Bio 1421-Farr-Exam One

Front 1

Which virus attacks white blood cells?

Back 1

B. HIV

Front 2

Prokaryotes are helpful to humans because they

Back 2

a. help plants utilize atmospheric nitrogen.
b.can clean up toxic waste
c. are used to make various foods.
d. sythesize vitamins within our intestinal tracts.
....all of the above.

Front 3

Some prokaryotes can live in harsh environment such as

Back 3

a. antartic sea ice.
b. extermely acidic or alkaline conditions.
c.boiling water.
d. a mile below Earth's surface.
...all of the above

Front 4

The concept of evolution is based upon ______.

Back 4

a. survival and reproductive success of organisms with favorable variations.

Front 5

Measles is caused by

Back 5

E. viruses

Front 6

Tetanus is caused by ______ bacteria that are growing in deep puncture wounds.

Back 6

D. anaerobic

Front 7

Of the following, which is the first explanation of a problem in thinking of scientist?

Back 7

B. hypothesis

Front 8

The oldest fossil organisms presently know have been dated at approximately how many years old?

Back 8

D. 3.5 billion

Front 9

Bacteria cause which of these diseases?

Back 9

a. gonorrhea
b. strep throat
c. pneumonia
d. syphilis
...all of the above.

Front 10

Evolution is described as change from pre-existing life forms to modern-day organisms. What actually changed?

Back 10

E. ability of organisms to cope with external stimuli

Front 11

A virus basically consists of

Back 11

D. RNA or DNA and a protein coat

Front 12

A carefully formulated scientific explanation that is based on a large accumulation of observations and is in accord with scientific principles is termed a

Back 12

D. theory

Front 13

Which of the following are of the smallest sized organisms?

Back 13

D. bacteria

Front 14

Prokaryotic cell walls function

Back 14

to prevent the cell from bursting in a hypotonic (watery) environment

Front 15

Which of the following may cause the disease known as lockjaw?

Back 15

A. Clostridium tetani

Front 16

Which of the following is a normal inhabinant of a cow's digestive tract that can cause harm to people when it contaminates ground beef?

Back 16

B. Escherichia coli

Front 17

The earliest (oldest) fossils resemble modern

Back 17

E. Prokaryotes

Front 18

An autoclave provides the ability to sterilize an object by providing

Back 18

a. 270-300 *F
b. high pressure
c. high temperatures
d. all of the above
... none of these

Front 19

The main difference between an autotroph and a heterotroph is

Back 19

A. how they obtain energy

Front 20

Binary fission is the method by which bacteria

Back 20

D. reproduce

Front 21

Flu Pandemics are caused by the spread of

Back 21

A. RNA viruses

Front 22

Which of the following is NOT used in the development of science?

Back 22

D. personal conviction

Front 23

Antibiotics can only be effective against a

Back 23

A. bacterium

Front 24

Prions are

Back 24

C. improperly folded proteins

Front 25

When a virus takes over the machinery of a cell, it forces the cell to manufacture

Back 25

A. more viral particles

Front 26

Unlike aerobic prokaryotes, anaerobic prokaryotes can obtain energy when _____ is not available.

Back 26

D. oxygen

Front 27

The slime layer around the bacterial cell is called the

Back 27

D. capsule

Front 28

A bacterial colony that forms a grape-like cluster of round cells would be described as

Back 28

A. staphlococcus

Front 29

Endospores are produced by

Back 29

D. bacilli ***( ROD )****

Front 30

Strep throat is caused by Streptococcus, at type of

Back 30

D. Bacteria

Front 31

Intestianl gas is evidence of active _____ in one's digestive tract.

Back 31

E. methanogens

Front 32

Science is based on

Back 32

E. evidence

Front 33

Viruses that attack prokaryotes are called

Back 33

A. bacteriophages

Front 34

What do the sticky layers of protective slime produced by some bacteria enable them to do?

Back 34

D. stick together and form biofilms

Front 35

According to US law, no irradiated food products can exist in the US grocery stores.

Back 35

B. False

Front 36

In which of these environments would you normally find prokaryotes?

Back 36

a. human skin
b. a spoonfull of soil
c. an animal's intestinal tact
d. a single drop of saltwater
all of the above....

Front 37

Which represents the highest degree of certainty?

Back 37

A. theory

Front 38

Which of the following is NOT a key characteristic of "life"

Back 38

A. inability to change ****

Front 39

Nearly all viral multiplication cycles require _____ steps.

Back 39

B. five

Front 40

It appears that the pathogen responsible for "mad cow disease" also in human causes

Back 40

A. vCruetzfeldt-Jakob disease

Front 41

Botulism can cause

Back 41

B. paralysis, distruped breathing, and death.

Front 42

Lyme disease is cause by _____ that are transmitted to humans by ticks.

Back 42

E. spirillia

Front 43

When nutrients are scarce or stress occurs some bacteria

Back 43

E. form endopores

Front 44

When a disease spreads fast across countries at the same time this is called a _______?

