1. Why are fungi not susceptible to antibacterial agents?

A. They lack peptidoglycan in cell walls B. They have chlorophyll in their membranes C. They do not have nuclei D. Their membranes are made of phospholipids only

2. How do yeasts typically reproduce asexually?

A. By forming sporangia B. Through binary fission similar to bacteria and budding C. Only through sexual spores D. By fragmentation of hyphae

3. Which of the following algal genera are unicellular?

A. Ulva B. Volvox C. Chlamydomonas D. All are multicellular

4. Why are fungal cell membranes unique compared to bacterial membranes?

A. They lack sterols. B. They contain ergosterol instead of phospholipids. C. They contain chlorophyll. D. They are made of cellulose.

5. How does binary fission in yeasts differ from that in bacteria?

A. Yeasts do not use binary fission B. Yeasts undergo mitosis and bud after nuclear division, unlike bacteria C. Bacteria only reproduce sexually D. Yeasts replicate by spore formation only

6. What is the typical morphology of yeast colonies on media?

A. Fluffy and powdery B. Moist, creamy, and opaque C. Filamentous and wooly D. Pigmented and rough

7. What is the function of chitin in fungi?

A. Provides energy for growth B. Makes up the cell membrane C. Constitutes part of the fungal cell wall D. Acts as a reproductive spore

8. What reproductive process do Actinomycetes use to produce new organisms?

A. Binary fission only B. Budding C. Spore formation from filamentous cells D. Sexual reproduction by gamete fusion

9. What property of some fungal species allows them to switch forms based on temperature?

A. Production of ergosterol B. Thermal dimorphism C. Cellular respiration speed D. Presence of chlorophyll

10. What is the significance of a thick cell wall in chlamydospores?

A. It helps in sexual reproduction B. It provides protection and resistance in adverse conditions C. It enables rapid spore dispersal by wind D. It assists in photosynthesis

11. Which of these is an example of a medically important dimorphic fungus?

A. Aspergillus sp. B. Histoplasma capsulatum C. Saccharomyces sp. D. Fusarium sp.

12. What trait is common to dimorphic fungi?

A. They produce spores only at high temperature B. They switch between yeast and mold forms depending on environmental conditions C. They undergo sexual reproduction exclusively D. They are always pathogenic

13. What is a pseudohypha in yeasts such as Candida albicans?

A. A cluster of spores arranged in a circle B. A series of buds remaining attached forming a filamentous structure C. A type of sexual spore D. A fungal hypha with chloroplasts

14. Why are dimorphic fungi significant medically?

A. They produce both antibiotics and toxins. B. They can switch between yeast and mold forms in the human body. C. They only grow in water. D. They never cause disease.

15. What advantage do asexual spores provide to filamentous fungi?

A. They form sexual zygotes quickly. B. They are lightweight and can disperse widely by wind. C. They allow fungi to photosynthesize. D. They provide resistance to antibiotics.

16. What is a defining feature of the fungal cell wall?

A. It contains cellulose chains only. B. It contains sterols identical to bacterial membranes. C. It consists of a network of polysaccharides such as chitin and glucan. D. It is composed primarily of peptidoglycan.

17. Which substance is unique to the fungal cell membrane as compared with bacterial cell membranes?

A. Ergosterol B. Cholesterol C. Peptidoglycan D. Cellulose

18. What role do mitochondria play in bacterial cells?

A. Energy production in the form of ATP B. Photosynthesis C. Spore formation D. Protein synthesis

19. Which structural feature contributes to the shape of fungal cells?

A. Cell membrane only B. Polysaccharide chains in the cell wall C. Chloroplast arrangement D. Cytoplasmic streaming

20. Which of the following best describes the process of alternation of generations in algae?

A. Asexual reproduction through binary fission only B. Sexual reproduction producing haploid organisms alternated with diploid stages C. Only asexual reproduction by spore formation D. Binary fission producing diploid cells exclusively

21. Why are fungal mating types designated as "+" and "-" rather than male and female?

A. Because fungi do not reproduce sexually B. Because their thalli do not show morphological differences between sexes C. To simplify laboratory identification D. Because fungi only have asexual reproduction

22. What is the function of sporangiospores in filamentous fungi?

A. They serve as sexual spores. B. They form inside a sac called sporangium and help in asexual reproduction. C. They protect the fungi against heat. D. They dissolve the fungal cell wall.

