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Science 4-2
Mrs. Tassin
| Question | Answer |
|---|---|
| what are the smallest cells? | mytoplasm |
| what is mytoplasm? | bacteria |
| what are the largest cells? | bir eggs |
| why does surface area matter | must be adequate |
| name two things every cell has | plasma membrane and organelles |
| name two things that not all cells have | nucleus, membrane bound organelles |
| what is the first thing organelles do? | allow metabolic activities in carious conditions |
| name the second thing organelles do | increase surface area for metabolic activities |
| which type of cell has a nucleus and organnelles | Eukaryotic |
| which type of cell lacks a nucleus and organelles | Prokaryotic |
| all nuclei have what? | cell membrane, DNA/chromosones, cytoplasm, watery gel, ribosomes-RNA and protein that do protein that do protein synthesis |
| what is a the only type of prokaryotic cell? | bacteria |
| what is the size of a eucaryotic cell compared to Procaryotics | 10 times bigger |
| where is the DNA located? | the nucleoid |
| how does DNA control cell activities? | protein synthesis |
| what is a chromatin | proteins forming long fibers to which nuclear DNA is attatched |
| what is chromosome? | coiled up chromosome |
| what is a nuclear envelpe | double membrane with pores |
| what is the nucleolus | consists mostly of RNA and proteins; finctions in synthesis of ribosomes |
| what are organelles made of? | interrelated membranes |
| what are small membrane sacs called? | vesciles |
| what is the major funtion of the endomembrane system? | dividing the cell into sperate compartments |
| smmoth ER (contains/lacks) ribosomes | lacks |
| smooth ER (contains/lacks) enymes | contains |
| what are smooth ER's funtions | synthesize lipids and can store calcium |
| rough ER (contains/lacks) ribosomes | contains |
| describe the location of rough ER | continuous with nuclear envelope |
| what are the functions of rough ER? | making more membranes and to modify proteins to be transported to other organelles or to be secreted by the cell |
| describe golgi bodies | stacks of flattened sacs formed of membranes |
| how is the number of stacks related to? | how active the cell is in secreting proteins |
| what is the function of golgi bodies | process cellular secretions made by ER (modifies them) and packages them for secretion |
| what are lysosomes? | digestive compartments within a cell |
| what do lysosomes contain? | digestive hydrolytic enzymes |
| what are lysosomes made by? | ER then modified by golgi bodies |
| what would happen if lysosomes are ruptured? | the cell would digest itself |
| when does someone get a lysosomal starage disease happen? | when a person is missing one or more of the enzmes normally found in the lysosome |
| what happens to abnormal lysosomes? | fill with indigestible substances, interfering with cell funtions |
| what is Tay-Sach's disease? | a fatal disease that effects the nervous system. |
| what groups of people are Tay-Sachs disease found among? | jewish, irish, french-canadian, and cajun |
Created by:
nickjosephh
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