B2 Cell Organisation (page 24)

Question 1

Some organisms contain loads of cells, but how do all these cells end up making a human or squirrel…etc?

Answer 1

The answer is organisation. (without it, they’d just make a meaty splodge).

Question 2

Large Multicellular Organisms are made up of what?

Answer 2

Organ Systems.

Question 3

Cells are the basic building blocks that make up what?

Answer 3

all living organisms.

Question 4

What are specialised cells? (covered this on page 14)

Answer 4

specialised cells carry out a particular function.

Question 5

What is the process called, by which cells become specialised for a particular job?

Answer 5

differentiation.

Question 6

When do Differentiantion occur?

Answer 6

it occurs during the development of a multicellular organism.

Question 7

What do specialised cells form?

Answer 7

they form tissues, which form organs, which form organ systems.

Question 8

Large multicellular organism (e.g. squirrels) have different systems inside them, what are they for?

Answer 8

for exchanging and transporting materials.

Question 9

What is ‘Tissue’?

Answer 9

Tissue is a group of similar cells that work together to carry out a particular function.

Question 10

Can Tissue include more than one type of cell?

Answer 10

yes

Question 11

What is Muscular Tissue (in mammals, like humans)?

Answer 11

Muscular tissue contracts (shortens) to move whatever it’s attached to.

Question 12

What is ‘Glandular tissue’ (in mammals like humans)?

Answer 12

Glandular tissue, makes and secretes chemicals like enzymes and hormones.

Question 13

Where is ‘Epithelial Tissue’ (in mammals, like humans?

Answer 13

Epithelial tissue covers some parts of the body, e.g. the inside of the gut.

please look at page 24 diagram.

Question 14

finish the sentence;

Similar Cells are organised into…..

Answer 14

Tissues.

Question 15

finish the sentence;

Tissues are Organised into…….

Answer 15

Organs

Question 16

What is an ‘Organ’?

Answer 16

an organ is a group of different tissues that work together to perform a certain function.

Question 17

The Stomach an organ made of tissues, name the tissues?

Answer 17

1) Muscular tissue - which moves the stomach wall to churn up the food.

2) Glandular tissue - which makes digestive juices to digest food.

3) Epithelial tissue - which covers the outside and inside of the stomach.

Question 18

Organs are organised into what?

Answer 18

Organ systems

Question 19

What is an ‘Organ System’?

Answer 19

its a group of organs working together to perform a particular function.

Question 20

The digestive system (found in humans and other mammals breaks down and absorbs food, what organs make this up?

Answer 20

1) Glands (e.g. the pancreas and salivary glands). which produce digestive juices.

2) The stomach and small intestine , which digest food.

3) The liver, which produces bile.

4) The small intestine, which absorbs soluble food molecules.

5) The large intestine, which absorbs water from undigested food leaving feaces (poop/waste)

Question 21

Organ systems work together to make what?

Answer 21

entire organisms.

Please look at the organs on page 24, you need to know where these organs are on a diagram) - see pg 28 too.

Question 22

An organism consists of what?

Answer 22

organ systems, which are groups of organs, which are made of tissues, which are groups of cells working together.

Question 23

The bladder is an organ. Explain what this means (2 marks)?

Answer 23

That it is made up of different tissues (1 mark), that work together to perform a particular function (1 mark).