Question 1

Which of the following statements regarding fungi is FALSE?

Accepted Answer

Most fungi are not pathogenic for humans; only a small percentage of fungi are capable of causing diseases in humans.

Question 2

Which of the following pairs is mismatched?

Accepted Answer

Coenocytic hyphae are actually hyphae without cross-walls, not with cross-walls.

Question 3

All of the following are characteristic of the Platyhelminthes EXCEPT that they

Accepted Answer

Platyhelminthes, or flatworms, have a simple digestive system and a less complex nervous system compared to other animals.

Question 4

Table 12.1
1- Arthroconidium 5-Chlamydoconidium
2- Ascospore 6-Conidiospore
3- Basidiospore 7-Sporangiospore
4- Blastoconidium 8-Zygospore
-In Table 12.1, which of these spores are characteristic of Rhizopus?

Accepted Answer

Rhizopus is a genus of fungi that produces sporangiospores and zygospores, which are characteristic of this genus.

Question 5

Table 12.1
1- Arthroconidium 5-Chlamydoconidium
2- Ascospore 6-Conidiospore
3- Basidiospore 7-Sporangiospore
4- Blastoconidium 8-Zygospore
-In Table 12.1, which is a thick-walled spore formed as a segment within a hypha?

Accepted Answer

Chlamydoconidium is a thick-walled spore formed as a segment within a hypha.

Question 6

Which of the following statements about the oomycote algae is FALSE?

Accepted Answer

Oomycotes do not have chlorophyll; they are not true algae but are more closely related to fungi. They are heterotrophic and obtain nutrients through absorption.

Question 7

Which of the following statements about helminths is FALSE?

Accepted Answer

Not all helminths are parasites; some can be free-living.

Question 8

Which of the following tends to be more complex in a parasitic helminth than in free -living helminths?

Accepted Answer

Parasitic helminths often have a more complex reproductive system to ensure the survival and transmission of their offspring, while other systems may be reduced due to their parasitic lifestyle.

Question 9

In mid-December, a woman with insulin-dependent diabetes who had been on prednisone fell and received an abrasion on the dorsal side of her right hand. She was placed on penicillin. By the end of January, the ulcer had not healed, and she was referred to a plastic surgeon. On January 30, a swab of the wound was cultured at 35°C on blood agar. On the same day, a smear was made for Gram staining. The Gram stain showed large (10 μm) cells. Brownish, waxy colonies grew on the blood agar. Slide cultures set up on February 1 and incubated at 25°C showed septate hyphae and single conidia. The most likely cause of the infection is a

Accepted Answer

The presence of septate hyphae and single conidia, along with the growth of brownish, waxy colonies, suggests a dimorphic fungus, which can exist in both yeast and mold forms.

Question 10

Table 12.1
1- Arthroconidium 5-Chlamydoconidium
2- Ascospore 6-Conidiospore
3- Basidiospore 7-Sporangiospore
4- Blastoconidium 8-Zygospore
-In Table 12.1, which of these spores are characteristic of Penicillium?

Accepted Answer

The answer of Table 12.1
1- Arthroconidium 5-Chlamydoconidium
2- Ascospore 6-Conidiospore
3- Basidiospore...

Question 11

In the malaria parasite life cycle, humans are the host, while mosquitoes are the host as well as the vector.

Accepted Answer

In the malaria parasite life cycle, humans are the intermediate host where asexual reproduction occurs, and mosquitoes are the definitive host where sexual reproduction occurs.

Question 12

Which of the following pairs are mismatched? 1. arthroconidium  formed by fragmentation
2) sporangiospore  formed within hyphae
3) conidiospore  formed in a chain
4) blastoconidium  formed from a bud
5) chlamydoconidium  formed in a sac

Accepted Answer

Sporangiospores are formed within a sporangium, not within hyphae, and chlamydoconidia are thick-walled spores formed within hyphae, not in a sac.

