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Bio lab Mid term > mid term study > Flashcards

mid term study Flashcards

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Biology 101 flashcards
1
Q

In the pH experiment, which solution was the most acidic?

A

vinegar

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2
Q

In the pH experiment, Which solution was the most basic?

A

ammonia

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3
Q

Is milk an acid or base?

A

acid (pH:6)

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4
Q

What was the pH of Urea?

A

7

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5
Q

What was the pH of Sodium chloride(NaCl)?

A

7

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6
Q

What was the pH of baking soda?

A

8

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7
Q

In the pH experiment, what did a blue stain meant in the litmus paper?

A

basic solution

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8
Q

In the pH experiment, what did a red stain meant in the litmus paper?

A

acidic solution

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9
Q

What is the range in pH for an acid?

A

1-6

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10
Q

What is the range in pH for a base?

A

8-14

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11
Q

What organic acid is found in vinegar?

A

acetic acid

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12
Q

What acid is found on limes?

A

citric acid

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13
Q

What acid is found in soda?

A

phosphoric acid

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14
Q

What is the pH of the duodenum?

A

7.7

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15
Q

What is the pH of saliva?

A

7

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16
Q

What is the pH of the stomach?

A

2.5

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17
Q

What is the pH of human blood?

A

7.4

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18
Q

What does the Benedict’s test check for?

A

reducing sugars

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19
Q

During the Benedict test, how long is the test tube supposed to be boiling?

A

about 5 minutes

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20
Q

What does Idione test for?

A

startch

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21
Q

During the starch experiment, what color(s) did it turn when starch was present?

A

purple/black

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22
Q

What was the biuret test for?

A

protein

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23
Q

During the biuret test, what color(s) did represented that protein was present?

A

purple

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24
Q

What did Sudan IV test for?

A

lipids

25
Q

During the Sudan IV test, what was the color that showed the presence of lipids?

A

red

26
Q

What protein is found in the dairy products?

A

casein

27
Q

What kind of macromolecule is found on fruits?

A

carbohydrates

28
Q

What is the glycemic index?

A

rating system of foods that contain carbohydrates

29
Q

What amoeba did we view in lab?

A

amoeba proteus

30
Q

What is the most deadly amoeba?

A

Naegleria fowleri (brain eating amoeba)

31
Q

What was the name of the paramecium that we view in class?

A

paramecium caudatum

32
Q

In what environment are amoebas found?

A

aqueous environment

33
Q

How do amoeba move around?

A

creation of pseudopodia (fake foot)

34
Q

What does euglena use to move?

A

flagella

35
Q

What is the cell wall of a plant cell made out of?

A

cellulose

36
Q

What is the cell wall of a bacteria made out of?

A

peptidoglycan

37
Q

What is the temperature for an ice bath?

A

4°C

38
Q

What is room temp?

A

23°C

39
Q

What is the warm water temperature?

A

55°C

40
Q

How does temp affect diffusion?

A

the hotter it is, the faster it will diffuse

41
Q

How does molecular weight affect the rate of diffusion?

A

The heavier molecule will diffuse slower than the lighter molecules

42
Q

How permeable was the dialysis tubing?

A

semi-permeable

43
Q

Is dialysis tubing permeable to albumin?

A

no

44
Q

Is dialysis tubing permeable to sugar?

A

yes

45
Q

Is dialysis tubing permeable to iodine?

A

yes

46
Q

Is dialysis tubing permeable to starch?

A

no

47
Q

during the dialysis tubing experiment, how long did it had to wait for the iodine to diffuse?

A

1 hour

48
Q

what was the name of the machine used to measure the light?

A

spectrophotometer

49
Q

A?

A

ocular lenses

50
Q

b?

A

revolving nosepiece

51
Q

c?

A

objective lenses

52
Q

d?

A

stage

53
Q

e?

A

condenser

54
Q

f?

A

light source

55
Q

g?

A

light knob

56
Q

h?

A

arm

57
Q

i?

A

coarse adjust knob

58
Q

j?

A

fine adjust knob

Bio lab Mid term (7 decks)

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