The prokaryotic cell

Question 1

binary fission

Answer 1

when cells replicate and are used by prokaryotic cells.

Question 2

exponential growth

Answer 2

binary fission is an example of exponential growth and doubling the number of cells after every round of replication.

Question 3

The process of binary fission

Answer 3

1. First the circular chromosome is uncoiled and the DNA and plasmid are replicated.
2. The cell is preparing to split into two cells
3. cytokinesis occurs. they pinch inwards and create a septum.
4. a cell wall and membrane are formed

Question 4

cytokinesis

Answer 4

forms two daughter cells

Question 5

septum

Answer 5

the wall that divides the cells and is formed during binary fission.

Question 6

DNA replication

Answer 6

The two strands of DNA are unwound by DNA helicase to create two separate strands ( leading and lagging strands). Nucleotides can only be added to the 3 prime ends ( leading strand ).

Question 7

Leading strand

Answer 7

The strand that has a three prime end and can continue to add new nucleotides with the help of DNA polymerase III

Question 8

lagging strand

Answer 8

a lagging strand has five rime ends so it can’t add more nucleotides to itself. This means that an enzyme called primase creates a three-end strand by laying down RNA. Polymerase III will then extend the RNA from the three-point end created to the pre-existing five prime ends.