for bacteria to divide?

Warm environment

Lots of nutrients

10

What is the name of the process at which bacteria divide ?

Binary fission

11

Give the stages of binary fission?

1. Cricular DNA and plasmids replicate

2.dna strands move to opposite poles of the cell

3.cytoplasm divides new cell wall formed

4.two new daughter cells produced

12

Describe how stem cells can be used to treat disorders ?

They can be grown into a particular type of cell, that can replace faulty ones

13

Explain why embryonic stem cells have the potential to treat more disorders than adult cells ?

Embryonic stem cells have the potential to develop in to any type of cells

Where as assault cells can only delicious in to certain types

14

How can stem cells be used to preserve Rare species of plant ?

Copies of the plant can be made by taking the stem cells from the meristem and growing the into clones