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BIOtest1
biology
| Question | Answer |
|---|---|
| what are the most abundant elements found in living organisms | 1.carbon2. hydrogen3. oxygen4. nitrogen |
| what is the fundamental orgaizational unit of life | cell |
| what is important about carbon that allows for it to make long, complex, stable chains? | ability to bond with atoms to make stable bonds. (4 electrons in outer shell) |
| what is an isomer | molecules that have same molecular formula. same atoms but arranged differently |
| what is an example of an isomer | glucose and frutose |
| what does dehydration reaction do? | links smaller molecules to larger ones |
| example of dehyration reaction | glucose to glycogen; muscle cells |
| what does hydrolysis reaction do? | breaks bonds with larger molecules to smaller ones. water is added to reaction and bond is broken. |
| exp. of hydrolysis | glycogen to glucose |
| what is a charateristic of a carb? what is a function? | hydrophylic, structural material, enegry source for plants and animals |
| what is an exp. of carb monomer? polymer? | m- glucose beadsp-carbohydrate polymer |
| what is different about strach, glycogen and cellulose? | there all made of glucose but arragned differently. (isomers) |
| where is starch found? | in plants |
| enzyme proteins break starch into what? why? | glucose; so your body can burn off enegry |
| where is glycogen found? | liver and muscle tissue |
| what does glycogen do? | it is converted into glucose whenever enegry is needed. |
| cellulose are found where? | in nature, plants |
| why cant you digest cellulose? | no enzymes to break cellulose down |
| what is a charateristic of a lipid? what is funtion? | stores fat for enegry, is a steroid hormone, component of cell membrane. |
| ex. monomer lipidpolymer lipid | m- fatty acid tails and glycerol headsp- monounsaturated fats |
| all life as we know it is | carbon based |
| a virus needs a what to reproduce | host cell |
| living things regulate themsevles though | homeostatsis |
| an organisms mutating and exploiting that muation such that it is more fit in its enviorment is an example of: | adaption |
| in the sientific method you are always trying to prove that your hypothesis is right. | true |
| what one of the following is no componment of nucleotide | base steroid |
| monomers are linked together by_____ into polymers, and polymers are broken down by____ | dehyration, hydrolysis |
| hydrolysis | uses water |
| cholestrol is a what? | base steroid |
| the process of turing an unsaturated fat into a saturated fat with hyrdogen gas is called | hydrogenization |
| what one of the following is not a DNA nucleotide | uracil |
| which one of the following is a mis-pairing of DNA | t-g |
| what one of the following has a plasma membrane | plant cell, animal cell, prokaryote |
| which one is not a eukearyote? | bacteria |
| which organelle would you find in both prokaryotes and eukaryotes? | ribosomes |
| which organelle utilizes enegry to make food? | chloroplast |
| mRNA is read by what oragnelle | ribosomes |
| which organelle would break open if the cell were to commit suicide | lysozome |
| which one of the following does not best describe the plasma membrane? | static unyielding solid sheet |
| what leaves the nuclear pore | mRNA |
| this is the shipping station organelle | golgi body |
| chemical enegry is sotred in what form that a cell can use to perform work | ATP |
| in which organelle does cellular res. occur | mitochondria |
| what is a waste product from cellular respriation | carbon dioxide |
| lactase is an | enzyme |
| which one of the following is an example of cellular work that does not require ATP | diffusion |
| what % of heat is given off during cellular respiration? | 60 |
| amino acids being linked together to form a polypeptide is an example | chemical work |
| which of the following would change the shape of an enezyme | non-competitive inhibitor |
| which is a example of receptor mediated endocytosis | cholestrol binding to liver cells |
| osmosis | allows water to flow though membrane until a state of quilibrium is reached |
| if a cell has a higher concentration of salts inside than in the solution it is placed in, what could happen to cell | it could explode |
| nerve signaling is example of | active transport |
| during the cell cycle, DNA replicated in what phase> | s-phase |
| down syndrom has how many chromosomes | 47 |
| chromosomes are pulled apart during which phase of mitosis | anaphase |
| DNA condenses during which phase of mitosis | prophase |
| cancer is uncontrolled cellular division | ture |
| oncogenese are essentially, good genes gone bad | true |
Created by:
Moll289
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