Biology Topic Practice

Binary Fission

Bacteria multiply by simple cell division called binary fission, as often as once every 20 minutes if conditions are right.

Can you calculate the number of bacteria after 5 divisions?

What is Binary Fission?

"Binary fission is the process by which prokaryotic organisms, like bacteria, reproduce by dividing into two approximately equal parts."

Question 1

Which statement about bacterial cells is correct?

Question 2

How do bacterial cells usually compare in size with plant and animal cells?

Question 3

In a bacterial cell, what are plasmids?

Multiplying Bacteria

Bacterial populations can grow exponentially if they have enough nutrients and the suitable temperature.

Division involves the replication of DNA and splitting of the cytoplasm.

Exam Tip

Mean division time is the average time it takes for one bacterial cell to divide into two.

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