Back 44

A. pandemic

Front 45

In a word, evolution means _____.

Back 45

A. change

Front 46

Herpes is caused by

Back 46

E. viruses

Front 47

For which of the following diseases or conditions should antibiotics be used?

Back 47

D. lyme disease

Front 48

Endospores as old as _____ years old have been revived into living bacteria.

Back 48

B.250,000,000

Front 49

Most scientists do not consider viruses to be "alive" because

Back 49

D. their metabolic machinery is borrowed from the host cell.

Front 50

When bacteria divide by fission each daughter cell inherits

Back 50

C. one chromosome

Front 51

The rhyme or verse "Ring around the rosey..." is related to what epdidemic?

Back 51

D. bubonic plague

Front 52

Pathogens

Back 52

E. are defined as any infectious agent that can invade a host organism and multiply on or in it.

Front 53

Multicellularity allows organisms to

Back 53

E. be big

Front 54

Which is a swamp gas, intestinal gas, and explosive gas in a coal mine (killed miners recently)?

Back 54

A. methane

Front 55

In ancient Rome which of the following words meant " poisonous ", "venemous" or "virulant?"

Back 55

D. virus

Front 56

When someone develops botulism, the disease-causing organism responsible has been

Back 56

A. living anaerobic
B. herterotophic
C. prokaryotic
D.unicellular
....all of the above

Front 57

Which of the following is characteristic of HIV?

Back 57

A. RNA enclosed in a protein coat

Front 58

Bacteriophages are:

Back 58

A. Viruses

Front 59

Mad cow disease, also called variant Creutzfelt-Jakob disease, is caused by

Back 59

A. prion

Front 60

Four of the five terms listed below are associated with the scientific method. Select the exception.

Back 60

A. faith

Front 61

Diverse viruses infect organisms of

Back 61

A. only the Eubacteria
B. only the animal kingdom
C. only the plant kingdom
D. only the Archea
E..... all kingdoms

Front 62

Flagella in bacteria

Back 62

A. are specialized for movement through rotory spin.

Front 63

Contagious diseases are spread by

Back 63

A. indirect contact
B. inhalation
C. vectors
D. direct contact
E. all of these....

Front 64

The smallest organizational unit having a capacity to survive and reproduce on its own its

Back 64

B. a cell

Front 65

Extreme halophiles

Back 65

E. require high salt concentrations

Front 66

When not dividing, bacteria have ____ chromosome(s) and may have extra circles of_____ called plasmids.

Back 66

One;DNA

Front 67

Viroids differ from viruses in that the former lack

Back 67

D. protein

Front 68

Each kind of bacteriophage can, because of complementary proteins in its tail, bind to the cell surface of:

Back 68

C. Only one kind of bacteria species.

Front 69

Pairs of rod-shaped bacteria are called

Back 69

E. diplobacilli

Front 70

Methanogenic archaeans are found in

Back 70

A. deep in the earth
b. in intestines
c. the ocean
d. marshes
e. all of the choices...***

Front 71

The _____ are tightly folded strands or circles of RNA and poses no protein coat. These bits of "naked" RNA cause many diseases in plants.

Back 71

D. viroids

Front 72

Which of the following statements about viruses is true?

Back 72

B. They include some forms that are able to attack bacteria.

Front 73

The validity of scientific discoveries cannot be based on

Back 73

A. morality
B. economics
C. philosophy
D. aesthetics
E. any of these...***

Front 74

Which of the following allow the bacteria to join together to transfer genes?

Back 74

A. pili

Front 75

In bacteria, DNA is found

Back 75

A. as a circular thread.

Front 76

Bacteriophages are a group of viruses (viri) that infect

Back 76

D. bacteria

Front 77

A virus cannot replicate without pirating ______ from a specific host cell.

Back 77

E. metabolic machinery

Front 78

Rod shaped bacteria are called

Back 78

C. bacilli

Front 79

Endospores

Back 79

A. may contain concentrated poisons
B. save the life of the bacterium
C. form inside rod bacteria
D. help some bacteria to survive 1,000's of years
E. all of these****

Front 80

The reproduction of microorganisms is self-limiting because

Back 80

E. the accumulation of waste products can be toxic, and the supply of nutrients may run out, and other organisms may prey on them.

Front 81

Which of these is NOT caused by bacteria

Back 81

B. smallpox

Front 82

Which of the following groups can serve as a source of antibiotics

Back 82

A. fungi

Front 83

Creutzfeldt-Jacob disease is caused by

Back 83

D. prions

Front 84

The oldest living forms of life on Earth are the

Back 84

A. Archaea

Front 85

Infective proteins are known as

Back 85

B. prions

Front 86

Which of the following diseases is caused by a spirillium

Back 86

A. lyme disease

Front 87

Viruses have a _____ and a ____.

Back 87

D. DNA or RNA core; protein coat

Front 88

Which of the following options correctly pairs a structure with its function in prokaryote cells?

Back 88

pili=help prokaryotes stick to each other and to surfaces