BIO LAB MID TERM Flashcards
What are the lab safety policies?
- Let the TA know about any injuries,chemical spills, broken glass and fire
- No eating or drinking
- Before leaving lab; wash hands, clean table and place materials in their original place
What are the pieces of safety equipment?
- Gloves (left/back side of the lab)
- First Aid Kit (front part of the lab)
- Fume Hood (left/front part of the lab)
- Glass Disposal (left/front part of the lab)
- Exit Sign
- Eye Wash Station (right/front part of the lab)
- Hazardous Waste Dispoal (Left/front part of the lab)
- Fire Extinguisher
What are the lab dress codes?
- Close-toed shoes with enclosed heel
- Top must cover midriff, back and shoulders
- Pants (no shorts or skirts)
- No mesh clothing or holes
- Hair tied back
- Googles and lab coats NOT required
Syllabus/Course Policies Overview
- Attendance is required, any absences due to illness, emergencies, religious holiday, athletic events or military must have an absence form submitted prior.
- AI Use is prohibitted
- Labs must be made up by either scheduling it in another section or attending an in genernal lab near the end of the semester
- Must email instructor with only rebelmail accounts
- Quizzes are worth 20% (lowest dropped)
- Pre-Labe Quizes are worth 15% (lowest dropped)
- Lab Report are worth 20% (lowest dropped)
- PLPs are worth 5%
- ESB are worth 15%
- Midterm worth 10%
- Final worth 15%
What equipment is used to measure things like mass,length,volume, temperature?
- Beaker
- Flask
- Graduated Cylinder
- Test Tube
- Transfer Pippette
- Electric Balance
- Thermometer
What are units of measurement for volume,mass,length and temperature?
- Volume: militers or liters
- Mass: grams or kilograms
- Length: milimeters,centimeter,inches, feet,yards, meters,kilometer, miles
- Temperature: celsius, fahrenheit, kelvin
What are the metric base units of measurement?
- Deci (d): 0.1 (10^-1)
- Centi (c): 0.01 (10^-2)
- Mili (m): 0.001 (10^-3)
- Micro (upside-down h): 0.000001 (10^-6)
- ## Nano (n): 0.0000000001(10^-9)
- Deka (da): 10 (10^1)
- Hecto (h): 100 (10^2)
- Kilo (k): 1000 (10^3)
- Mega (M): 1,000,000 (10 ^6)
- Giga (g): 1,000,000,000 (10^ 9)
Converting from metric to english
1 milimeter —-> 0.039 inches
1 centimeter —-> 0.4 inches
1 meter —-> 3.3 feet
1 kilometer —–> 3.3 miles
1miligram —-> 0.001 gram
1 gram—–> 0.0353 ounces
1 kilogram —–> 2.2 pounds
G
Converting to and from scientific notation
Converting to scientific notation
* 52,314 —-> 5.2314 x 10^4
* 0.000056—–> 5.6 x 10^5
Scientific notation to standard
* 4.5 x 10^4 ——> 45,000
* 500—-> 5 x 10^2
What are the steps of the Scientific Method?
- Observation
- Hypothesis
- Experiment
- Data Collection/Analysis
- Communication
What are dependent, independent, and control variables?
Dependent: The component that is being measures (depends & will change based off the independent variable)
Independent variable: The component that we are manipulating/changing (will effect the dependent variable results)
Control variable: Represents a normal/typical scenario, produces a known result that will used as the standard for IV (usually the placebo)
On a graph what is the dependent and independent variable?
Dependent Variable: Y axis
Independent Variable: X axis
What two things will water ionize/dissociate into?
hydrogen ion (H+) and hydroxl ion (OH-)
What is an acid?
Any compound that releases hydrogen ions when dissolved in water
What is a base?
A compound that accepts hydrogen ions while in solution removing free hydrogen ions form solution
What is the pH scale?
A scale with various ranges of pHs, from 0 being the most acidic to 14 being the most basic and 7 being neutral
How does the pH scale function?
Based off the powers of ten
Acidic: positive expontents; 10^5=100,000 (H+)
Basic: negative expontents: 10^-4= 1/1,000 (OH-)
Acidic pH examples
- lemon
- stomach acid
- battery
- tomato
- vinegar
Basic pH examples
- baking soda
- soap
- bleach
- drain cleaner
- ammonia solution
What are atoms, atomic number, atomic mass?
atom: basic unit of chemical
atomic number: number of protons in the nucleus
atomic mass: number of protons plus number of neutron
What is a chemical bond?
Interaction between atoms
What is an Ionic, Covalent, Non-polar, and Polar bond?
Ionic: Attraction between oppositely chagred ions (loss or gain of electrons)
Covalent: Sharing of electrons
Nonpolar: Equal sharing of electrons
Polar: Unequal sharing of electrons
Why are positive and negative controls used?
- Ensure procedures are working correctly
- Detect sample contamination
- Used as a reference point for comparison of results
What is a carbohydrate and what are monosacchaarides, disaccharides, oligosaccharides
and polysaccharides?
Carbohydrate: Molecule containing carbon, hydrogen and oxygen and plays a key role in an organism’s energy production/celluar make up
Monosaccharide: Single, simple sugar (monomer); building blocks for larger molecules
Disaccharide: Two monosaccharides linked
Oligosaccharide: Three to seven monosaccharides
Polysaccharides: Complex carbohydrates, 12+ monosaccharides linkes; serve as energy storage molecules
