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unit 2 apbio
unit 2 review/ interactive notes for MCQ test: cell structure and function
| Question | Answer |
|---|---|
| the cell membrane has ____ meaning that it controls the transport of some materials in or out of the cell | selective permeability |
| since glucose is large and somewhat polar, it needs a special TRANSPORT PROTEIN to help diffuse across natural membranes. this is called ___ Diffusion. | facilitated |
| in a ___ solution, water will flow into a cell | hypotonic |
| zucchini cores placed in distilled water would ___ mass | gain |
| simple diffusion will occur naturally if we have high concentration on one side of a membrane, and low concentration on the other side. this situation is called a ___ | concentration gradient |
| name three cell components that prokaryotes and eukaryotes have in common: | DNA, membrane, ribosomes |
| ___ are organelles with specialized proteins called digestive ___ to break down other molecules. These enzymes were originally produced by ___ on the rough ___ | lysosomes, enzymes, ribosomes, endoplasmic reticulum (er) |
| plant cells that gain large amounts of water experience ___ pressure. | turgor |
| in order to increase efficiency in getting food and expelling wastes, a cell will benefit from having a larger ___. this can be achieved by folding the membrane or having a specific shape. | surface area |
| in a membrane, the phospholipid, ___ heads are attracted to water, which is also polar. | polar |
| through facilitated Diffusion, ____ can cause water to flow through a membrane faster than it could otherwise flow without the help of proteins | aquaporins |
| protein | assists with active transport or facilitated diffusion |
| lipid | very non polar and hydrophobic, like oil |
| phosphate | three of these are found in ATP, can store energy |
| phospholipid | consists of a polar head and a non polar tail |
| carbohydrate | glucose, cellulose, sucrose, maltose, dextrose, etc |
| nucleic acid | genetic material found in the nucleus |
| the cell receives a signal to make a certain enzyme, so an mRNA message is instantly sent to a ribosome for special protein synthesis | step 1 |
| after 5 minutes, the AA is detected in the ___ where ribosomes are busy incorporating the AA into the primary structure of a protein | step 2, endoplasmic reticulum (er) |
| after 10 minutes, the AA is detected in a ___ on its way to the golgi apparatus | step 3, vesicle |
| after 20 minutes, the AA is detected in the ___, where the protein gets folded and becomes an enzyme, then packaged into a lysosome | step 4, golgi apparatus |
| after 90 minutes, the AA is detected in a lysosome to be transported elsewhere | step 5 |
Created by:
josie_dr
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