Unit 2 - Organisms

Question 1

What is the function of the stomach?

Answer 1

Churning of food

Question 2

What is the function of the heart?

Answer 2

Pump Blood

Question 3

What is the function of the kidney?

Answer 3

Maintenance of water and removal of soluble waste

Question 4

What is the function of the lung?

Answer 4

Exchange of the respiratory gases.

Question 5

What is the function of the skin?

Answer 5

Protection

Question 6

What is the function of the root? (Plant)

Answer 6

Absorpition

Question 7

What is the function of the Stem?

Answer 7

Transport water and food

Question 8

What is the function of the flower?

Answer 8

Production of seeds

Question 9

What is the function of the leaf?

Answer 9

Photosynthesis

Question 10

What is the order of the parts of an organism?

Answer 10

Cells
Tissues
Organs
Systems
Organism

Question 11

What is stage 1 of mitosis?

Answer 11

DNA is replicated to form homologous chromosomes.

Question 12

What is stage 2 of mitosis?

Answer 12

Nuclear membranes break down.

Question 13

What is stage 3 of mitosis?

Answer 13

Homologous chromosomes line up along the equator of the cell.

Question 14

What is stage 4 of mitosis?

Answer 14

Spindle fibres form and pull sister chromatids to opposite poles of the cells.

Question 15

What is stage 5 of mitosis?

Answer 15

New nuclear membranes form around the chromosomes at each pole of the cells.

Question 16

What is stage 6 of mitosis?

Answer 16

The cell cytoplasm splits to form two new, genetically-identical cells.

Question 17

What is the function of mitosis?

Answer 17

Mitosis provides new cells for growth and repair of damaged cells and maintains the diploid chromosomes complement.

Question 18

What are stem cells?

Answer 18

They are unspecialised cells which can divide in order to self-renew.

Question 19

What is the hierarchy of organisms?

Answer 19

Cells –> Tissues –> Organs –> System = Organism

Question 20

What does CNS stand for?

Answer 20

Central nervous system

Question 21

What do CNS consist of?

Answer 21

The brain and spinal cord

Question 22

What is the function of the Cerebrum?

Answer 22

Controls conscious thought

Question 23

What is the function of Cerebellum?

Answer 23

Controls balance and coordinated movement.

Question 24

What is the function of the Medulla?

Answer 24

Controls involuntary actions (digestion,breathing rate and heart rate)

Question 25

What are the three types of neurons?

Answer 25

Sensory Inter Motor

Question 26

What is the function of sensory neurons?

Answer 26

Carries electrical impulses from the receptors of sense organs to CNS.

Question 27

What is the function of the inter neuron?

Answer 27

Carries electrical impulses from the sensory neurons to the motor neuron.

Question 28

What is the function of the motor neuron?

Answer 28

Carries electrical impulses from the inter neuron to the effector.

Question 29

What hormones do blood glucose regulation involve?

Answer 29

Insulin and glucagon

Question 30

What are changes in the concentration of blood glucose detected by?

Answer 30

Cells

Question 31

What does the pancreas release when blood glucose concentration increases?

Answer 31

Insulin

Question 32

What does the pancreas release when blood glucose concentration decreases?

Answer 32

Glucagon

Question 33

Which cells are haploid?

Answer 33

Gametes

Question 34

What is the male gamete called?

Answer 34

Sperm

Question 35

What is the female gamete called?

Answer 35

Egg

Question 36

Where is the male gamete in plants located?

Answer 36

In the Pollen Grains

Question 37

Where is the female gamete found in plants?

Answer 37

Ovule

Question 38

What is the function of the sepals?

Answer 38

Protect the unopened flower bud

Question 39

What is the function of the petals?

Answer 39

May be brightly coloured to attract insects

Question 40

What is the function of the stamens?

Answer 40

The male parts of the flower consisting of the anther held up on the filament.