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SCIENCE 8A TEST PREP
For the test on Friday i made a stack of everything we need to know.
| Question | Answer |
|---|---|
| Why are unicellular organisms so small? | If the unicellular organisms were bigger there would be no room for diffusion. But since the unicellular organisms are so small there is lots of room for diffusion. |
| What is diffusion? What is osmosis? | Diffusion means the movement of particles Osmosis is diffusion of water from a hypo tonic solution. |
| What Cells are used for movement? what are they used for? | myocyte cells Muscle cells That allow us to move all parts of our body |
| What Cells are used for Reaction? what are they used for? | Nerve cells are the basic unit of the nervous system and send messages to the brain, spinal cord, etc |
| What Cells are used for growth? what are they used for? | Osteoblasts Which help turn cartilage- Which makes most of a babys structure- into hard bones as we grow into kids then adults. |
| What Cells are used for Reproduction? what are they used for? | Gametes are the reproductive cells And are the reason humans can reproduce. |
| What Cells are used for excretion? what are they used for? | Liver cells are responsible for helping the process of excretion in our bodies specifically hepatocytes they are involved in protein synthesis, protein storage, transformation in carbohydrates. |
| What Cells are used for Exchange of gases? what are they used for? | Red blood cells are responsible for transporting oxygen and carbon dioxide to and from cells |
| What Cells are used for nutrients? what are they used for? | Absorptive cells are the main epithelial cell type lining the lumen of the small intestine and colon. |
| What are the advantages of having specialized cells? | They increase the complexity of the living thing making it able to complete a wider range of tasks. This is because each specialized helps allow the living thing to do something different. |
| What are the disadvantages of having specialized cells? | There aren't many disadvantages to having specialized cells except for the fact that they take up a lot more energy the unspecialized cells. |
| What are three different plant cells | 1. Leaf cells 2. Plant stem cells 3. Cells in a plant root |
| What are the key functions of leaf cells? | Converts the suns energy into food for itself |
| What are the key functions of Plant stem cells? | Transports water and material through the plant |
| What are the key functions of cells in a plant root? | Absorb water and nutrients from the soil and transport these resources to the stem. |
| What are the most common effects of dehydration? (there are 3) | Sweating- You loose water when you sweat that is why it is important to drink fluids when you play sports or execise Fever- Generally when people have fevers they become very hot and loose a lot of fluid Vomiting/ diarrhea- severe loss of water. |
Created by:
8A_Collins
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