View
916
Download
0
Category
Tags:
Preview:
DESCRIPTION
B4-11 anaerobic respiration
Citation preview
IB4.11.2H Images
© Oxford University Press 2011
Structures used in respiration in plant and animal cell, draw the cells in your book and label the structures.
IB4.11.2H Images
© Oxford University Press 2011
IB4.11.2H Images
© Oxford University Press 2011
Comparing aerobic and anaerobic respiration
•Recall how cells use energy released in respiration, including the synthesis of polymers•Understand aerobic and anaerobic respiration in providing energy•Describe cell structures and how they are involved in respiration
Keywords- anaerobic respiration, lactic acid, yeast, bacteria, ethanol
IB4.11.2H Images
© Oxford University Press 2011
Think of places or circumstances where oxygen levels are low.
?’
‘Can living things survive without oxygen?
IB4.11.2H Images
© Oxford University Press 2011
Glucose lactic acid (+energy released)
*You should be able to recall this word equation and describe why and where it happens (cell cytoplasm), just defining anaerobic as ‘without oxygen’ would not be enough to gain marks
IB4.11.2H Images
© Oxford University Press 2011
All living things carry out respiration. Some
organisms, such as plants, animals, bacteria, and
yeast can carry out aerobic and anaerobic
respiration. Some types of bacteria can only carry
out anaerobic respiration.
IB4.11.2H Images
© Oxford University Press 2011
glucose + oxygen
carbon dioxide + water
aerobic respiration
a lot of energy
glucose
lactic acid
anaerobic respiration in animal cells and bacteria
someenergy
glucose
alcohol + carbon dioxide
anaerobic respiration in plant cells and yeast
someenergy
IB4.11.2H Images
© Oxford University Press 2011
The 100-m sprint takes about 10–11 seconds. The heart and lungs cannot increase oxygen supply to the muscles fast enough, so most of the energy required during the short race comes from anaerobic respiration.
IB4.11.2H Images
© Oxford University Press 2011
The 100-m sprint takes about 10–11 seconds. The heart and lungs cannot increase oxygen supply to the muscles fast enough, so most of the energy required during the short race comes from anaerobic respiration.
IB4.11.2H Images
© Oxford University Press 2011
Germinating seeds respire anaerobically.
IB4.11.2H Images
© Oxford University Press 2011
Yeast cells can respire anaerobically until ethanol builds
up and becomes too toxic.
IB4.11.2H Images
© Oxford University Press 2011
Structure of a typical bacteria and yeast cell.
IB4.11.2H Images
© Oxford University Press 2011
IB4.11.2H Images
© Oxford University Press 2011
Venn diagramAerobic and anaerobic respiration
IB4.11.2H Images
© Oxford University Press 2011
In animals a major one is probably during intense activity to escape a predator micro-organisms to allow survival or as an adaptation to anaerobic conditions plants to allow roots to survive periods of low oxygen in waterlogged ground.
When is anaerobic respiration useful?
Recommended