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BIO SCI 101 > Exam 4 > Flashcards

Exam 4 Flashcards

1
Q

Most of the available antimicrobial agents are effective against:

A

bacteria

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2
Q

More than half of our antibiotics are:

A

produced by bacteria

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3
Q

T/F Penicillin G was isolated from bacterium of the genus Streptomyces.

A

False

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4
Q

In what way semisynthetic and natural penicillins are alike?

A

Both have β-lactam ring in its structure

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5
Q

Which statement is correct concerning penicillin?

A

it prevents crosslinking of peptidoglycan strands

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6
Q

Which of the following organisms would MOST likely be sensitive to natural penicillin?

A

Streptococcus pyogenes

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7
Q

Which of the following antibiotics does NOT interfere with cell wall synthesis?

A

tetracycline

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8
Q

Which of the following statements is FALSE?

A

Interferon inhibits glycolysis

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9
Q

Which of the following statements about drug resistance is FALSE?

A

it is found only in gram-negative bacteria

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10
Q

Which of the following antimicrobial agents is recommended for use against fungal infections?

A

nystatin

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11
Q

Which of the following does NOT affect eukaryotic cells?

A

semisynthetic penicillins

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12
Q

What is phage therapy?

A

The use of viruses to kill bacteria

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13
Q

Which of the following statements about septicemia is FALSE?

A

It is caused by bacteria being present in the blood or lymph

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14
Q

Which of the following are Gram-positive bacteria?

A

bacillus, staphylococcus, and streptococcus

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15
Q

Which of the following pairs is mismatched?

A

Malaria – Treponema pallidum

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16
Q

Which of the following is NOT caused by a bacterium?

A

malaria

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17
Q

Human-to-human transmission of Plague is usually by:

A

the respiratory route

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18
Q

A characteristic symptom of Bubonic plague is:

A

swollen lymph nodes

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19
Q

Which of the following is NOT a zoonosis?

A

syphilis

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20
Q

Most dangerous form of anthrax infection:

A

pulmonary anthrax

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21
Q

Infection with Streptococcus pyogenes can cause all of the following EXCEPT:

A

buboes

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22
Q

Which one of the following statements about mycoplasmal pneumonia is FALSE?

A

treatment with Penicillin G

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23
Q

Tuberculosis is caused by

A

gram positive bacteria

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24
Q

All of the following can lead to a positive tuberculin skin test EXCEPT:

A

being near someone with tuberculosis

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25
Which one of the following is NOT a typical symptom of influenza?
diarrhea
26
The most effective means of preventing influenza is:
annual vaccination
27
The patient is suffocating because of the accumulation of dead tissue and fibrin in her throat. What is the etiology of the symptoms?
Corynebacterium
28
A patient has a severe cough due to mucus accumulation and is suspected to have pertussis. What is the etiology of the symptoms?
Bordetella
29
Which one of the following is NOT an intracellular parasite?
Neisseria
30
Mycoplasma infection causes:
Walking pneumonia
31
T/F A positive tuberculosis skin test indicates that the patient has active tuberculosis.
False
32
All of the following are true of the common cold EXCEPT:
early treatment will drastically reduce the disease symptoms
33
T/F Treponema pallidum is a causative agent of Syphilis.
True
34
Which of the following pairs is NOT correctly matched for Gram reaction?
Neisseria gonorrhoeae – Gram-positive
35
Which one of the following is NOT a sexually transmitted pathogen?
Varicella-Zoster
36
T/F Bacteria are generally 1-2 micrometer in size.
True
37
Which one of the following is incorrect about viruses?
are usually visible under a standard light microscope
38
Which of the following have a membrane enclosed nucleus?
yeast cell
39
T/F Peptidoglycan is part of the cell wall of all living cells.
False
40
Which one of the following is incorrect about bacteria?
contain mitochondria
41
Cell wall of a Gram-negative bacterial cell consists of:
thin layer of peptidoglycan between cytoplasmic and outer membranes
42
Which of the statements regarding enzymes is false?
Enzymes increase an activation energy of reactions
43
T/F During the aerobic metabolism of glucose to CO2, the process that produces the most ATP for the cell is oxidative phosphorylation.
True
44
T/F During aerobic respiration of glucose, the terminal electron acceptor is oxygen.
True
45
T/F In the molecule ATP, useful energy for the cell is stored in carbon-carbon bonds.
False
46
T/F Most bacteria reproduce by binary fission.
True
47
RNA is made of:
ribonucleotides
48
Which molecules are composed of a chain of amino acids?
proteins
49
Transcription followed by translation are the steps of:
gene expression
50
Ribosomes are made of:
RNA and proteins
51
Which of the following statements about viruses is FALSE?
Viruses use their own catabolic enzymes
52
Phagocytic cells of the immune system are:
neutrophils, macrophages, dendritic cells
53
Which of the following makes IgG antibodies?
plasma B cell
54
IgG antibodies:
most abundant in blood
55
Lymphocytes involved in “cell-mediated” adaptive response are:
T Cells
56
Which one of the following statements about genital warts is FALSE?
lesions are always precancerous
57
An example of a latent viral infection is:
genital herpes
58
Most of the normal microbiota of the digestive system are found in the:
small intestine and large intestine
59
Which of the following is directly involved in the initiation of dental caries?
lactic acid
60
Streptococcus mutants that cause dental caries are:
gram positive
61
Periodontitis (and possible Alzheimer’s) is caused by:
Porphyromonas gingivalis
62
Shigella species are a common cause of gastrointestinal ________.
infections
63
Staphylococcus aureus is a common cause of gastrointestinal _________.
intoxications
64
The most common cause of traveler's diarrhea is:
E. Coli
65
Salmonella typhi is a causative agent of:
typhoid fever
66
How Dysentery is different from Diarrhea?
usually due to infection of the large intestine, mucus and blood can be present in the stools, and it is a severe diarrhea
67
"Rice water" stools and dehydration are characteristic of:
cholera
68
Many bacterial infections of the lower digestive tract are treated with:
water and electrolytes
69
intestinal flu is caused by
rotavirus
70
Helicobacter pylori is responsible for:
peptic ulcer disease
71
Disease caused by fecal-oral transmission are:
Cholera, Hepatitis A, Shigellosis, andTyphoid fever
72
Epidemics related to bacterial infection of the digestive system are typically caused by:
contaminated food and water
73
Which of the following causes inflammation of the liver?
hepatitis A virus
74
infection of the brain is also called
encephalitis
75
Bacterial encephalitis difficult to treat because:
many antibiotics cannot penetrate the blood-brain barrier
76
All of the following can directly cause meningitis EXCEPT:
Mycobacterium leprae
77
Arboviruses cause ________ and are transmitted by ________.
encephalitis; mosquitoes
78
Which of the following statements about rabies is FALSE?
most infections in the U.S. are the result of bites from infected dogs
79
Botulism and Tetanus is caused by a member of which genus?
clostridium
80
Tetanus and Botulism toxins are "AB toxins". Which of the following describes the enzymatic activity of tetanus toxin and of botulism toxin?
protease
81
Which of the following pairs is mismatched?
botulism – stimulates transmission of nerve impulse
82
A pathologist detects Negri bodies while examining a brain section taken at autopsy. What was the cause of death?
rabies
83
Exfoliative toxin secreted by Staphylococcus aureus is responsible for:
scalded skin syndrome
84
Tinea pedis infection results in:
ringworm disease

BIO SCI 101 (3 decks)

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