Respiration

Question 1

Carbohydrates + ___ —> ______+H2O+______

Answer 1

Carbohydrates + O2 —-> CO2+ H2O+ATP (energy)

Question 2

name the 3 reactions in proper sequence that constitute the overall process of respiration

Answer 2

glycolysis, krebs cycle, and electron transport chain

Question 3

what 3 cellular sites do 3 respiration reactions occur?

Answer 3

cytoplasm, mitochondria, and mitochondria membrane

Question 4

list 2 main functions of respiration in plants

Answer 4

1. to convert chemical energy in to usable energy by oxidizing photosynthates 2. provide carbon compounds needed for the synthesis of building blocks for the various structural and functional components of the cell

Question 5

write the formula for Q10

Answer 5

rate at (t+10 degree)C/ rate at t degree C

Question 6

what does this mean: Q10 for respiration is 2 between temps 0C and 40C

Answer 6

generally speaking with each 10C increase respiration increases two-fold this plant has typical respiration

Question 7

explain reason for growth decline in graph at temps greater than 30C

Answer 7

at 30C the temp is optimal for plant growth because photosynthesis still exceeds respiration as temperature increases past this point respiration is greater than photosynthesis and growth declines.

Question 8

one of the negative consequences of climate change and global warming scenario on plant growth and productivity could potentially involve its effect on respiration. How?

Answer 8

the warmer night temps with climate change will reduce the sugar content in food crops because of the increased respiration at night. this could decrease overall crop yields

Question 9

justify this statement: red skinned apples grown in NW typically have deeper pigmentation

Answer 9

the cooler night temps typically of this area reduce respiration at night which makes more sugars available for anthocyanin production the following day

Question 10

define pneumatophores

Answer 10

roots that protrude out of the water and aid in gas exchange through lenticels

Question 11

define aerenchyma

Answer 11

network of intercellular spaces that run from the leaves to the roots and provide a continuous pathway for oxygen

Question 12

what are the roles of pneumatophores and aerenchyma

Answer 12

they aid in gas exchange in low oxygen environments. they are typically found in aquatic plants especially where standing water is very common

Question 13

define CA storage

Answer 13

controlled atmosphere storage

Question 14

what is the purpose of CA storage

Answer 14

long term storage of fruit while maintaining the quality

Question 15

how is CA storage accomplished?

Answer 15

low temperatures and low O2 levels reduce respiration