Question 13

Seventeen patients in ten hospitals had cutaneous infections caused by Rhizopus. In all seventeen patients, Elastoplast bandages were placed over sterile gauze pads to cover wounds. Fourteen of the patients had surgical wounds, two had venous line insertion sites, and one had a bite wound. Lesions present when the bandages were removed ranged from vesiculopustular eruptions to ulcerations and skin necrosis requiring debridement. Fungi are more likely than bacteria to contaminate bandages because they

Accepted Answer

Fungi, including Rhizopus, can tolerate low-moisture conditions, which makes them more likely to contaminate bandages compared to bacteria.

Question 14

Which of the following pairs is mismatched?

Accepted Answer

Green algae are eukaryotic, not prokaryotic. They have a true nucleus and other membrane-bound organelles.

Question 15

Helminthic diseases are usually transmitted to humans by

Accepted Answer

Helminthic diseases are typically transmitted to humans through the gastrointestinal route, often via ingestion of contaminated food or water containing the eggs or larvae of the parasites.

Question 16

Table 12.1
1- Arthroconidium 5-Chlamydoconidium
2- Ascospore 6-Conidiospore
3- Basidiospore 7-Sporangiospore
4- Blastoconidium 8-Zygospore
-In Table 12.1, which of these spores are asexual spores?

Accepted Answer

Arthroconidium, Blastoconidium, Chlamydoconidium, Conidiospore, and Sporangiospore are asexual spores.

Question 17

Which of the following statements is FALSE?

Accepted Answer

Fungal spores are not as resistant to heat and chemical agents as bacterial endospores, which are known for their high resistance.

Question 18

Which of the following statements regarding lichens is FALSE?

Accepted Answer

Lichens are a mutualistic relationship between a fungus and an alga (or cyanobacterium), not a protozoan.

Question 19

Which of the following pairs is mismatched?

Accepted Answer

Anamorphs are fungi that reproduce asexually and do produce spores, typically conidiospores.

Question 20

Which of the following statements regarding protozoa is FALSE?

Accepted Answer

Most protozoa do not cause disease; only a small fraction are pathogenic to humans.

Quiz 12: The Eukaryotes: Fungi, Algae, Protozoa, and Helminths

Which of the following statements regarding fungi is FALSE?

Which of the following pairs is mismatched?

All of the following are characteristic of the Platyhelminthes EXCEPT that they

Table 12.1 1- Arthroconidium 5-Chlamydoconidium 2- Ascospore 6-Conidiospore 3- Basidiospore 7-Sporangiospore 4- Blastoconidium 8-Zygospore -In Table 12.1, which of these spores are characteristic of Rhizopus?

Table 12.1 1- Arthroconidium 5-Chlamydoconidium 2- Ascospore 6-Conidiospore 3- Basidiospore 7-Sporangiospore 4- Blastoconidium 8-Zygospore -In Table 12.1, which is a thick-walled spore formed as a segment within a hypha?

Which of the following statements about the oomycote algae is FALSE?

Which of the following statements about helminths is FALSE?

Which of the following tends to be more complex in a parasitic helminth than in free -living helminths?

Table 12.1 1- Arthroconidium 5-Chlamydoconidium 2- Ascospore 6-Conidiospore 3- Basidiospore 7-Sporangiospore 4- Blastoconidium 8-Zygospore -In Table 12.1, which of these spores are characteristic of Penicillium?

In the malaria parasite life cycle, humans are the host, while mosquitoes are the host as well as the vector.

Which of the following pairs are mismatched? 1. arthroconidium  formed by fragmentation 2) sporangiospore  formed within hyphae 3) conidiospore  formed in a chain 4) blastoconidium  formed from a bud 5) chlamydoconidium  formed in a sac

Which of the following pairs is mismatched?

Helminthic diseases are usually transmitted to humans by

Table 12.1 1- Arthroconidium 5-Chlamydoconidium 2- Ascospore 6-Conidiospore 3- Basidiospore 7-Sporangiospore 4- Blastoconidium 8-Zygospore -In Table 12.1, which of these spores are asexual spores?

Which of the following statements is FALSE?

Which of the following statements regarding lichens is FALSE?

Which of the following pairs is mismatched?

Which of the following statements regarding protozoa is FALSE?