Lab Quiz 1

Question 1

What is prohibited in the lab?

Answer 1

No food/drink, no cell phone use, no belongings at lab table

Question 2

When do you turn in worksheets from the lab?

Answer 2

At the next lab session

Question 3

When are quizzes given?

Answer 3

The week after the lab

Question 4

What are quizzes on?

Answer 4

The previous weeks lab and the current lab

Question 5

Are all quizzes counted?

Answer 5

Lowest quiz grade is dropped

Question 6

What questions on quizzes are from previous labs?

Answer 6

1-4

Question 7

What questions are on the current lab?

Answer 7

5-6

Question 8

What is the attendance policy for labs?

Answer 8

Attendance is mandatory for all labs

Question 9

What do you do if you miss a lab?

Answer 9

You must make-up the lab in another session during that SAME week

Question 10

What is the honor policy regarding labs?

Answer 10

Be honest and truthful, turn in your own work/answer questions in your own words

Question 11

What are the general expectations for labs?

Answer 11

Be on time and don’t leave early, be prepared for the lab, have your supplies, complete assignments on time, keep lab table neat/clean, keep belongings in cubbies, be respectful

Question 12

How can you earn + TA points?

Answer 12

Help set up lab, help clean up lab, help during lab, go to office hours, give in depth quiz answers, give good answers during the lecture portion of lab

Question 13

How can you earn - TA points?

Answer 13

Not bringing supplies, not being properly dressed, late/leaving early, using cell phones, not paying attention, not cleaning up, being disrespectful, giving no effort, improper disposal of waste

Question 14

W/ each tube the substance became more and more diluted

Answer 14

Serial dilution

Question 15

The unknown variable

Answer 15

Dependent variable

Question 16

The known variable

Answer 16

Independent variable

Question 17

In lab 1 the dependent variable was

Answer 17

The absorption of visible light

Question 18

The lab 1 the independent variable was

Answer 18

The concentration

Question 19

What are glass/plastics are used for?

Answer 19

Storing stock solution, don’t ever use solution directly from glassware move to smaller container

Question 20

What is án aliquot?

Answer 20

A small amount of stock solution

Question 21

What are graduated cylinders used for?

Answer 21

Measuring large volumes of liquid; if accuracy is critical use the smallest cylinder possible

Question 22

What is an Erlenmeyer flask used for?

Answer 22

To mix solutions

Question 23

What is a beaker used for?

Answer 23

Preparing solutions; not used for storing; do not use for precise measurements

Question 24

What are test tubes used for?

Answer 24

Used to prepare reaction mixtures and for short term storage

Question 25

What is the sharps box?

Answer 25

Where broken glass or disposable glassware and pipettes are discarded

Question 26

What is the needle box?

Answer 26

Where razor blades/needles are discarded

Question 27

What is a vortex mixer used for?

Answer 27

To mix solutions in test tubes

Question 28

What is a micro centrifuge used for?

Answer 28

To spin solutions at high speeds that generate up to 15,000 Gs of force

Question 29

What are water baths used for?

Answer 29

Filled with distilled water and are used to incubate reaction mixtures at precise temperatures

Question 30

What is a digital balance used for?

Answer 30

Used to weigh materials between 0.01 and 400 grams

Question 31

What are pipettes?

Answer 31

They are calibrated in millimeters, tenths, or hundredths and are used to measure and transfer small amounts of liquids

Question 32

Micropipettors are used for what?

Answer 32

Taking up small amounts of a substance and transferring it

Question 33

What are the 3 kinds of micro-pipettors?

Answer 33

P-20, p-200, p-1000

Question 34

Mu l stands for what?

Answer 34

Microliter

Question 35

Micro-pipettors measure in what?

Answer 35

Microliters

Question 36

P-20 and P-200 use what tips?

Answer 36

The smaller yellow tips

Question 37

P-1000 used what kind of tip?

Answer 37

The larger blue tips

Question 38

P-20 is used for volumes in what range?

Answer 38

1-20 microliters

Question 39

P-200 is used for what range of volumes?

Answer 39

20-200 microliters

Question 40

P-1000 is used for what range of volumes?

Answer 40

200-1000microliters

Question 41

How do you read the dial on a micropipette?

Answer 41

The three boxes go in descending order P-20: tens, ones, tenths P-200: hundreds, tens, ones P-1000: thiusands, hundreds tens

Question 42

Vo Cf ---- = ---- Vf Co This equation is used for what?

Answer 42

To determine how much stock is needed to prepare a solution if a certain volume and concentration

Question 43

What does Vo stand for?

Answer 43

Original volume

Question 44

What does Vf stand for?

Answer 44

Final volume

Question 45

What does Co stand for?

Answer 45

Original concentration

Question 46

What does Cf stand for?

Answer 46

Final concentration

Question 47

How much flavin was used in lab 1?

Answer 47

720 microliters

Question 48

How much phosphate buffer was used?

Answer 48

3 ml

Question 49

How do you change a volume that is in millimeters to microliters?

Answer 49

Move the decimal to the right 3 places

Question 50

What does a spectrometer do?

Answer 50

Measures only colored substances; measures how much light is absorbed, transmitted, and reflected

Question 51

What is transmittance?

Answer 51

The percent of light that passed through a substance

Question 52

What is the transmittance formula?

Answer 52

T = Io ---- I Where Io is the incident light

Question 53

How are absorbance and concentration related?

Answer 53

They are directly proportional

Question 54

What is variation?

Answer 54

Differences among species, individuals within each species, and it occurs at all levels of biological organization

Question 55

What is statistical analysis?

Answer 55

Applied mathematics used to test a hypothesis

Question 56

What phylum are pill and sow bugs from?

Answer 56

Arthropoda

Question 57

What are pill and sow bugs classified as?

Answer 57

Crustacea

Question 58

Describe Arthropoda?

Answer 58

Hard exoskeleton, jointed legs, she'd in order to grow

Question 59

Lives on land

Answer 59

Terrestrial

Question 60

What is the purpose of lab 2?

Answer 60

See if pull and sows bugs can be differentiated by their differing reactions to light Learn how to use excel on a computer

Question 61

How can you tell pill and sow bugs apart?

Answer 61

Pill bugs roll into balls when threatened

Question 62

What is the appropriate clothes to wear to lab?

Answer 62

Long pants, closed toe shoes, hair in ponytail