23. What type of reproductive cell do algae produce during sexual reproduction?

A. Haploid gametes that fuse to form a diploid zygote B. Only diploid spores C. Conidiospores born on stalks D. Chlamydospores inside hyphae

24. What feature of yeast morphology is typically not useful for identification?

A. Colony color B. Microscopic morphology C. Molecular sequencing D. Size of the cells

25. In algae, what is typically formed when sex cells fuse during sexual reproduction?

A. Haploid spore B. Dikaryon condition C. Diploid zygote D. Binary fission product

26. Which is NOT a factor influencing bacterial generation time?

A. Nutritional factors B. Genetic factors C. Environmental temperature D. Presence of chloroplasts

27. How do fungi differ from bacteria in response to antibacterial agents?

A. Fungi are usually susceptible to antibacterial agents B. Fungi produce antibacterial agents themselves C. Fungi lack cell walls and are thus resistant D. Fungi are not affected by antibacterial agents due to their cell structure

28. What does the term "dimorphic fungi" refer to?

A. Fungi that can produce two different types of toxins B. Fungi that exhibit both yeastlike and filamentous forms under different conditions C. Fungi that reproduce only sexually D. Fungi that have two distinct cell walls

29. What is the significance of fungal spores being lightweight?

A. They do not require water to germinate B. They can disperse widely through wind C. They can immediately infect a host D. They resist heat and radiation

30. What happens during the meiosis stage in fungal sexual reproduction?

A. Haploid cells fuse to form dikaryon B. Diploid nuclei restore haploid state through division C. Spores form via budding D. Sexual spores are produced outside the thallus

31. What distinguishes viral groups primarily?

A. The type of genetic material and capsid shape B. The color and size of viral particles C. The presence of a nucleus and mitochondria D. Their ability to photosynthesize

32. During sexual reproduction in fungi, why are mating types designated as "+" and "-" rather than male or female?

A. Because fungi have external reproductive organs B. Because their thalli are morphologically identical C. Because only one mating type produces spores D. Because fungi reproduce only asexually

33. What determines the generation time of a bacterial species?

A. Only genetic factors B. Absence of a cell wall C. Both nutritional and genetic factors D. The presence of spores

34. In fungi, what is the main difference between sexual and asexual reproduction?

A. Sexual reproduction produces spores in sporangia only B. Sexual reproduction involves the fusion of two different mating types’ nuclei C. Asexual reproduction only occurs in yeast forms D. Asexual reproduction requires two parents

35. What reproductive strategy do many algae use besides sexual reproduction?

A. Binary fission only B. Fragmentation and spore formation asexually C. Budding similar to yeasts D. Producing conidiospores

36. Which major fungal group produces colonies that are moist, creamy, and opaque?

A. Yeasts B. Filamentous molds C. Dimorphic fungi D. Lichens

37. What is the role of the diploid zygote in algae reproduction?

A. To form binary fission cells B. To develop into a sexual spore under favorable conditions C. To produce conidiospores immediately D. To initiate photosynthesis

38. What does sexual reproduction in algae result in?

A. A diploid zygote that develops into a sexual spore B. Only haploid daughter cells C. Production of conidiospores only D. Formation of binary fission cells

39. What is the primary reproductive feature of filamentous fungi?

A. They reproduce exclusively by binary fission. B. They produce fluffy or powdery colonies with pigmented hyphae and spores. C. They only form asexual spores within sacs called sporangia. D. They have no reproductive structures.

40. What best describes the spores called conidiospores in fungi?

A. Produced inside a sac called sporangium B. Produced at tips or sides of hyphae but not within a sac C. Have thick cell walls inside hyphae D. Exclusively sexual spores

41. What distinguishes viral groups primarily according to their type of genetic material?

A. Presence of envelope B. Shape of capsid coat C. RNA or DNA as genetic material D. Size of the viral particle

42. What characteristic is NOT used to distinguish different viral groups?

A. Kind of host cells they infect B. Color of the viral particle C. Presence or absence of envelope D. Shape of the capsid coat

43. Which of the following correctly characterizes the vegetative body of a fungus?

A. It is called a zygote. B. It is the reproductive spore. C. It is known as thallus or thalli. D. It is always multicellular and filamentous.

44. Which group of algae does Ulva belong to?

A. Green algae B. Brown algae C. Red algae D. Blue-green algae

45. How do blastospores form in yeasts?

A. By binary fission of hyphae B. Through budding from a vegetative mother cell C. By fusion of gametes D. By fragmentation of sporangia

46. Why do molds have microscopic hyphal and spore pigmentation considered useful?

A. They help in photosynthesis B. They assist in differentiating clinically important fungi C. They improve spore dispersal D. They cause antibiotic resistance

47. Which of the following best describes the process of sexual reproduction in fungi?

A. Haploid cells fuse to form a dikaryon, followed by nuclear fusion to form a diploid nucleus, then meiosis restores the haploid state producing spores. B. Fungi reproduce by binary fission producing identical haploid cells. C. Fungi produce spores asexually inside a sac called sporangium without nuclear fusion. D. Yeasts bud off daughter cells that remain attached forming pseudohyphae.

48. Which structural component is unique to fungal cell membranes compared to bacterial membranes?

A. Phospholipids B. Peptidoglycan C. Ergosterol D. Cellulose

49. Which type of fungal spore is produced within a sac called a sporangium?

A. Conidiospore B. Chlamydospore C. Sporangiospore D. Blastospores

50. How long can the dikaryotic stage last in fungal sexual reproduction?

A. Only seconds B. Hours to years C. Always one generation time D. It does not exist in fungi