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