B3 Summer Yeast + Respiration

aerobic respirationin yeast + humans

glucose + oxygen = carbon dioxide + water (+ energy)

anaerobic respiration in yeast (fermentation)

glucose = ethanol (alcohol)+ carbon dioxide (+ energy)

anaerobic respiration in humans

glucose = lactic acid (+ energy) no carbon dioxide!

Yeast cell (single celled fungus) contains:

mitochondrion(ia) = site of respiration

ribosome - associated with protein formula

oil droplet

cytoplasm

nucleus

cell wall

cell surface membrane

Budding

yeast cell reproduction

asexual (no sex)

offspring clones (genetically identical to parent)

enzymes are secreted to digest bread

small, soluble molecules such as glucose and amino acids are absorbed into the hypha

can respire without oxygen (anaerobic respiration) produces carbon dioxide and ethanol

called fermentation

when there's oxygen -> aerobic respiration: produces more energy+ yeast can grow + reproduce