Exam (elaborations)
Bio 1108 Chapter 32 - Fungi Questions & answers
Bio 1108 Chapter 32 - Fungi Questions & answers
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Bio 1108 Chapter 32 - Fungich 32, sec 32.1
fungi - ANS-heterotrophs --> absorb organic molecules directly from the environment
ch 32, sec 32.1
2 problems - ANS-1. large, more complex molecules cannot be absorbed. So fungi
secrete a multitude of enzymes that break them down into smaller compounds
2. Can't move so they need to grow to find food
ch 32, sec 32.1
hyphae - ANS-a highly branched multicellular filament that provides a large surface area
for absorbing nutrients
ch 32, sec 32.1
mycelium - ANS-a network of branching hyphae
-maintain slender form by growing only at the tips
-can grow very large
ch 32, sec 32.1
chitin - ANS-a modified polysaccharide containing nitrogen that makes up the cell walls
of fungi
-assists turgor pressure by preventing swelling and rupturing of hyphae
ch 32, sec 32.1
septa (septum) - ANS-partitions between cells, have pores that allow transport of
solutes along the hyphae
ch 32, sec 32.1
yeasts - ANS-fungi that grow as a single cells and do not form hyphae
-most divide by budding
ch 32, sec 32.1
cellulose - ANS-the principle component of plant cells
-most abundant biomolecule on and within soils
ch 32, sec 32.1
lignin (in wood) - ANS-substance in vascular plants that makes cell walls rigid
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