Cells

Question 0

What is Mitochondria

Answer 0

Mitochondria is the powerhouse of the cell, which releases energy

Question 1

Key difference between plant cells and animals cells

Answer 1

Plant cell:
- Cell wall
- Chloroplast
- Bright green from chloroplast
Animal cell:
- Strong definded nucleus from outside of cell
- No cell wall

Question 2

What is the nucleus

Answer 2

Controls the cell, the chemical reactions, how the cell develops and how it reproduces

Question 3

Cell membrane

Answer 3

The ‘skin’ that holds the cell together. It controls what comes into and leaves the cell.

Question 4

What is cytoplasm

Answer 4

A watery, jelly-like mixture that contains many smaller parts where the work of the cell takes place.

Question 5

What is the vacuole

Answer 5

There may be several very small vacuoles in an animal cell. They may contain wastes or chemicals that are being moved around the cell.

Question 6

Vacuole in plant cells

Answer 6

The vacuole in plant cells is large and occupies most of the cell. It is filled with sap and stores water, wastes and nutrients. When it is full the vacuole pushes against the cell wall and helps to keep the plant rigid.

Question 7

What is chloroplast

Answer 7

Plants make their own food from water and carbon dioxide, using embers from the sun. Photosynthesis takes place in chloroplasts, which are found in the green parts of plants.

Question 8

Cell wall

Answer 8

Plants do not have a skeleton like you, so they need something else to keep them upright and to keep their shape. This is the function of the cell wall, which lies outside the cell membrane.

Question 9

Multicellular organisms

Answer 9

Are made up of millions and millions of cells. Each have there own specialised jobs.

Question 10

Unicellular organisms

Answer 10

One single cell. Example: bacteria

Question 11

Specialised animal cells

Answer 11

• muscle cells
• nerve cells
• blood cells
• fat cells

Question 12

Specialised plant cells

Answer 12

• guard cells
• conducting cells
• root cells
• structural cells
• photosynthetic cells

Question 13

Tissue

Answer 13

Cells that perform the same function are not scattered throughout the body; they are grouped together to form tissues.

Question 14

Organs

Answer 14

The next level of organisation is into organs. An organ is a structure that contains at least two different types of tissue that work together to complete a task.

Question 15

Organ systems

Answer 15

Organs are then arranged into organs systems. Organ systems have two or more different organs that work together.

Question 16

4 different tissues in the human body

Answer 16

• epithelium
• connective tissue
• muscle tissue
• nerve tissue