Quiz 1

Question 1

Define fungus

Answer 1

Eukaryotic organisms that are heterotrophic and digest their food extracellularly by secreting enzymes then absorbing the nutrients back into the cells

Question 2

Describe hyphae & explain their various characteristics and biological functions.

Answer 2

• tubular filaments that make up the body (thallus) of the fungus
• enzymatic “drills”
• hyphal tip has a spitzenkorper that emanates vesicles that grow with and fuse into the cell membrane

Question 3

Be able to diagram and describe the fungal cell wall.

Answer 3

inner to outer:
- vesicles fused to cell membrane
- fibrous layer: mostly made from chitin (unbranched carbohydrate)
- amorphous layer: made of straight and branched carbohydrates
- rodlet layer: made of hydrophobin proteins
- capsular layer (glycoprotein)- signals + senses

Question 4

Use proper terminology to diagram, describe and differentiate between different types of septa.

Answer 4

basidiomycota:
dolipore septum- parenthosomes that swell

ascomycota:
have woronin bodies

Question 5

Describe yeasts, and how they differ from mycelial fungi in terms of their morphology & reproduction.

Answer 5

SINGLE CELLED
budding or fission

Question 6

Explain dimorphism in Fungi.

Answer 6

fungi w both yeast and hyphal stages
eg: pathogenic fungi- grow hyphaelly normally but can grow in a yeast-like stage inside the human body

Question 7

pseudohyphae

Answer 7

in-between stage of yeast and hyphae