A2.1 Origin of Cells

Question 1

What does cell theory state?

Answer 1

1. All organisms are made up of 1 or cells.
2. Cells are the smallest unit of life.
3. All cells come from pre-existing cells.

Question 2

What are the functions of life

Answer 2

1. Homeostasis
2. Metabolism
3. Response
4. Growth
5. Reproduction
6. Excretion
7. Nutrition

Question 3

What does the pasteur experiment prove?

Answer 3

Living organisms do not spontaneously appear

Question 4

How did cells come into existence?

Answer 4

1. Organic molecules must have existed and been synthesised from abiotic molecules.
2. Assembly of smaller molecules into larger ones must have been possible, forming polymers.
3. Membranes must have been formed to enclose all these molecules.
4. Molecules that can replicate must have existed in order for inheritance to occur.