Bio 100 Lab Exam 1 UPDATED ACTUAL
Exam Questions and CORRECT Answers
Calculate Total Magnification (Lab 1) - CORRECT ANSWER - Ocular Magnification
(4x) x Objective Magnification = Total Magnification
Focus & View a Specimen Under a Microscope - CORRECT ANSWER - 1. Stage is all
the way down
2. 4x objective lens
3. Adjust Ocular lens
4. Adjust rheostat for light intensity
5. Stage adjustment
6. Course focus knob to lower stage
*Never use course focus knob with lens higher than 4x*
7. Use fine focus knob
*Don't use 100x objective lens because it requires a special technique called "oil immersion"
Create a Wet Mount - CORRECT ANSWER - 1. Add drop of water to slide and place
specimen in water
2. Place edge of coverslip on slide
3. Slowly lower the coverslip to prevent air bubbles
4. Remove excess water from slide
Biological Domains - CORRECT ANSWER - - Archaea:
- Bacteria: cocci, bacilli, spirilla
- Eukarya: Fungi, plante, animalae, protista
Eukaryotic Kingdoms - CORRECT ANSWER - - Protista: paramecium
- Fungi: penicillium conidia
, - Plantae: pond water plant azolla
- Animalae: daphnia
Hypothesis (Lab 2) - CORRECT ANSWER - Restates the question with a possible
explanation
Control Group - CORRECT ANSWER - Group not exposed
1. Independent Variable
2. Dependent Variable - CORRECT ANSWER - 1. variable being controlled/manipulated
2. variable being measured
Steps of Scientific Method - CORRECT ANSWER - Observe --> Hypothesize --> Test -->
Interpret
Lipids (Lab 3) - CORRECT ANSWER - Water + Sudan III = Clear (polar/hydrophilic)
Cream + Sudan III = Red (non polar/hydrophobic)
Skim Milk + Sudan III = Clear (polar/hydrophilic)
Salad Oil + Sudan III = Red (non polar/hydrophobic)
Hydrophilic - CORRECT ANSWER - - Water loving
- soluble
- polar
Hydrophobic - CORRECT ANSWER - - Water fearing
- insoluble
- non polar
Exam Questions and CORRECT Answers
Calculate Total Magnification (Lab 1) - CORRECT ANSWER - Ocular Magnification
(4x) x Objective Magnification = Total Magnification
Focus & View a Specimen Under a Microscope - CORRECT ANSWER - 1. Stage is all
the way down
2. 4x objective lens
3. Adjust Ocular lens
4. Adjust rheostat for light intensity
5. Stage adjustment
6. Course focus knob to lower stage
*Never use course focus knob with lens higher than 4x*
7. Use fine focus knob
*Don't use 100x objective lens because it requires a special technique called "oil immersion"
Create a Wet Mount - CORRECT ANSWER - 1. Add drop of water to slide and place
specimen in water
2. Place edge of coverslip on slide
3. Slowly lower the coverslip to prevent air bubbles
4. Remove excess water from slide
Biological Domains - CORRECT ANSWER - - Archaea:
- Bacteria: cocci, bacilli, spirilla
- Eukarya: Fungi, plante, animalae, protista
Eukaryotic Kingdoms - CORRECT ANSWER - - Protista: paramecium
- Fungi: penicillium conidia
, - Plantae: pond water plant azolla
- Animalae: daphnia
Hypothesis (Lab 2) - CORRECT ANSWER - Restates the question with a possible
explanation
Control Group - CORRECT ANSWER - Group not exposed
1. Independent Variable
2. Dependent Variable - CORRECT ANSWER - 1. variable being controlled/manipulated
2. variable being measured
Steps of Scientific Method - CORRECT ANSWER - Observe --> Hypothesize --> Test -->
Interpret
Lipids (Lab 3) - CORRECT ANSWER - Water + Sudan III = Clear (polar/hydrophilic)
Cream + Sudan III = Red (non polar/hydrophobic)
Skim Milk + Sudan III = Clear (polar/hydrophilic)
Salad Oil + Sudan III = Red (non polar/hydrophobic)
Hydrophilic - CORRECT ANSWER - - Water loving
- soluble
- polar
Hydrophobic - CORRECT ANSWER - - Water fearing
- insoluble
- non polar
