Clicker/TA questions for exam 1

Question 1

What is the main difference between Gram+ and Gram- cell walls?
A) Peptidoglycan thickness and content
B) Presence of an outer membrane
C) Presence of LPS
D) A and C
E) All of the above

Answer 1

E

Question 2

Regarding parasites, it is important that the veterinarian:
A) Understand those parasites capable of causing zoonoses
B) Recognize which parasites cause clinical disease
C) Minimizes parasites’ impact on production animals
D) A and B
E) All of the above

Answer 2

E

Question 3

Which of the following viruses is smallest in size?
A) Poxvirus
B) Rhabdovirus
C) Parvovirus
D) Rotavirus

Answer 3

C

Question 4

An ectoparasite is an organism that:
A) Lives on the host
B) Lives in the host
C) Causes infestation
D) A and C
E) B and C

Answer 4

D

Question 5

Which of the following anatomical sites would not contain normal flora?
A) GI Tract
B) Skin
C) Lungs
D) Oropharynx
E) Genital tract

Answer 5

C

Question 6

Are all microbes dangerous?
A) All Microbes are dangerous
B) Most microbes are dangerous
C) Only Bacteria and Viruses
D) Most are not pathogens

Answer 6

D

Question 7

True or false: Mutualism is the only form of symbiosis

Answer 7

False

Question 8

True or false: A Resident microbe can become an opportunistic

Answer 8

True

Question 9

What is a fastidious organism?
A) Can be stained with an acid fast stain
B) Replicates quickly
C) Requires oxygen
D) Has complex nutritional req.
E) Does not req. oxygen

Answer 9

D

Question 10

Most bacterial pathogens will be:
A) Mesophiles
B) Thermophiles
C) Hemophiles
D) Psycrophile

Answer 10

A

Question 11

What is transplancental?
A) Organ Rejection
B) From mother to baby from milk
C) From mother to baby from Placenta

Answer 11

C

Question 12

True or false: Adhesin is a close association of bacteria cells to host cells

Answer 12

False

Question 13

Carrier animals
A) Show symptoms
B) Aquired from hospitals
C) Only happen in large populatons
D) Can spread the disease

Answer 13

D

Question 14

What is abnormal condition of body function called?
A) Disease
B) Infection

Answer 14

A

Question 15

Describe a bacteria that is stained pink/red and long and cylindrical.
A) Gram+ Rod
B) Gram- Rod
C) Gram+ Cocci
D) Gram- Cocci

Answer 15

B

Question 16

Which is a component of Prokaryotic cells?
A) Mitochondria
B) Endoplasmic Ret.
C) Pili
D) Nucleus
E) Cilia

Answer 16

C

Question 17

True or false: Antifungals work against bacteria

Answer 17

False

Question 18

Endospores, made of dipicolinic acid and calcium, are made for what reason?
A) To massively multiply
B) Stage prior to mitosis
C) To protect genetic information
D) Biproduct of endotoxins

Answer 18

C

Question 19

Describe a bacteria that is stained blue/purple and are spherical shaped.
A) Gram + Rods
B) Gram – Rods
C) Gram + cocci
D) Gram – Cocci

Answer 19

C

Question 20

Which of the following is true of Exotoxins?
A) They are produced to damage host cells
B) They are proteinaceous molecules
C) They are non-proteinaceous molecules
D) All the above
E) A and B

Answer 20

E

Question 21

Enzymes used to break down host cell integrity, such as hemolysins, hyaluronidase and nucleases are considered?
A) Adhesins
B) Cellular tropism
C) Invasins
D) Pores

Answer 21

C

Question 22

Sigma factors are used by bacteria to:
A) Control gene expression of virulence factors
B) Sense physiological conditions in the cell
C) Cause change in pathogen phenotypes
D) Both A and C

Answer 22

D

Question 23

Which type of virulence regulation includes sensory and response regulators to sense conditions and regulate transcription, respectively?
A) Sigma factors
B) Two-component system
C) A and b

Answer 23

B

Question 24

Viruses are considered:
A) Falcultative intracellular parasites
B) Obligate intracellular parasites
C) Obligate extracellular parasites
D) Falcultative extracellular parasites

