Biology 121 Lab Final
The pH scale has a range of
0-14
Steps to prepare a wet mount
1) Have a clean cell 2) Place 2-3 drops of water 3) Place specimen in the water 4) Take a cover slip and place at 45 degree 5) Push the bubbles out
A picometer is .000000000001 m; convert this to scientific notation.
1*10^-12
(4.6x10^-4) x (2.5x10^-4)
1.15x10^-7
Convet 1234.95000000 to scientific notion
1.23496 x 10^3
An average human has 125 trillion cells; convert this number to scientific notation
1.25*10^14
If tomato juice has a pH of 3, how many more H+ ions are present in lemon juice with a pH of 2?
10 times more H+ ions
Total Magnification Low
100x
Objective Low
10x
Ocular High
10x
Ocular Low
10x
(5.9x10^8)x(3.7x10^-5)
2.183 x 10^4
The approximate number of stars in the Milk Way is 2*10^11; convert this value to standard notation
200,000,000,000
22.4 liters to millilters
2290 milliliters
Objective High
40x
Arm
Connects the oculars to the microscope
Nucleus
Control center of a cell
Using a compound mircoscope: the size of field(field of view) ... As one moves ip to the next power. And, the amount of light must be ... as one moves up in power.
Decrease/Increase
Chromatin
Diffuse and threadlike stands that contain DNA and protiens
Elodea
Multicellular
Onion Skin
Multicellular
The bacterial chromosome is found in the:
Nucleoid
A mircoscope is said to be .... when the image remains in focus when objective lenses are changed.
Parfocal
Cell Wall
Peptidogylcan envelope that gives protection and shape to a cell
Plasma Membrane
Phospholipid bilayer that provides support and regulates movement of substances entering and exiting cell
In both plants and animal cells
Plasma membrane, Cytoplasma, and Nucleus
Bendicts test for Carbohydrates
Red-Positve Blue-Negative
Nucleoid
Region of cell that contains bacteria DNA
Rough ER
Ribosomes-lined structure involved in synthesis assembly of protiens and membranes
While viewing an image under the microscope, you physically move the slide to the left. Visually the move to the ... .
Right
Pili
Rigid, hairlike structures used for attachment and gentic material exchange
Fimbriae
Short, hairlike structures important for attachment
The main site of steriod , fatty acid and phospholipid synthesis is the:
Smooth ER
Golgi Apparatus
Stacks of cisternae that receive, package, store, and ship protein products
Smooth ER
Structure not associated with ribosomes; main site of steroid, fatty acid, and phospholipid synthesis
Flagellum
Structure used for locomotion
Example of ionic bonds
Table salt
Robert Hooke is most closely associated with:
The Cell Theory
Compare and Contrast an acid and a base, provide examples.
The acids make the amount of hydrogen atoms increase in a solution. Lemon juice is a type of acid. Bases makes the hydrogen in concentration decrease in the solutions. For example 2 of them would besodium hydroxide which, is a common base
Explain why the use of scientific notaion is important.
The scientific notation is important so we never mess up our calculation because with all those zeros we could add or forget on and mess up the calculation
Yeast
Unicellualr
Amoeba Proteus
Unicellular
Paramecium sp.
Unicellular
Salmonella typhimurium
Unicellular
Coarse-Adjustment Knob
Used for general focusing
Fine-Adjustment Knob
Used for precise focusing
Peroxisome
Vesicle containing enzymes that break down fatty acids and neutralize hydrogen peroxide
Total Magnification Scanning
40x
Objective Scanning
4x
(5.2x10^9)+(3.2x10^5)
5.2x10^9
Convert Avogdro's number (6.02*10^23) to standard notation
602,000,000,000,000,000,000,000
(7.3x10^5)-(2.5x10^2)
7.2975x10^5
769 nanometers to kilometer
7.69*10^-10
89.04 grams to kilograms
8.904*10^-2
What does a negative exponent signify in scientific notation?
A negative exponent signifies movement of the decimail point to the left and left then 1
A substance with pHless than 7 is considered a/an
Acid
How does blue litmus paper react with an acid?
Acid turns blue litmus paper red
Iris Diaphragm
Adjuts light intensity
Mitochondria
Aerobic respiration site
The biological levels of organization from smallest to largest are:
Atom, Molecule, Tissue, Organ, Organism
A substance with a pH greater than 7 is a/an
Base
Protien Tester
Blue- Negative Purple- Positive
What structures present in onion epideral cells would not be present in human epithelial cells?
Cell wall and Chloroplasts
In plants cells
Cell wall, Chloroplasts, Central vacuole
You went on a hurri-cation and had no one to water your plants. When you return, the leaves were soft and wilted. The organelle that became dehydrated was the:
Centeral Vacuole
Volvox sp.
Colonial
Osseous Tissue is which type of tissue?
Connective
compare and contrast the characteristics of prokaryotic and eukaryotic cells.
Eukaryrotes and Prokaryotes both have genetic material, and outermembrane. Also prokaryotes and some eukaryotes have a cell wall. Prokaryotes don't have membraned oraganelles and are smaller. Eukaryotes have more DNA, linear chromosome.
T/F: It acceptable to clean objectives and oculars of the mircoscope with papaer towels and water.
False
T/F: Stage clips are not necessary when viewing fixed slides.
False
T/F: Store the microscope with the highest power objective in the downward position.
False
Condenser
Focuses the light on the specimen
Objective lens
Having different magnifications
What is an ionic bond?
Is a compound that completely transfer of valence electrons
What is a covalent bond?
Is a compound tht shares a pair of electrons between two atoms
What happens to phenolphthalein in acid?
It stays a colorless
How does methyl organge indicate a acid?
It turns red in the presence of an acid
In animal cells
Lysosomes and Centrioles
Prokarotic cells lack ... and ... .
Membrane bound organelles and nucleus
Stage controls
Moves the slide
Lysosome
Vesicle containinng hydrolytic digestive enzymes used in destroying worn-out organelles and cellular debris
Example of covalent bond
Water
Ionic Indicators
Yellow - Negative Brown - Postive
Convert 5.43 x 10^-6 to standard notation
.00000543
A ciliate can be 10 mircometers in length. What is its length in meters?
.00001 meters
Adult humans average 5,000 milliliters of blood; is how many liters.
.5 liters
Ocular Scanning
10x
Some individuals with diabetes insipidus can produce as much as 15 liters of urine a day. This value equates ... millimeters a day?
15,000 milliliters
19.7 kilograms to grams
197,000 grams
(8.8x10^12)/(4.2x10^-2)
2.0952x10^14
(4x10^10)/(1.9x10^5)
2.1053x10^5
Convert 2.94 x 10^5 to standard notation
294,000
(6.8x10^-4)/(3.4x10^-2)
2x10^-2
(3.5x10^5) x (1.1x10^6)
3.8x10^11
If the average human heart has a mass of about 300 grams, what is the mass in milligrams?
300000 milligrams
3.9 meters to centermeter
390 centimeter
Approximately 4.3*10^9 kg of matter is converted to energy by the sun each second; convert this number to standard notation
4,300,000,000 kg
Bacillus anthracis has a length of 4.1 micrometer. convert this value to scientific notation.
4.1*10^-6 m
Convert .00000004567 to scientific notation
4.567 x 10^-8
Total Magnification High
400x