BIO LAB QUIZ REVIEW

Question 1

quiz1 If ocular lens is 10x, and objective lens is 40x, what is final magnification

Answer 1

400x

Question 2

quiz solve for (FOVf); (FOV0)(MAG0)=(FOVf)(MAGf)

Answer 2

FOVf= [fov0(mag0)] / Magf

Question 3

quiz1 Convert 3000 um to nm

Answer 3

3,000,000 or 3*10^6

Question 4

quiz1 name for plant slide viewed in class

Answer 4

Elodea plant cell and chloroplast

Question 5

quiz1 name for human cheek cell viewed in class

Answer 5

Epithelial human cheek cell

Question 6

quiz2 how many TIMES more H+ions are present in a solution with a pH of 3 relative to a solution with a pH of 5

Answer 6

ph of 3 is more acidic, having more H+ions by a factor of 10^2

Question 7

quiz2 bromecresol purple tests for

How to test quality of solutions buffer

Answer 7

tests for pH, starts purple the quicker a substance turns yellow, the least effective its buffer, the quicker it turns to acid

Question 8

Define Base

Answer 8

any solution that reduces the concentration of hydrogen ions {- [H+] }

Question 9

a test tube with a bright red or orange ring on the surface of a milky solution would indicate a postive test for

This test is called

Answer 9

LIPIDS

SUDAN 4 (Sudan IV)

Question 10

lab4 - indicators for pH

Answer 10

BTB - indicates pH range 7.6 to 6.0
Phenol Red (PR) indicates pH range 8.2-6.8
BP (bromcresol purple) indicates pH range 8.2-5.2

Question 11

lab5 testing for bio macromolecules
How to test for STARCHES
1. (simple or complex carbohydrate?
2. positive color/ negative color?

Answer 11

Starch is a COMPLEX CARBOHYDRATE

1. Lugol’s Iodine Test
2. positive: DARK PURPLE
   negative: YELLOW

Question 12

lab5 testing for bio macromolecules
How to test for GLUCOSE?
1. simple or complex carbohydrate?
2. postive/ negative indicator?

Answer 12

1. Glucose is a simple carbohydrate
2. Positive: RED
   Negative : BLUE

Question 13

lab5 testing for bio macromolecules

How to test for PROTEIN

Answer 13

1. test with Biuret’s A & B
2. positive result: DARK BLUE TO PURPLE
   negative result: light blue

Question 14

lab5 testing for bio macromolecules

How to test for LIPIDS

Answer 14

1. test with SUDAN IV and hot bath
2. positive: RED LAYER on top of cloudy solution
   negative: cloudy

Question 15

the nucleus of the cell

Answer 15

(N) the distance from one side of the spherical shape, phospholipid bilayer to phospholipid bilayer.

Question 16

nucleolus

Answer 16

(Nu) is the dark shape inside of the Nuclues