2.1 IB Biomolecule Identification

This is .....

• a nucleic acid

• an amino acid

• a lipid - steroid

• a carbohydrate

• a lipid - fatty acid

Answer explanation

Nitrogen - check

Phosphate group - check
Three parts to the molecule - check
Must be a NUCLEIC ACID!

Tags

NGSS.HS-LS1-6

This is .....

• an amino acid

• a lipid - fatty acid

• a carbohydrate

• a nucleic acid

• a lipid - steroid

Answer explanation

Nitrogen - check

Phosphate group - nope

Amino group (NH₂) - check

Carboxyl group - check

R group from middle carbon - check

Must be an AMINO ACID!

Tags

NGSS.HS-LS1-6

These are .....

• amino acids

• lipids - fatty acids

• carbohydrates

• nucleic acids

• lipids - steroids

Answer explanation

Nitrogen - nope

Long hydrocarbon chain - check

Minimal oxygen (one -OH group per chain) - check

Must be a LIPID - FATTY ACID!

This is ....

• a nucleic acid

• a lipid - steroid

• a carbohydrate

• an amino acid

• a lipid - fatty acid

Answer explanation

Nitrogen - nope

Long hydrocarbon chain - nope

Lots of oxygen (lots of -OH groups) - check

Must be a CARBOHYDRATE!

Tags

NGSS.HS-LS1-6

Amino acids are recognizable because they consist of .....

• a central carbon connected to an amine group (NH₂) and an opposing carboxyl group (COOH), with a variable group (denoted ‘R’) making each type unique
• 3 components – a pentose sugar, a phosphate group and a nitrogenous base
• a long chain of hydrocarbons that may or may not contain double bonds, and have a carboxyl group on the end
• primarily of C, H & O atoms in a common ratio –  Cn(H₂O)n

Tags

NGSS.HS-LS1-6

Nucleic acids are recognizable because they consist of .....

• a central carbon connected to an amine group (NH₂) and an opposing carboxyl group (COOH), with a variable group (denoted ‘R’) making each type unique
• 3 components – a pentose sugar, a phosphate group and a nitrogenous base
• a long chain of hydrocarbons that may or may not contain double bonds, and have a carboxyl group on the end
• primarily of C, H & O atoms in a common ratio –  Cn(H₂O)n

Carbohydrates are recognizable because they consist of .....

• a central carbon connected to an amine group (NH₂) and an opposing carboxyl group (COOH), with a variable group (denoted ‘R’) making each type unique
• 3 components – a pentose sugar, a phosphate group and a nitrogenous base
• a long chain of hydrocarbons that may or may not contain double bonds, and have a carboxyl group on the end
• primarily of C, H & O atoms in a common ratio –  Cn(H₂O)n

Lipids are recognizable because they consist of .....

• a central carbon connected to an amine group (NH₂) and an opposing carboxyl group (COOH), with a variable group (denoted ‘R’) making each type unique
• 3 components – a pentose sugar, a phosphate group and a nitrogenous base
• a long chain of hydrocarbons that may or may not contain double bonds, and have a carboxyl group on the end
• primarily of C, H & O atoms in a common ratio –  Cn(H₂O)n

Which biomolecule is this a picture of?

• Amino Acid

• Nucleic Acid

• Lipid - fatty acid

• Carbohydrate

• Lipid - steroid

Answer explanation

Nitrogen - check

Phosphate group - nope

Amino group (NH₂) - check

Carboxyl group - check

R group from middle carbon - check

Must be an AMINO ACID!

Tags

NGSS.HS-LS1-6

Which biomolecule is this a picture of?

• Protein

• Nucleic Acid

• Lipid - fatty acid

• Carbohydrate

• Lipid - steroid

Answer explanation

Nitrogen - check

Phosphate group - check

Three parts to the molecule - check

Must be a NUCLEIC ACID!