| Characteristics of Life | History of Life/Life Functions | Classification | Cell Organelles | Cell Membrane |
| 5 | 5 | 5 | 5 | 5 |
| 10 | 10 | 10 | 10 | 10 |
| 15 | 15 | 15 | 15 | 15 |
| 20 | 20 | 20 | 20 | 20 |
| 25 | 25 | 25 | 25 | 25 |
| Final Question | ||||
Why is it hard to define life?
Why is it hard to define life?
There might be some life forms that don't have all the necessary characteristics.
How do you know that the single-celled organism shown above is alive (must use a characteristic of life)?
How do you know that the single-celled organism shown above is alive (must use a characteristic of life)?
Cells
All living things have several characteristics in common. Choose one of these characteristics and write one sentence that describes or explains that characteristic.
All living things have several characteristics in common. Choose one of these characteristics and write one sentence that describes or explains that characteristic.
Evolution
Cells
DNA
Grow & Develop
Reproduce
Maintain homeostasis
Respond to stimuli
Metabolism
Viruses act as an infectious agent. They cause a variety of diseases. Viruses cannot produce more viruses on their own, but cause the host organism to replicate more viruses. Most scientists do not consider viruses to be alive. A valid reason for accepting that viruses are nonliving things is that
- no living thing can cause a disease
- viruses are inorganic molecules
- viruses contain all of the material needed to reproduce
- viruses cannot carry out reproduction independently
Viruses act as an infectious agent. They cause a variety of diseases. Viruses cannot produce more viruses on their own, but cause the host organism to replicate more viruses. Most scientists do not consider viruses to be alive. A valid reason for accepting that viruses are nonliving things is that
- no living thing can cause a disease
- viruses are inorganic molecules
- viruses contain all of the material needed to reproduce
- viruses cannot carry out reproduction independently
4. they cannot carry out reproduction independently
Name as many of the eight characteristics of life as you can remember.
Name as many of the eight characteristics of life as you can remember.
Evolution
Cells
DNA
Grow & Develop
Reproduce
Maintain homeostasis
Respond to stimuli
Metabolism
Which cell organelle is closely related to the process of excretion?
Which cell organelle is closely related to the process of excretion?
Cell membrane, lysosome
How long has the earth been around?
How long has the earth been around?
4.6 billion years
Describe what scientists think the first life form was like.
Describe what scientists think the first life form was like.
A simple, single-celled organism (likely a bacteria).
Define homeostasis.
Define homeostasis.
Maintaining a stable internal environment.
Give me an example of homeostasis.
Give me an example of homeostasis.
Regulating body temperature
What do scientists use a dichotomous key for?
What do scientists use a dichotomous key for?
To identify species
Why did scientists start assigning scientific names?
Why did scientists start assigning scientific names?
So that there would only be one name for each organism
Which bird is bird X?
Which bird is bird X?
Platyspiza
Are humans more closely related to lizards or salamanders?
Are humans more closely related to lizards or salamanders?
Lizards
Which letter is the common ancestor of armadillos and salamanders?
Which letter is the common ancestor of armadillos and salamanders?
X
What is the main function of the nucleus?
What is the main function of the nucleus?
Control center
Which cell organelle provides energy (ATP) for the cell?
Which cell organelle provides energy (ATP) for the cell?
mitochondria
Which cell organelle is most involved in protein synthesis?
Which cell organelle is most involved in protein synthesis?
Ribosome
Which letter indicates a cell structure that directly controls the movement of molecules into and out of the cell?
Which letter indicates a cell structure that directly controls the movement of molecules into and out of the cell?
3 - cell membrane
Tell me the differences between plant cells and animal cells.
Tell me the differences between plant cells and animal cells.
Chloroplasts, cell wall, large central vacuole
What is the main job of the cell membrane?
What is the main job of the cell membrane?
Controls what enters and leaves the cell
Which cell structure is being shown in the three-dimensional diagram?
Which cell structure is being shown in the three-dimensional diagram?
Cell membrane
Draw or explain what it means to be "selectively permeable"
Draw or explain what it means to be "selectively permeable"
Only certain things can get in and out of the cell
Most cell membranes are composed principally of
- DNA and ATP
- Proteins and lipids
- Chitin and starch
- Nucleotides and amino acids
Most cell membranes are composed principally of
- DNA and ATP
- Proteins and lipids
- Chitin and starch
- Nucleotides and amino acids
2. Proteins and lipids
Draw and label the parts of a cell membrane
Draw and label the parts of a cell membrane
Design a controlled experiment to determine the effect of red light on plant growth. In your experiment, be sure to include:
A hypothesis (If...then...)
A control group
Your independent variable
What data you would collect
Design a controlled experiment to determine the effect of red light on plant growth. In your experiment, be sure to include:
A hypothesis (If...then...)
A control group
Your independent variable
What data you would collect
If I expose plants to red light then they will grow taller.
Plants exposed to regular light
Light color
Height of plants
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