Biology Lesson 1 Key Concepts

Question 1

The three domains

Answer 1

Bacteria, archaea, and eukarya

Question 2

The scientific process

Answer 2

1. Make an observation
2. Ask questions
3. Formulate a hypothesis and an alternate hypothesis
4. Make a prediction
5. Design an experiment
6. Conduct the experiment
7. Collect data, analyze data, and report results
8. Draw conclusion

Question 3

Describe: Plasma Membrane

Answer 3

Composed of phospholipid bilayers with embedded glycoproteins. It is semipermeable, and controls the passage of organic molecules, ions, water, and oxygen in/out of the cell. Cellular waste products leave through it as well

Question 4

Prokaryotic vs. Eukaryotic

Answer 4

Prokaryotic: No nucleus, no membrane-bound organelles, unicellular, archaea & bacteria

Eukaryotic: Membrane-bound nucleus, membrane-bound organelles, multiple rod shaped chromosomes where DNA is stored

Question 5

Bacteria structure

Answer 5

Hair-like appendages called pili on the outside, cell wall,