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Questions and Answers
What is the main reason for the red color of blood?
What is the main reason for the red color of blood?
- Absorption of sunlight by blood vessels
- High iron content in plasma
- Presence of respiratory pigment haemoglobin in RBCs (correct)
- Interaction of RBCs with oxygen
Which organelle is absent in mature mammalian RBCs?
Which organelle is absent in mature mammalian RBCs?
- Mitochondria
- Nucleus (correct)
- Endoplasmic reticulum
- Golgi apparatus
What is the shape of mature mammalian RBCs?
What is the shape of mature mammalian RBCs?
- Cuboidal
- Biconcave and disc-shaped (correct)
- Spherical
- Irregular and jagged
What unifying themes tie together the field of biology?
What unifying themes tie together the field of biology?
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What is the significance of evolution in biology?
What is the significance of evolution in biology?
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What allows organisms to move, grow, and reproduce?
What allows organisms to move, grow, and reproduce?
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At what levels of organization do biologists study life?
At what levels of organization do biologists study life?
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What do biologists use to make observations and pose questions?
What do biologists use to make observations and pose questions?
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