Cell Theory and Levels of Org
What is the order of systems in the organization within our bodies beginning with the smallest (cell) and going to the largest.
Cells --> Tissues --> Organs --> Organ Systems --> Organism
What is a producer and how is it different than a consumer?
An organism that creates its own food, by using sunlight, in a process known as photosynthesis.
A consumer is an organism that must eat other organisms to gain energy.
Which organelle is the control center or the "brain"?
How is most information gathered to send to our brain in order to get a response?
Our senses: sight, hear, smell, taste, touch
Do single-celled organisms have organelles?
No. All jobs/functions must be performed by that single cell in order for the organism to survive.
True or false: If you can't see it with the naked eye, then it is not living
FALSE!
In a plant body, what extra piece do the cells have to make them stand rigid and tall?
A cell wall
What are chloroplasts?
They collect the sunlight for plants.
What is the the difference between responding using behaviors vs responding due to memories?
Behaviors: you leaving or avoiding an area if you know there is danger
Memories: heart rate may increase in a stressful situation that you remembered
Why are there different organelles in a cell?
So the jobs/functions can be split up and the whole thing can work to better the whole.
What is structure?
What is function?
How something is shaped for the job it does.
The job that structure completes.
How do plants move nutrients?
How do plants get rid of waste?
Through the vascular tissue (xylem and phloem)
Through the stomata
What organisms are the cell membrane and the cell wall found in? Why do they both exist?
Cell membrane is found in all cells (single, multi - plant and animal). Cell wall is found only in plants.
Membrane: allows only certain materials to enter (they can't be too big or are denied as well)
Wall: extra support for plants to keep them standing tall
The body maintaining a stable, internal environment
Why do humans have more cells and not bigger cells than mice?
Because there is a limit to cell size. This is restricted by the time it takes materials to reach all parts of the cell.
How do the levels of organization allow an organism to survive? (Breakdown what each level is/does)
Cells: work together, performing similar jobs
Tissues: groups of cells with the same job
Organs: groups of tissues with the same job
Organ systems: 2 or more organs
Organism: the whole
Which two systems are responsible for movement and support within the body?
Muscular and Skeletal
Which organelles are involved in the making of proteins and transporting of those proteins??
(HINT: the golden packer, transporter, and one makes some nice proteins.)
Golgi Apparatus, E.R., and ribosomes
Describe how the homeostasis feedback loop works. Use an example to explain.
A stimulus (cold) is felt by the receptors (skin) in our body. These receptors send a message through the nervous system (neurons) to the brain. The brain registers this information and sends a response (effector) to correct the temperature imbalance. In this case, we would get goosebumps causing our bodies to shiver which warms them up.
Cells have to remain small in order to survive. Why?
So that nutrients can enter all parts of the cell and wastes leave the cell faster enough to support the organisms functions.
What is differentiation?
Sundews have weakly developed roots and live in soil that does not contain a lot of nutrients. How are they able to survive?
They have adapted to capturing small insects, such as a fly, and digest this in order to get the necessary nutrients to survive.
Why does a cell have organelles?
What are the 4 different lobes in the brain responsible for?
Frontal: planning, behavior and emotion
Temporal: hearing and language
Occipitial: vision
Parietal: taste, temperature, and touch
If I were to observe a tree and all the cells involved with the tree, what would I have to look at?
Part of the leaf, stem (trunk), and root. This would show me all the different types of cells that the tree contains.