Biochemistry
Test 2 Lecture 32-33
Compiled By Simon Mwangi
Edition: 2024/25
, Science | Biochemistry I of XIII pages
1. ___ is the O2 carrier protein of the blood.
hemoglobin
2. ___ is an O2 storage protein found in muscle
myoglobin
3. Hemoglobin has a _______ affinity for O2 in the lungs, which promotes O2 uptake and has a ____ affinity
high
lower
protein intelligence
4. Hemoglobin assists in the transport of CO2 from ___ to the ___
tissues
lung
5. High concentrations of ___ provide an O2 reserve in the muscles of diving birds and mammals.
myoglobin
store O2 in muscles, dont need to breathe when diving
6. Myoglobin is composed of ___ helixes
aplha
7. The heme of myoglobin is bound ___
tightly but not covalently, can come off under extreme conditions
8. Heme is attached to myoglobin by ___ and ___
proximal histidine
distal histidine
9. The proximal histidine of myoglobin attaches to the ___
the distal histidine ___
iron of the heme
hovers above where O2 will bind, Water sits in that places when waiting for O2
10. iron in hemoglobin is in the ___ state
+2
11. when O2 is not bound to iron of hemoglobin the iron is ___
when O2 is bound to the iron of hemoglobin the iron is ___
big and pulled down by the proximal histidine
now in +3 state, gets smaller and is pulled in line with the heme
Biochemistry 2024/25 Edition
Test 2 Lecture 32-33
Compiled By Simon Mwangi
Edition: 2024/25
, Science | Biochemistry I of XIII pages
1. ___ is the O2 carrier protein of the blood.
hemoglobin
2. ___ is an O2 storage protein found in muscle
myoglobin
3. Hemoglobin has a _______ affinity for O2 in the lungs, which promotes O2 uptake and has a ____ affinity
high
lower
protein intelligence
4. Hemoglobin assists in the transport of CO2 from ___ to the ___
tissues
lung
5. High concentrations of ___ provide an O2 reserve in the muscles of diving birds and mammals.
myoglobin
store O2 in muscles, dont need to breathe when diving
6. Myoglobin is composed of ___ helixes
aplha
7. The heme of myoglobin is bound ___
tightly but not covalently, can come off under extreme conditions
8. Heme is attached to myoglobin by ___ and ___
proximal histidine
distal histidine
9. The proximal histidine of myoglobin attaches to the ___
the distal histidine ___
iron of the heme
hovers above where O2 will bind, Water sits in that places when waiting for O2
10. iron in hemoglobin is in the ___ state
+2
11. when O2 is not bound to iron of hemoglobin the iron is ___
when O2 is bound to the iron of hemoglobin the iron is ___
big and pulled down by the proximal histidine
now in +3 state, gets smaller and is pulled in line with the heme
Biochemistry 2024/25 Edition
