Cell Diversity

Question 1

Tissues

Answer 1

Groups of similar cells modified for a particular function

Question 2

Epithelial tissue

Answer 2

Covers the internal and external surfaces of the body eg.skin

Question 3

4 types of animal tissue

Answer 3

Epithelial
Connective
Muscular
Nervous

Question 4

Connective tissue

Answer 4

Cartilage and bone, blood, tendons and ligaments

Question 5

Muscular tissue

Answer 5

Can contract

Found in muscles

Question 6

Nervous tissue

Answer 6

Made up of nerve cells called neurons

Question 7

What does connective tissue consist of

Answer 7

A number kid cells spread out in a matrix that is produced by the connective cells

Question 8

Function of connective tissue

Answer 8

Joins and supports body structures

Question 9

Example of connective tissue and why

Answer 9

Blood

Made of red cells white cells and platelets all suspended in matrix called plasma

Question 10

Nervous tissue consist of

Answer 10

Nerve cells called neurons adapted to carry electrical impulses to and from the brain

Question 11

Organs

Answer 11

Structures composed of a number of different tissues that work together for a particular function

Question 12

Organ system

Answer 12

A number of organs working together to carry out one or more functions

Question 13

What does the circulatory system consist of

Answer 13

Heart 
Blood vessels 
Blood
Lymph
Lymph vessels

Question 14

Biological organisation and example

Answer 14

Cell - tissue 
 Tissue - blood
 Organ - heart
 Organ system - circulatory 
 Organism - human

Question 15

Tissue culture

Answer 15

The growth of tissues in a sterile nutrient medium outside of an organism

Question 16

In-Vito

Answer 16

Inside the body

Question 17

In vitro

Answer 17

In glass

Growing tissue in an artificial environment in the laboratory

Question 18

Suitable conditions for tissue culturing

Answer 18

Sterile conditions 
Nutrients 
Oxygen 
Growth factors and hormones 
pH

Question 19

Nutrients needed for tissue culturing

Answer 19

Glucose
Vitamins
Minerals

Question 20

Why are sterile conditions necessary for tissue culturing?

Answer 20

The growth of microorganisms and the accumulation of their waste products can print the growth of, or kill, the tissue

Question 21

3 uses of tissue culturing

Answer 21

Cancer research
Skin grafts
Micropropagation

Question 22

Cancer research as a use of tissue culturing

Answer 22

Cancer cells can be grown in large numbers so that scientists can discover make about their structure and how they work
This may lead to the development of me cancer treatments and cures

Question 23

Skin grafts as a use of tissue culturing

Answer 23

Can be use to grow new skin for burn victims
Stems cells can be used to grow new skin. Stem cells can be embryonic ( from the early embryo) o from adults (in bone marrow)
These stem cells can develop into other body tissues

Question 24

Micropropagation of plants as a use of tissue culturing

Answer 24

Growing large numbers or plants from very small pieces or plant tissue
Cut into small pieces
Grows by mitosis on a suitable medium in the lab
Forms callous (clump of cells)
Nutrients (growth regulators eg.auxin) cause callous to form young plant
Can be transplanted when large enough into soil

Question 25

Benefits of micropropagation

Answer 25

Large number in short time
Genetically identical
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