Which of the following microorganisms lacks both DNA and RNA?
Anonymous Quiz
90%
Prions
4%
Viruses
3%
Fungi
0%
Algae
3%
Protozoa
What is the primary role of sterols in eukaryotic cell membranes?
Anonymous Quiz
10%
They provide nutrients to the cell
86%
They maintain the cell's structural integrity
2%
They assist in protein synthesis
2%
They are absent in eukaryotes but present in prokaryotes
2%
They help in DNA replication
Which of the following statements about viruses is INCORRECT?
Anonymous Quiz
3%
They have no cellular structure
1%
They are obligate intracellular parasites
91%
They contain both DNA and RNA simultaneously
1%
They depend on host cells to replicate
3%
They are among the smallest infectious agents
Mycoplasma is unique among bacteria because:
Anonymous Quiz
10%
It lacks sterols in its cell membrane
1%
It has a true nucleus
81%
It contains no cell wall
3%
It has 80S ribosomes like eukaryotes
4%
It has a thicker peptidoglycan layer
Which of the following best describes the DNA organization in prokaryotes?
Anonymous Quiz
3%
DNA is contained in a true nucleus
2%
DNA is linear and associated with histones
71%
DNA is organized as a long folded thread in the nucleoid
23%
DNA is circular and membrane-bound
2%
DNA is found in multiple chromosomes
What is the composition of the bacterial cell wall that gives it strength?
Anonymous Quiz
14%
Sterols
1%
Lipopolysaccharide
80%
Peptidoglycan
1%
Protein subunits
4%
Phospholipids
38. Anaemia of Diphyllobothrium latum is due to:
Anonymous Quiz
4%
a) Iron deficiency.
4%
b) Blood loss.
89%
c) Vitamin B12 deficiency.
4%
d) Haemolysis of red blood cells.
❤1
1. The definitive host is:
Anonymous Quiz
5%
a) Host in which the larval asexual phase of parasite development occurs.
89%
b) Host in which the adult or sexual phase of parasite development occurs.
2%
c) An insect which transmits a parasite to its host.
5%
d) A host harboring the parasite in an arrested stage of development.
Taenia solium is more dangerous than Taenia saginata due to:
Anonymous Quiz
20%
a) Infection can occur by ingestion of Cysticercus cellulosae.
0%
b) Infection can occur by ingestion of Cysticercus bovis.
75%
c) It can cause cysticercosis.
5%
d) Infection occurs by eating pork.
Only one intermediate host is required in the life cycle of:
Anonymous Quiz
18%
a) Heterophyes.
10%
b) Diphyllobothrium latum.
6%
c) Diphyllobothrium mansoni.
65%
d) Taenia sagniata.
🔥1
all trematodes are hermaphrodites except:
Anonymous Quiz
3%
Hetrophes hetrophes
2%
Fasciola
94%
Schistosoma
2%
Tenia saginata
which the only Trematode does lay a mature operculated egg?
Anonymous Quiz
68%
Heterophes Heterophes
6%
Fasciola
19%
Schistosoma
8%
Diphyllopothrium mansoni
In which cestode man is considered an IH?
Anonymous Quiz
12%
Diphyllopothrium Latum
18%
Echinococcus granulosis
33%
Hymenolepis nana
37%
Taenia Solium
In Which of the following man is considered both DH, IH?
Anonymous Quiz
12%
Diphyllopothrium Latum
7%
Taenia Saginata
64%
Taenia Solium
17%
Multiceps Multiceps
Why does Heterophes Heterophes cause esinophillia?
Anonymous Quiz
21%
As it is a parasite.
24%
Immune Cells invade small intestine developing interleukins which increses no. of esinophils.
43%
It forms small eggs that is absorbed through small intestine.
13%
It migrated at first through human body stimulating immunity.
❤1
- All of the following are true about bronchopneumonia except:
Anonymous Quiz
13%
a- It is an inflammation of the lung centered on the bronchioles
17%
b- Characterized by patchy areas of consolidation
4%
c- Commonly bilateral & basal
65%
d- The inflammation is fibrinous in nature
Pathological features of bronchopneumonia include:
Anonymous Quiz
5%
a- It occurs most commonly in the middle age
15%
b- It is commonly caused by viral infections
70%
c- Complications are very common
10%
d- It occurs diffusely and centered on the alveoli
👍1
All of the following agents could be a cause of atypical pneumonia except:
Anonymous Quiz
57%
a- Hemophilus influenza
13%
b- Influenza viruses
13%
c- Adenoviruses
17%
d- Mycoplasma pneumonia