The Cell Cycle + Bacterial Growth

Question 1

What is the Cell Cycle?

Answer 1

The Cell Cycle is a regular cycle of cell division seperated by periods of growth

Question 2

What are the 5 stages of the Cell Cycle?

Answer 2

1. Cell grows and replicates their organelle (Interphase)
2. The cell replicates its DNA (most time spent)
3. Mitosis (Nuclei division)
4. Two nuclei form
5. Cellular Division - Two new identical cells form

Question 3

What process do bacterial cells multiply by?

Answer 3

Bacterial cells multiply by Binary Fission. It is a form of Asexual reproduction

Question 4

What are the differences between Asexual and Sexual reproduction?

Answer 4

Asexual:

• 1 parent
• Identical offspring
• Can happen every 20 minutes
• No genetic material mixed
• Happens in bacteria and plants

Sexual:

• 2 parents
• Not identical offspring
• Mixing of genetic material
• Happens slowly over a long period of time
• Happens in humans/animals and plants

Question 5

What affects bacterial replication?

Answer 5

• Inadequate amount of nutrients
• Availability of oxygen
• Incorrect temperature

Question 6

How do you workout the Total number of bacteria present after (n) generations?

Answer 6

Total number = 2^generations x amount of bacteria