Types of microorganisms

Question 1

_____ are simple, single-celled microorganisms that reproduce by splitting in two, are widely dispersed in nature, and are capable of causing disease in humans

Answer 1

Bacteria

Question 2

Bacteria (and certain other microbes) can be classified by their reaction when exposed to dyes in a procedure called ____ ______.

Answer 2

Gram staining

Question 3

Bacteria that stain purple or blue are referred to as

Answer 3

Gram Positive

Question 4

Bacteria that stain pink are referred to as

Answer 4

Gram Negative

Question 5

Gram positive bacteria commonly recovered from ocular infections are:

Answer 5

Actinomyces species, Bacillus cereus, Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, Streptococcus pyogenes

Question 6

Gram negative bacteria commonly recovered from ocular infections are:

Answer 6

Haemophilus influenzae, Moraxella catarrhalis, Moraxella lacunata, Neisseria gonorrhoeae, Streptococcus viridans group

Question 7

________ _________ is a frequent cause of blepharitis, conjunctivitis, and infectious keratitis

Answer 7

Staphylococcus Aureus

Question 8

As a group, gram _____-associated infections are more serious in their natural course

Answer 8

gram Negative

Question 9

_______ is a common contaminant in eyedrops, cosmetics, and hottubs. Can also be associated with contact lens overwear

Answer 9

Pseudomonas

Question 10

______ _______ transmitted through sexual contact or congenital exposure in an infected birth canal can cause a hyperacute conjunctivitis

Answer 10

Neisseria gonorrhoeae

Question 11

______ ______ is responsible for a myriad of ocular infections including neonatal conjunctivitis, inclusion conjunctivitis, and trachoma

Answer 11

Chlamydia trachomatis

Question 12

a microorganism smaller than the smallest bacterium that has no cellular structure and can cause infectious disease is a

Answer 12

Virus

Question 13

Members of the _______ family include, HSV-1, HSV-2, VZV (varicella zoster virus), CMV (cytomegalovirus), and EBV (Epstein-Barr virus)

Answer 13

Herpes Virus

Question 14

___ ocular infections can be recurrent and may come back in a variety of forms

Answer 14

HSV

Question 15

_______ can reactivate producing shingles which can involve the eye resulting in a painful, severe, and sometimes blinding disease called Herpes Zoster Ophthalmicus.

Answer 15

VZV (varicella zoster virus)

Question 16

_____ _____, is an ocular infection due to cytomegalovirus and is commonly seen in patients infected with HIV

Answer 16

CMV retinitis

Question 17

Infections from the ____ family are responsible for 2 distinct and common ophthalmic syndromes: Epidemic Keratoconjunctivitis (EKC) and pharyngoconjunctival fever (PCF), also known as Pink Eye

Answer 17

Adenovirus

Question 18

____ are multicellular microorganisms with a more complex structure than that of bacteria and is divided into 2 groups: yeasts and molds

Answer 18

Fungi

Question 19

Fungal infections are more commonly seen in warmer, moister climates such as those in the _________

Answer 19

Southeastern US

Question 20

_______ are relatively large and complex single-celled microorganisms found in fresh and salt water, soil, plants, insects, and animals

Answer 20

Protozoa

Question 21

______ are extremely small pathologic protein elements responsible for brain disorders that occur in certain animals and humans

Answer 21

Prions