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59 Cards in this Set
- Front
- Back
what manification is scanner?
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4
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what manification is low power?
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10
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what manification is high power?
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40
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ex/ of ph method that is qualitative
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lithmus paper
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ex/ of ph method that is quantiative
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pH paper
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what is dehydration synthesis?
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building molecules by taking water out
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what is hydrolysis?
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split atoms apart by adding water
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iodine is used when testing for what? & what is the original color?
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starch; amber
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which molecules are polymers?
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carbs, proteins, nucleic acids.
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what are polysaccharides?
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polymers formed by binding monosaccharides
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what color does starch turn when chemical mix is positive?
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purp/blackish
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how do you know if the chemical reaction is pos?
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the color will change
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what indicator is used when testing for glucose & orgin coor?
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benedicts; turquoise
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what idicator is used to test or proteins & what is orig color?
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biuret; royal blue>blue/purp
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what color does pos glucouse test become?
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orange(opposite of blue)
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what is triglyceride?
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bonding of 1 glycerol & 3 fatty acids
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what chemical mixes & stains lipids?
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sudan 3
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what chemical creates emulsion btwn water & lipids
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veggie oil, water & bile salts
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what part of starches molecule changes during reaction?
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enters center of 3D coil
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what part of proteins molecule changes during reaction?
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peptine bond
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what type of cell is an animal cell?
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eukaryotic (has nucleus)
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what is a nucleus?
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membrane-bound structure; contains DNA (genetic moleule)
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what is plasma membrane?
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membrane that forms boundary for cells &acts as selective barrier to molecules into & out of cell
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what does a white blood cell contain?
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nucleus & cytoplasm
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what is cytoplasm?
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semifuid in cell membrane
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what structures are found in epithelium cells?
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cell membrane, cytoplasm, nucleus.
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name type of animal cell (eukaryotic)
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squamous eplithelium, human blood, nervous tissue, cartilage, skeletal muscle
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which animal cell lacks a neuclus?
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red blood cell
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what is cell membrane?
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forms a barrier between the inside of the cell and the outside
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what does a red blood cell contain?
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cytoplasm
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what is found inside cartilage cells?
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matrix
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what is found inside skeletal muscles
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muscle fiber, striation & nucleui
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what is the function of squamous epithelial?
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protect underlying cells or tissue
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what is the function of human red blood cells?
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transport oxygen throughout circulatory system.
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what is the function of human white blood cells?
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defend body from infection
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what is the function of skeletal muscle?
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cause movement of bones at joints
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what is the function of cartilage?
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provide flexible support.
eg. nose, outer ear, trachae |
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what is the function of neuron?
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receptor of stimuli & conducts impluses to muscles & grandular system
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explain the role of red cabbage extract & bromothymol blue
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the reaction color determines the pH level .
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explain the role of pH buffers
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keeps pH stable-takes up excess H+ & OH-
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diff between animal cells & plant cells
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plants have
1.cell wall 2.plastid organelles ex/chloroplasts(photsynthesis) 3 large central vacuole (stores water) |
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what is osmosis?
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diffusion of molecules thru semi-permiable membrane
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what does it mean to have a semi permiable membrane?
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membrane allows small molecules to enter & leave
and blocks big ones |
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what is a solvent
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liquid that dissolves the solute
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what is solute?
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substance that dissolves in liquid solvent producing a solution
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the greater the concentration of a molecule the ____
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slower its rate of difussion
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what is the Law of Diffusion?
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whenever a semi-permeable membrane seperates unequal water concentration; water in high concentration move out to areas of low concentration
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what is osmosis?
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the movement of water in high concentration move out to areas of low concentration
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a solution of higher solute concentration has _____ concentration of water & is called?
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lesser; called HYPERtonic
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when water concentrations are equal it is?
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isotonic
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a solution of lower solute concentration has _____ concentration of water & is called?
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more water concentration & called HYPOtonic
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what is plasmolysis
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as plant lose water (in hypertonic solution) it shrivels & plasma membrane pulls away from cell wall.
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what is cytoplasm?
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semi fliud substance in cell
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what is the nucleus of a cell?
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membrane-bound structure that contains the DNA.
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what is a matrix?
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ground substance
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what is a cell plasma membrane?
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srrounds cell forming the outer boundary
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a nerve cell is also called?
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a neuron
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what do animal cells have that plant cell don't?
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1 -lysosome
2-centriole |
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what do plant cells have that animal cells don't?
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1. central vacuole
2. chloroplast 3. cell wall 4. plasmodesma |