Unicellular organisms (a deeper dive into it!)

Question 1

When was the first unicellular organism estimated to exist?

Answer 1

4 billion years ago… a LONG time ago!

Question 2

What are the two types of unicellular organisms?

Answer 2

1. Prokaryotic organisms
2. Eukaryotic organisms

Question 3

What are prokaryotic organisms?

Answer 3

A unicellular organism without protective membranes encasing the nucleus and mitochondria.

Question 4

What are eukaryotic organisms?

Answer 4

Any organism (unicellular or multicellular) whose nucleus and other organelles are encased in mambranes.

Question 5

How do unicellular organisms get their energy? Provide an example.

Answer 5

They get their energy from other organisms or photosynthesis.

For example, fungi grows on trees and gets it’s energy from the tree.

Question 6

Unicellular organisms absorb oxygen and diffuse carbon dioxide out of the cell.

True or False?

Answer 6

True!

Question 7

How do unicellular organisms move around?

Answer 7

Option 1: using cilia, several ahir-like strands

Option 2: using flagellum, one tail-like strand