B2.1.6 - Stem Cells Flashcards Preview

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Flashcards in B2.1.6 - Stem Cells Deck (15):
1

Are stem cells differentiated?

No

2

What can stem cells divide by?

Mitosis

3

Why can stem cells develop into any type of specialised cell?

At first it doesn’t differentiate, but the cells that are made from mitosis do differentiate

4

What are the two main types of stem cell?

Embryonic and stem cells

5

Where are embryonic stem cells found?

Inside embryos

6

What types of cells can embryonic stem cells divide into?

All kinds

7

What do embryonic stem cells do?

They divide by mitosis to produce all the cells needed to make an organism

8

Where are adult stem cells found?

In various body tissues

9

What cells can adult stem cells differentiate into?

Lots of kinds, but not as many as embryonic stem cells

10

What happens to stem cells once an animal is fully grown?

It stops dividing

11

When would a stem cell still divide if an animal was fully grown?

If it was activated by a disease and had to repair damage

12

Where are stem cells found in plants?

In plant meristems

13

Why can differentiated plant cells not divide?

Their cell walls are tough and rigid

14

Where are meristems on a plant?

On the stem, or on the tip of a root

15

Describe the appearance of plant stem cells.

They look very different compared to other plant cells. They are small compared to other plant cells, they have very thin walls, small vacuoles, and no chloroplasts.