Topic 5 ~ Cells And Classification

Question 1

What is Classification?

Answer 1

Classification is the process by which people place things into groups based on similar characteristics they possess.

Question 2

What organelles are present in animal and plant cells?

Answer 2

Nucleus, cell membrane, cytoplasm, mitochondria, vacuole

Only in plant cells: Chloroplast and cell wall

Question 3

Why do plant cells need two extra organelles?

Answer 3

Plant cells need a cell wall because they do not have a spine. The cell wall is a rigid structure that provides support for the plant cell.

Plant cells also need chloroplast. Chloroplast is a site of photosynthesis which converts carbon dioxide and water into glucose and oxygen.

Question 4

What is a specialised cell?

Answer 4

A specialised cell is a cell that has become differentiated to carry out a particular function.

Question 5

What is a white blood cells function and structure?

Answer 5

Structure: They have a flexible shape to help it engulf (eat) disease organisms. They have a nucleus.

Function:

• These cells are found in You blood.
• They are attracted to disease and bacteria that enter your body.
• They then eat any bacteria or disease so the microbe can’t infect you and make you ill.

Question 6

What is a plant’s root hair cells function and structure?

Answer 6

Function:
They absorb minerals and water from the soil.

Structure:

• Large surface area to absorb lots of water.
• Thin cell wall to allow water to pass through easily.
• Doesn’t contain chloroplasts, like other plant cells.

Question 7

MRS GREN:

Answer 7

Move: Move in some way.
Respire: Breathe.
Sensitivity: Detect changes from environment.
Growth: Grow.
Reproduce: Produce offspring.
Excretion: Get rid of waste.
Nutrition: Intake and use of nutrients.

Question 8

Hierarchy for Living Things ~ Broadest Group To Most Specific Group:

Answer 8

Kingdom
Phylum
Class
Order
Family 
Genus
Species 

King Phil Classes Ordinary Families as Generous and Special.