Answer 24

B

Question 25

Viruses are surrounded by a capsid made of:
A) False, viruses are not surrounded by a capsid
B) Lipid
C) Protein
D) Calcium

Answer 25

C

Question 26

What is an envelope?
A) Lipid bilayer made by the virus
B) An extra covering of protein made by the virus
C) A lipid bilayer taken from the host cell
D) A series of capsomeres

Answer 26

C

Question 27

In viral replication, what is the step after ‘uncoating’?
A) Penetration
B) Attachment
C) Assembly and maturation
D) Synthesis of viral nucleic acid and protein

Answer 27

D (All Pretty Unicorns Sing A Rhyme)

Question 28

True or false: All vaccines are killed viruses

Answer 28

False

Question 29

In an ELISA test, an Indirect assay has how many antibodies?
A) False, no antibodies are ever used in an ELISA
B) 1
C) 2
D) 3

Answer 29

C

Question 30

True or false: Persistent infection often includes intensive shedding over a short period of time

Answer 30

False

Question 31

Virus A has an LD50 of 30 while Virus B has an LD50 of 50. Which one is less virulent?
A) Virus A
B) Virus B
C) Both are equally virulent
D) Neither will cause disease in a live animal

Answer 31

B

Question 32

Which of the following will assist in viral immune-evasion?
A) Adherins
B) Increase in the number of natural killer cells
C) Evasion of natural killer cells
D) A and C are both true

Answer 32

C

Question 33

In 1885, Louis Pasteur was credited for the first rabies virus vaccine. Rabies virus is infamous for traveling from the site of a bite wound to the brain. Pasteur had studied a virus which:
A) Is characterized by neurotropism
B) Is an obligate intracellular parasite
C) A and B are both true

Answer 33

C

Question 34

As a veterinarian, you should know what about parasites?
A) Which cause disease
B) Which are zoonotic
C) Diagostic tools
D) Treatments
E) How to minimalize impact on production
F) All the above

Answer 34

F

Question 35

What does the scolex belong to?
A) Protazoe
B) Mite
C) Nematode
D) Cestode
E) Vector

Answer 35

D

Question 36

Which is  round, elongated with separate sexes?
A) Nematodes
B) Cestodes
C) Flukes
D) Protazoa

Answer 36

A

Question 37

True or false: Trematodes have a direct life cycle

Answer 37

False

Question 38

Which statement is true?
A) Ectoparasites cause infestations
B) Endoparasites cause Infections
C) Ectoparasites cause infections
D) Endoparasites cause infestations
E) AB
F) CD

Answer 38

E

Question 39

True or false: The amount of parasites in a host is not important

Answer 39

False

Question 40

True or false: Understanding the Disease Triad is really important for diagnosis, treatment and prevention.

Answer 40

True

Question 41

Ancylostoma tubaeforme are found attached in the intestines of the host. This parasite has a large mouth cavity, also know as a buccal cavity. What is this attachment considered?
A) Mechanical or biting mouthparts
B) Molecular interaction
C) Adhesins
D) The premise is false, ancylostoma tubaerforme is found in the liver

Answer 41

A

Question 42

Syngamus trachea, a nematode, infects earthworms without further development. Infected earthworms are consumed by wild fowl and cause disease.These earthworms are considered to be:
A) Intermediate hosts
B) Paratenic hosts
C) Reservoir
D) Incidental host

Answer 42

B

Question 43

The measurement of disease-causing ability is \_\_\_\_\_\_\_\_\_\_\_\_, while having the ability to cause such disease is \_\_\_\_\_\_\_\_\_\_\_.
A) LD50; Infectious
B) Virulence; Pathogenicity
C) Infective Dose; Contagious
D) Pathogenicity; Pathogenic

Answer 43

B

Question 44

In order to identify the causative agent of a specific disease which of the following must be true:
A) There must be a determined experimental LD50
B) The same pathogen must be present in all cases of the disease
C) Samples must be submitted for PCR testing
D) All infected animals must show symptoms of the disease

Answer 44

B