Skibidi Sigma 2.0

Question 1

Explain Cell Division.

Answer 1

A cell can increase in size. When it increases to a certain size, the nucleus of the cell makes a copy of itself and separates into two nuclei. The cell then divides into two identical ‘daughter’ cells, each with a nucleus. The ‘daughter’ cells are identical to the ‘parent’ cell. Each ‘daughter’ cell then increases in size, makes a copy of its nucleus and divides into two again. The splitting of a cell to produce two new cells is called cell division. As this process continues, more cells are formed and the organism grows in size. Cell divisions occur in plants and animals throughout their lives and are essential for the growth and replacement of old and damaged cells.

Question 2

Explain how unicellular organisms and multicellular organisms work. Give an example too.

Answer 2

A unicellular organism such as the Paramecium is made up of only one cell. The single cell performs all the functions necessary to keep it alive. Multicellular organisms, however, are made up of different types of cells which specialise in different functions. This is called division of labour. Just as tools have different shapes and structures designed for doing particular jobs, cells have different shapes and structures to carry out different specialised functions.

Question 3

Explain how different types of cells work and how they can help.

Answer 3

(See the cell design section for your answer :3)

Question 4

What substances/materials are used to carry out photosynthesis? Explain in periodic table forms.

Answer 4

Photosynthesis: C O 2 + H 2 O → O 2 (g) + C 6 H 12 O 6

Question 5

Why do our cheeck cells divide once every 24 hours?

Answer 5

Science Tidbit Page 14