Cell Biology 1

Question 1

Name basic unit of life

Answer 1

Cell

Question 2

How can you tell a cell is bacterial

Answer 2

Has a plasmid

Question 3

How can you tell if a cell is a plant

Answer 3

Chloroplasts

Question 4

How can you tell a cell is an animal

Answer 4

No cell wall

Question 5

Mitochondria

Answer 5

Aerobic respiration takes place (occurs)

Question 6

Cell membrane

Answer 6

Controls entry and exit of materials

Question 7

Cytoplasm

Answer 7

Where all chemical reactions take place

Question 8

Nucleus

Answer 8

Controls cells activities

Question 9

Ribosomes

Answer 9

Protein is made

Question 10

Chloroplasts

Answer 10

Only in plant cells contains chlorophyll to trap light energy for photosynthesis

Question 11

Vacuole

Answer 11

Contains cell sap, helps supports plant cell

Question 12

Cell wall

Answer 12

Provides shape and support

Question 13

Plasmids

Answer 13

DNA which can be transferred from one bacterial cell to another

Question 14

What are plant cell walls made of

Answer 14

Cellulose

Question 15

What is cell division for

Answer 15

Replace old or dying cells
To replace damaged tissue
To allow organism to increase in size

Question 16

Mitosis

Step1 ……….. appear in nucleus as to fine threads

Answer 16

Chromosomes

Question 17

Mitosis
Step 2 Each chromosome ………. to form 2 new ………. joined together by a centromere. The Chromosomes …….and thicken and become more visable

Answer 17

Replicates
Chromatids
Shorten

Question 18

Mitosis

Step 3 Chromosomes line up at the ……. and ……. fibres attach to each ………

Answer 18

Equator
Spindle
Chromatid

Question 19

Mitosis

Step 4 The spindle fibres shorten and pull the ………. apart. ……….. gather at opposite ends of the cell

Answer 19

Chromatids

Chromosomes

Question 20

Mitosis

Step 5 The nuclear membrane reforms and the ……… divides

Answer 20

Cytoplasm

Question 21

Mitosis

Step 6 There are now … new cells each with the …. number of Chromosomes as the original cell

Answer 21

2

Same

Question 22

During mitosis the 2 new daughter cells produced why is it important they have the same number of Chromosomes as the original cell?

Answer 22

Same characteristics
Wont function properly if it dosnt
Needs same information

Question 23

What disease can you get from uncontrolled cell division

Answer 23

Cancer

Question 24

Specialised

Answer 24

Own specific job

Question 25

Red blood cell Function | Features?

Answer 25

Transport oxygen | Large surface area

Question 26

Nerve muscle Function | Features

Answer 26

Carrie's electrical signals around body | Long and thin

Question 27

Muscle cell Function | Features?

Answer 27

Allows bone to move | Contains fibres allowing them to shorten

Question 28

***Sperm Cell Function | Features?

Answer 28

Fertilises an egg cell | Long tail used for swimming

Question 29

Examples of tissue

Answer 29

Muscle | Lineing of lumgs

Question 30

What is an organ made of

Answer 30

Tissues

Question 31

Examples of organs

Answer 31

``` Heart Lungs Brain Roots Stems ```

Question 32

Unspecialised cell

Answer 32

Stem Cells

Question 33

Sources of stem cells

Answer 33

Embryonic Stem Cells | Tissue Syem Cells

Question 34

Tissue Stem Cells

Answer 34

Present in bone marrow, brain and blood | Adult Stem cells are used to repair damaged tissue

Question 35

Embryonic Stem Cells

Answer 35

Taken from embryos. Embryo is destroyed after stem cells are taken

Question 36

Problems with stem cell therapy

Answer 36

Pass on viruses or other diseases, may turn cancerous