Bio - Energetics — Biology MCQs (Class 11)
Free chapter-wise Biology MCQs with answers for MDCAT, FSc and entry tests.
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#1 In chlorophyll-b, the porphyrine ring is attached to the:
A) Methyl group
B) Carboxyl group
C) Aldehyde group
D) Hydroxyle group
#2 Chlorophyll a and b chiefly absorb:
A) Violet & blue light
B) Orange light
C) Blue — red light
D) Red, orange light
#3 Which is least important in photosynthesis?
A) Red light
B) Blue light
C) Sunlight
D) Green light
#4 In chlorophyll "a" the group attached to porphyrine ring is:
A) Hydroxyl group
B) Methyl group
C) Carboxyl group
D) Aldehyde group
#5 Which of the following is present in the center of Porphyrine ring of chlorophyll?
A) Iron
B) Sodium
C) Potassium
D) Magnesium
#6 The center of porphyrine in the head region of hemoglobin is occupied by:
A) Iron
B) Magnesium
C) Sodium
D) Potassium
#7 The center of porphyrine ring of haemoglobin is occupied by:
A) Magnesium
B) Sodium
C) Iron
D) Potassium
#8 The pigments of chlorophyll a, b, and carotenoids are present in:
A) Stroma
B) Grana
C) Thylakoid membrane
D) Crista
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