Lab 2&3: Chemistry & Microscope Flashcards
PH
MEASURE OF H+ ION CONCENTRATION
ACID
- below 7
- increased H+ ion concentration
- H+ acceptor
BASE
- above 7
- donor of H+ ion concentration
- increase in OH- concentration
BUFFER
Mixture of base/acid that prevents changes in original PH
Chemical Reaction
Interaction of atoms and molecules in which bonds are formed, broken and rearranged.
Enzyme
A catalyst for reactions by lowering the activation energy and speeding the rate at which the reaction will occur
Solute
Substance that gets dissolved (solid)
Solvent
Present in higher concentration (liquid)
Solubility
How easily a solute will dissolve in a solvent
DNA
String of nucleic acids that contains the genetic info and instructions for building proteins
What is the role of urinary system in PH regulation
It secretes H+ out of the body to become more basic
NORMAL PH RANGE
7.35-7.45
Two factors that can affect rate of reaction
Temperature & PH
As temperature increases, the rate of reaction ______ and as temperature decreases, rate of reaction _____
Increases; decreases
Enzymes
-biological catalyst
-not consumed in reaction
-does not change products
-
An enzyme that has lost its shape
Is denatured and is no longer functional
Which molecules would be expected to dissolve in water
Polar covalent; ionic bonds
Lipase
An enzyme that aids in digestion of fat
Phenol Red
Dye that indicates lipase activity
Yellow color indicates
Significant fat digestion
Acidic PH
Red-orange color indicates
Limited fat digestion
Neutral PH
Pink
No or limited fat digestion
Basic PH
Magnification of the ocular lens on a compound light microscope
10x
Magnification of compound light microscope
40x, 100x, 400x, 1000x
IRIS DIAPHRAGM
controls the amount of light that passes
LAMP
The microscope’s light source
THE LENS THAT PROVIDE 100X MAGNIFICATION
Oil immersion lens
How do you begin using the magnification of the microscope
you begin with the lowest-power magnification
Steps to focus the image on a slide
- low power mag- adjust w/ coarse then fine knob
2. high power mag- adjust w/ coarse then fine knob
