Topic 2 Flashcards Preview

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Flashcards in Topic 2 Deck (16):
1

Define ‘Diploid cells’.

A cell that has two copies of each chromosome. (One from mother, one from father)

2

How does a cell undergo mitosis? Give the order.

Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis

3

Define Interphase.

When the cell copies its DNA in preparation for mitosis

4

Define Prophase

The chromosomes condense and the membrane around the nucleus breaks down.

5

Define metaphase

The chromosomes line up in the centre of the cell.

6

Define Anaphase

Cell fibres pull chromosomes apart. The 2 arms of the chromosome go to opposite ends of the cell.

7

Define Telophase

Membranes form around each set of chromosomes. These become the nuclei of the 2 new cells.

8

Define Cytokinesis

The cytoplasm and cell membrane dividing

9

What is a meristem in a plant?

A bit of tissue found in growing parts of a plant that contains stem cells.

10

What is the medulla oblongata used for in the brain?

To control unconscious activities such as breathing and heart rate

11

What is the cerebellum used for?

Responsible for muscle coordination and balance.

12

What do dendrites and dendrons do?

Carry nerve impulses towards the cell body

13

What do axons do?

Carry nerve impulses away from the cell body

14

Sensory neurone?

One long dendron, one short axon

15

Motor Neurone?

Many short dendrites, One long axon

16

Relay Neuron?

Many short dendrites, 1 axon