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Questions and Answers
Which of the following biomolecules has a carbonyl group?
Which of the following biomolecules has a carbonyl group?
- Carboxylic acid
- Alcohol
- Amine
- Aldehyde (correct)
What is a characteristic of carbon atoms that is of great significance in biology?
What is a characteristic of carbon atoms that is of great significance in biology?
- Their ability to form double bonds with oxygen atoms
- Their ability to form triple bonds with nitrogen atoms
- Their ability to form single bonds with hydrogen atoms only
- Their ability to form very stable single bonds with up to four other carbon atoms (correct)
What is the percentage of total mass of most cells that is made up by the four most abundant elements in living organisms?
What is the percentage of total mass of most cells that is made up by the four most abundant elements in living organisms?
- Less than 95%
- Around 90%
- Exactly 98%
- More than 99% (correct)
What is the primary element that the chemistry of living things is organized around?
What is the primary element that the chemistry of living things is organized around?
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What is a characteristic of many biomolecules?
What is a characteristic of many biomolecules?
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What is the approximate angle between any two bonds in a carbon atom?
What is the approximate angle between any two bonds in a carbon atom?
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What is the average bond length of a single carbon bond?
What is the average bond length of a single carbon bond?
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What is a characteristic of a double bond in carbon atoms?
What is a characteristic of a double bond in carbon atoms?
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What is unique about carbon's ability to form molecules?
What is unique about carbon's ability to form molecules?
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What is a possible reason why carbon compounds were selected for the molecular machinery of cells?
What is a possible reason why carbon compounds were selected for the molecular machinery of cells?
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