Lecture 1 Exam Comp

Question 1

Scientific nomenclature assigns each organisms two names. The genus and the

Answer 1

Specific epithet

Question 2

Fleming was NOT associated with

Answer 2

Pasteurization

Question 3

Beer is made from three basic ingredients. Barley water, and yeast. Given these ingredients which type of scientist would be interested in learning how bear is produced

Answer 3

Mycologist

Question 4

What is the general term for a disease causing entity

Answer 4

Pathogen

Question 5

Which of the following is NOT one of the domains of life

Answer 5

Prokarya

Question 6

Which of the following is the best definition of biotechnology

Answer 6

The use of living organisms to make derived products

Question 7

Which of the following scientific names is written correctly

Answer 7

Mycobacterium leprae

Question 8

Bacteria differ from viruses in that bacteria

Answer 8

Have DNA, can live without a host, living organism

Question 9

Which one of the following is an example of bioremidation

Answer 9

The use of pseudomonas to clean up an oil spill

Question 10

Our bodies are heavily colonized on the outside by microbes that are usually beneficial but which can cause disease under certain circumstances. These microbes are collectively referred to as

Answer 10

Microbiota or flora

Question 11

Know when and where (during the production of drugs) the use of a restriction enzyme is used

Answer 11

When part of the DNA is cut (think of scissors)

Question 12

Which of the following is the type of bond holding “K” and I together in KI

Answer 12

Ionic bond

Question 13

Identify the following reaction Glucose + Fructose -> Sucrose + H20

Answer 13

Dehydration synthesis reaction

Question 14

Which of the following is NOT one of the six most common elements in living things

Calcium
Oxygen
Carbon
Hydrogen
Sulfur
Nitrogen
Phosphorus

Answer 14

Sulfur

Question 15

MOST microbes grow best at a pH from

Answer 15

6.5 to 8.5

Question 16

ATP is what type of molecule

Answer 16

Nucleotide

Question 17

Of the four types of organic compounds which one is NOT a polymer

Answer 17

Lipids

Question 18

What kind of bond is indicated between 2 H20 molecules

Answer 18

Hydrogen bond

Question 19

How much do you multiply your 10 when moving on a pH scale

Answer 19

10^1 each ph level

Question 20

An atom with 7 protons, 7 neutrons, and 6 electrons would have a net overall charge of

Answer 20

+1

Question 21

A compound that helps keep the pH from changing drastically is

Answer 21

A buffer

Question 22

T or F, inorganic molecules do not contain carbon

Answer 22

False

Question 23

Three hundred nanometers is how many micrometers

Answer 23

.3 um looking measurement haha

Question 24

In a compound light microscope after light passes through the specimen it immediately enters the

Answer 24

Objective lens

Question 25

In confocal microscopy, a specimen may be labeled using a fluorochrome attached to an

Answer 25

Antibody

Question 26

Which step in the gram stain procedure is considered to be the differential step

Answer 26

Mordant

Question 27

Which microscope can produce the highest magnification and greatest resolution

Answer 27

Electron microscope

Question 28

T or F, Fluoescence microscope uses fluorescent light to illuminate the specimen

Answer 28

False

Question 29

If a specimen is magnified a total of 1200X what would the power of the ocular lens (the oil immersion is 100)

Answer 29

12x

Question 30

In order to maximized the contrast between the specimen and its surrounding the refractive index of specimen, we need to do what? What is the standard way of doing this

Answer 30

Stain the specimen

Question 31

I am used to see the internal structures of cells in a natural state without staining. I sometimes produce a halo around the specimen

Answer 31

Phase- contrast microscope

Question 32

You get distracted and forget to add safraron in while doing a gram stain. As a result

Answer 32

The gram positive cells will look purple

Question 33

The microscope is especially useful in studying the surface structures of intact cells and viruses

Answer 33

Scanning electron microscope

Question 34

In negative staining the dye settles

Answer 34

Around the specimens creating a silhouette

Question 35

Immigrants and refugees coming the the US are screened for tuberculous. Which staining technique would allow you to identify cases of this with the greatest certainty

Answer 35

Acid fast stain

Question 36

Your lab partner tells you that the bacteria in his gram stained smear are moving. You can conclude that

Answer 36

He didn’t fix the smear

Question 37

Some bacteria stain gram positive and others stain gram negative because of differences in their

Answer 37

Cell wall

Question 38

The arrangement of flagella (picture) multiple flagella from all sides

Answer 38

peritrichous

Question 39

_____ an endotoxin known to induce fever and low blood pressure in humans is gram ______

Answer 39

Lipid A, Gram negative

Question 40

If a solution containing .85% of NaCl is isotonic to the cystosol of a cell which of the following solutions would be hypotonic to this cell

Answer 40

.085% NaCl

Question 41

A bacterium that used to be susceptible to an antibiotic suddenly becomes resistant to it. What change its response to the drug?

Answer 41

Conjugation

Question 43

Which of the following can diffuse through the plasma membrane most easily?

Answer 43

CO2

Question 44

What is the purpose of bacterial endospores?

Answer 44

They help bacteria survive nutrient deficiendes

Question 45

Spirochetes move by means of:

Answer 45

Axial filaments

Question 46

Which cell would look pink at the end of gram staining (picture of cell walls)

Answer 46

Thinner cell wall

Question 47

Which of the following cells most closely resembles a prokaryotic cell

Answer 47

Mitochondria

Question 48

Gold coccus shaped like could be what genus (picture shown)

Answer 48

Staphylococcus

Question 49

Which of the following contain 70S ribosomes?

Answer 49

prokaryotes, mitochondria, and chloroplasts