Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Unit 3 Biology Kloet
| Question | Answer |
|---|---|
| What is a cell? | the basic structural unit of life |
| Leeuwenhoek | observed live cells and observed greater detail |
| Hooke | was the first to identify cells and name them |
| Schleiden | concluded that plants are made of cells |
| Virchow | proposed that all cells come from other cells |
| Schwann | concluded that animals and, in fact, all living things are made of cells |
| Cell Theory | The idea that cells are the fundamental units of life |
| Cell Theory 1: | All organisms are composed of one or more cells and their products |
| Cell Theory 2: | All Cells come from the division of preexisting cells (therefore they must contain genetic info) |
| Cell Theory 3: | All cells carry out chemical reactions of life |
| Two basic cell types? | Prokaryotic and Eukaryotic |
| Which cell has a nucleus? | Eukaryotic |
| Which cell does not have a nucleus? | Prokaryotic |
| Which cell is single-celled? | Prokaryotic |
| Which cell is multi-cellular? | Eukaryotic |
| Which cell contians many membrane-bound organelles | Eukaryotic |
| Which cell lacks internal membrane bound organelles | Prokaryotic |
| Both cells have: | cell membrane, genetic material, ribosomes, and cytoplasm. |
| Fluid Mosaic Model: | Describes the arrangement of molecules making up a cell membrane. |
| Selective Permeability | Allows some materials to cross, enables cell to maintain homeostasis |
| Receptors: | Molecules that deduct a signal molecule and perform an action in response |
| Ligand Molecules | Signal molecule |
| Intracellular Receptor | Proteins located inside the cell and bind to ligand molecules that CAN cross the membrane |
| Membrane Receptor | Proteins located in the membrane; binds to ligand molecules that CANNOT cross the membrane and causes changes in shape to transmit message to inside the cell |
| Passive Transport: | 3 types movement of molecules from a high concentration WITHOUT USING ENERGY. |
| Diffusion: | Movement of molecules from high concentration to low |
| Osmosis: | movement of H2O from high H2O to lower concentration of H2O |
| Concentration Gradient: | difference in concentration |
| Hypertonic: | the solution that has the highest concentration of particles |
| Hypotonic: | the solution that has a lower concentration of particles compared with another solution |
| Isotonic: | solution that has an equal concentration of particles compared with another solution |
| Facilitated Diffusion: | movement from high concentration to low through a membrane protein. NO energy required. |
| Active Transport: | movement across the membrane that requires energy (ATP) |
| Endocytosis: | folding membrane that brings material INTO a cell. REQUIRES ENERGY |
| Exocytosis: | movement of materials OUT of a cell. REQUIRES ENERGY |
| Which organelle acts as an intracellular highway? | Endoplasmic Reticulum |
| Which organelle does Bacteria not have? | Golgi Apparatus |
| Cell Walls are; rigid or flexible? | rigid |
| Cell membrane is; rigid or flexible | flexible |
| Phospholipid contains: | Charged phosphate group, Glycerol, and two fatty acid chains |
| Phosphate group is polar or nonpolar? | Polar (charged) |
| Glycerol is polar or nonpolar? | Polar (charged) |
| Fatty Acid Tail is polar or nonpolar? | Nonpolar |
| What strengthens the cell membrane? | Cholesterol |
| What helps materials cross the membrane and are also a part of the cytoskeleton? | Proteins |
| What helps identify cell types? | Carbohydrates |
| A cell may transport a substance in _______ if the substance is too large to cross the membrane. | vesicles |
| During endocytosis, the vesicle membrane fuses witha lysosome, and the membrane and its contents are broken down by lysosomal __. | enzymes |
| Phagocytosis: | means "cell eating." It describes a type of endocytosis |
Created by:
100001410237198
Popular Biology sets