Quizzes 1-5 BIOL 1406 Lab (quiz 6 and 7 not graded yet)

What is the basic unit of length in the metric system? (Quiz 1)

Meter

What is the basic unit of mass in the metric system? (Quiz 1)

Gram

What is the basic unit of volume in the metric system? (Quiz 1)

Liter

Convert the following numbers to the units indicated:
a. 120 lbs

b. 15.5 ml

c. 0.5 gal

d. 1234 cm

(Quiz 1)

1. 54.5454

2. 0.516 (repeating)

3. 1900

4. 485.8268

What is an absolute rule regarding apparel for participating in lab? (Quiz 1)

Must have closed toed shoes

What are the advantages of using the metric system over the English system? (Quiz 1)

It is universal (everyone uses it)

Define Accuracy? (Quiz 2)

The measurement must be as close to the real value as possible

Define Precision? (Quiz 2)

Multiple measurements are consistently reproducible (showing the same results)

What is a meniscus? (Quiz 2)

The curve of a surface (where you wanna measure the volume, is by finding the meniscus)

What is the mass of 650 mL of water? (Quiz 2)

650 g

Calculation

Mass = Volume x Density

650 mL x 1g = 650

Define the following:

a. Independent variable

b. Dependent variable

1. A factor whose value is manipulated or changed by the experimenter during an experiment to reveal possible effects on another factor

2. A factor whose value is measured during an experiment or other test to see whether it is influenced by changes in the independent variable

What is the morphological shape of the following:
a. Bacilli

b. Cocci

c. Staphylo

d. Strepto

(Quiz 3)

1. Rod, elongated cigar, or rectangular shape

2. Round, spherical, or circular-shaped

3. Grape-like clusters

4. Long chain-like structure

What is the total magnification for a 40x objective lens? (Quiz 3)

400X

What are the three Domains of Life? (Quiz 3)

1. Archaea

2. Eukarya

3. Bacteria

What is the basic difference in a Prokaryote and Eukaryote?

Prokaryotes do NOT have membrane-bound organelles whereas Eukaryotes do have membrane-bound organelles

Name the parts of a microscope (Quiz 3)

1. ocular lens

2. objective lens

3. Coarse focus knob

4. stage

5. Condenser

6. Fine focus knob

What are the four basic parts of the Scientific Method? (Quiz 4)

1. Observation

2. Hypothesis

3. Testing

4. Discussion

What were the two independent variables used in the lab with the Daphnia? (Quiz 4)

Ethanol and caffeine

Describe the proper procedure for drawing up and transferring a solution from one tube to another using a micropipette (Quiz 4)

Slowly pushing it down to the first stop and transferring it by pushing down to the second stop

How many milliliters of a 10% stock solution would you need to make 500 ml of a 2% solution? (Quiz 4)

100 mL (formula is C₁V₁ = C₂V₂)

If your daphnia had a resting heart rate of 180 BPM, what is the target heart rate if you are looking for a 10% increase? (Quiz 4)

198 BPM

Calculation is

(turn 10 into decimal)

0.10 × 180 = 18

180 + 18 = 198

The tube that is used in the calibration process for the spectrophotometer is called the _____ tube? (Quiz 5)

Blank

What was in that tube, specifically? (Quiz 5)

Water and Bradford reagent

Describe the process called “serial dilution?” (Quiz 5)

Diluting concentration by half in each tube

If you start with a concentration of 2000 mg/ml in a serial dilution, what will be the concentration in the 4th tube? (Quiz 5)

250 mL