What are the 8 characteristics of living things?

What are the 8 characteristics of living things?

(1) made up of cells
(2) reproduce
(3) based on universal genetic code
(4) grow and develop
(5) obtain and use materials and energy
(6) respond to their environment
(7) maintain a stable internal environment
(8) change over time

What are five of the levels of organization that biologists study?

What are five of the levels of organization that biologists study?

- Biosphere
- Ecosystem
- Community
- Population
- Organism
- Groups of Cells
- Cells
- Molecules

What are the advantages and disadvantages of light microscopes from electron microscopes?

What are the advantages and disadvantages of light microscopes from electron microscopes?

Light Microscopes:

- can study dead organisms and some tiny organisms and cells while they are still alive.

- cannot produce clear images of objects smaller than 0.2 micrometers.

Electron Microscopes:

- can produce images almost 1000 times more detailed than light microscopes.

- cannot observe living cells.

What is the difference between a theory and a hypothesis?

What is the difference between a theory and a hypothesis?

Answer:


- A hypothesis is a possible explanation for scientific findings in an experiment.

- A theory is a tested hypothesis that gets the same results over and over again.

Because you may come in contact with organisms you cannot see, what safety procedure MUST followed?

Because you may come in contact with organisms you cannot see, what safety procedure MUST followed?

Answer: Wash your hands thoroughly after completing the activity.

What are the ways scientists generate hypotheses?

What are the ways scientists generate hypotheses?

Answer:

- using informed, creative imagination.
- using logical inference.
- using prior knowledge.