lab exam 1 Flashcards
area
length x width
volume
Length x width x height
Density
Mass/ Volume
Boiling point
100 C
212 F
Freezing point
0 C
32 F
Normal body temp
37 C
100 F
average room temp
20 C
70 F
MASS Basic Unit? Measured with what instrument? Nickle = ?g Golfball=? ?g
basic unit is the gram
Triple beam balance
5g =nickle
goofball =46g
VOLUME
Basic unit?
Measured with what instrument?
1mL of H20 weighs ?
Basic unit is the liter
measured with Graduated Cylinder , Beakers, Flasks
1g
LENGTH
Basic unit?
1 penny = ?mm
Basic unit is the Meter
1penny = 19mm
most common glasswear used in Biology
Beaker
Graduated cylinder
Erlenmeyer Flask
Meniscus
water that curves down, you measure the bottom
anabolic
build, construct
Catabolic
breaks down
what are the various macromolecules made out of ?
Lips, nucleotides, proteins, carbs
what are enzymes?
proteins that increase the rate of chemical reactions converting substrate into product.
what is a catalyst?
substances that increase or decrease the rate of a chemical reaction but remain unchanged.
what is a catalase?
key enzyme which uses hydrogen peroxide as it’s substrate ( breaks down hydrogen peroxide into water and oxygen)
what is a positive catalase reaction
will produce bubbles of oxygen
what is a negative catalase reaction
no bubbles form
does not produce catalase.
induced fit theory
binding of a substrate to enzyme causes enzyme shape to change to enhance or inhibit activity
the function of an enzyme
speed up chemical reaction
denatured
enzyme dont function
ase –ending
always enzyme
ose–ending
sugar
proteins
complex chain of amino acids linked together by peptide bonds
Reagent used to test for PROTEIN
Bluret
pale blue NEGative
Purple POSitive
Reagent used to test for SIMPLE SUGAR
Benedicts start with blue solution blue- NO reducting sugan green- little + Orange-little more ++ Red--great amount +++
Reagent used to test for STARCH
Iodine Potassium Iodine (I2KI)
red- NEGative
Black- POSitive
Reagent used to test for LIPIDS
Sudan IV or brown paper bag
red line at top- POSitive result
Disaccharides
2 monosaccharides liked together
polysaccharides
many monosaccharides linked together
Monosaccharides
simple sugars with 3 -7 carbs
what factors can increase enzymatic reactions
and decreased?
Acid level 6.9 -0
room temp
High temp
basic PH level
C to F
c multipled by 1.8 plus 32
Cx1.8+32
F to C
F-32/1.8
F minus 32 devide by 1.8
In measurements L to S
go right
In measurements S to L
go left
