lab exam 1

Question 1

area

Answer 1

length x width

Question 2

volume

Answer 2

Length x width x height

Question 3

Density

Answer 3

Mass/ Volume

Question 4

Boiling point

Answer 4

100 C

212 F

Question 5

Freezing point

Answer 5

0 C

32 F

Question 6

Normal body temp

Answer 6

37 C

100 F

Question 7

average room temp

Answer 7

20 C

70 F

Question 8

MASS
Basic Unit?
Measured with what instrument? 
Nickle = ?g
Golfball=? ?g

Answer 8

basic unit is the gram
Triple beam balance
5g =nickle
goofball =46g

Question 9

VOLUME
Basic unit?
Measured with what instrument?
1mL of H20 weighs ?

Answer 9

Basic unit is the liter
measured with Graduated Cylinder , Beakers, Flasks
1g

Question 10

LENGTH
Basic unit?
1 penny = ?mm

Answer 10

Basic unit is the Meter

1penny = 19mm

Question 11

most common glasswear used in Biology

Answer 11

Beaker
Graduated cylinder
Erlenmeyer Flask

Question 12

Meniscus

Answer 12

water that curves down, you measure the bottom

Question 13

anabolic

Answer 13

build, construct

Question 14

Catabolic

Answer 14

breaks down

Question 15

what are the various macromolecules made out of ?

Answer 15

Lips, nucleotides, proteins, carbs

Question 16

what are enzymes?

Answer 16

proteins that increase the rate of chemical reactions converting substrate into product.

Question 17

what is a catalyst?

Answer 17

substances that increase or decrease the rate of a chemical reaction but remain unchanged.

Question 18

what is a catalase?

Answer 18

key enzyme which uses hydrogen peroxide as it’s substrate ( breaks down hydrogen peroxide into water and oxygen)

Question 19

what is a positive catalase reaction

Answer 19

will produce bubbles of oxygen

Question 20

what is a negative catalase reaction

Answer 20

no bubbles form

does not produce catalase.

Question 21

induced fit theory

Answer 21

binding of a substrate to enzyme causes enzyme shape to change to enhance or inhibit activity

Question 22

the function of an enzyme

Answer 22

speed up chemical reaction

Question 23

denatured

Answer 23

enzyme dont function

Question 24

ase –ending

Answer 24

always enzyme

Question 25

ose--ending

Answer 25

sugar

Question 26

proteins

Answer 26

complex chain of amino acids linked together by peptide bonds

Question 27

Reagent used to test for PROTEIN

Answer 27

Bluret pale blue NEGative Purple POSitive

Question 28

Reagent used to test for SIMPLE SUGAR

Answer 28

``` Benedicts start with blue solution blue- NO reducting sugan green- little + Orange-little more ++ Red--great amount +++ ```

Question 29

Reagent used to test for STARCH

Answer 29

Iodine Potassium Iodine (I2KI) red- NEGative Black- POSitive

Question 30

Reagent used to test for LIPIDS

Answer 30

Sudan IV or brown paper bag red line at top- POSitive result

Question 31

Disaccharides

Answer 31

2 monosaccharides liked together

Question 32

polysaccharides

Answer 32

many monosaccharides linked together

Question 33

Monosaccharides

Answer 33

simple sugars with 3 -7 carbs

Question 34

what factors can increase enzymatic reactions and decreased?

Answer 34

Acid level 6.9 -0 room temp High temp basic PH level

Question 35

C to F

Answer 35

c multipled by 1.8 plus 32 Cx1.8+32

Question 36

F to C

Answer 36

F-32/1.8 | F minus 32 devide by 1.8

Question 37

In measurements L to S

Answer 37

go right

Question 38

In measurements S to L

Answer 38

go left