Multicellular and Unicellular Organisms

Question 1

Prokaryotes Definition:

Answer 1

Unicellular organisms that can be bacteria or archaea

Question 2

Eukaryotes

Answer 2

Can be unicellular OR multicellular can be protists, plants, animals, or fungi

Question 3

Unicellular organisms?

Answer 3

Carry out all life functions on their own, they reproduce, metabolize, and grow independently within the cell. An example of this is a bacteria.

Question 4

Multicellular organisms?

Answer 4

An organism made out of many cells
- use cell specialization
- cells become efficient in one process needed for the multicellular organisms to survive
- organisms dependent on other cells to survive

Question 5

Colony

Answer 5

A unicellular organisms living together/working together

Question 6

Colonies vs. Multicellular organisms

Answer 6

cells in colonies can survive/do things on their own

cells in multicellular organisms are dependent on each other for survival

Cells in colonies have cell specialization but CAN switch back

cells in multicellular organisms are specialized and can NOT switch back

Question 7

Example of unicellular and multicellular organisms?

Answer 7

Unicellular: Bacteria

Multicellular: Squirrel

Question 8

Levels of organization in a an organism?

Answer 8

Cells –> Tissue –> Organ –> Organ sytem

Question 9

Levels of organization in biology?

Answer 9

cells, tissues, organs, organ systems, organism, population, community, ecosystem, biosphere

Question 10

4 types of tissue

Answer 10

Epithelial:
- protects, absorbs, secretes
- Ex: Skin

Connective:
Supports, protects, + gives structure to tissues + organs in body
Ex: Fat

Muscle Tissue:
- voluntary movement
- involuntary movement
Ex: Cardiac muscle in heart

Nervous Tissue:
- sends + receives messages
Ex: Spinal cord