Biology 11 chapter 4
Bioenergetics - 13
1.
Photorespiration takes place when?
a) More oxygen is present
b) more carbondioxide is present
c) more nitrogen is present
d) more hydrogen is present
2.
When there is more carbon dioxide, rubisco acts as?
a) Carboxylase
b) decarboxylase
c) oxygenase
d) deoxygenase
3.
When oxygen is present in greater amount, rubisco acts as?
a) Oxygenase
b) deoxygenase
c) carboxylase
d) decarboxylase
4.
When rubisco acts as oxygenase, it means that?
a) It adds oxygen to rubp
b) it removes oxygen from rubp
c) it adds carbon dioxide to rubp
d) it removes carbon dioxide from rubp
5.
Carboxylation means?
a) Addition of carbon
b) removal of carbon
c) addition of oxygen
d) removal of oxygen
6.
Phosphoglycolate losses phosphate to form glycolate. This is called as?
a) Dephosphorylation
b) photophosphorylation
c) photorespiration
d) carboxylation
7.
Dephosphorylation of phosphoglycolate takes place with in the?
a) Chloroplast
b) mitochondria
c) peroxysomes
d) ribosomes
8.
Where does photorespiration takes place in plant cell?
a) In peroxysome
b) in glyoxysome
c) in ribosome
d) in chloroplast
9.
Conversion of rubp in a series of reactions is known as?
a) Photorespiration
b) photophosphorylation
c) photosynthesis
d) glycolysis
10.
Photorespiration is?
a) Reverse to calvin cycle
b) same to calvin cycle
c) reverse to kreb cycle
d) same to kreb cycle
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