Grade 9 Biology: Paper 1

Which statement about biological molecules is correct?

• DNA is made up of nucleic acids.

• Glycogen is made from glycerol molecules.

• Oils are made from amino acids and glucose.

• Proteins are made from fatty acids.

The elements _______ are found in all of organic compounds.

• carbon and nitrogen

• carbon and oxygen

• carbon and iron

• carbon and hyrogen

Which element is found in proteins but not carbohydrates?

• carbon

• hydrogen

• nitrogen

• oxygen

What are two main functions of fats within the body?

• energy storage and cellular transport
• energy storage and insulation
• building blocks for DNA and hormones
• storing cellular information and in the cell membrane

Tags

NGSS.MS-LS1-7

The diagram shows part of a protein molecule.

What does X represent?

• amino acid

• fatty acid

• glycerol

• sugar

Which of the following can proteins do?

• store genetic information

• store energy (long-term)

• store energy (short-term)

• build skin, hair, nails, muscles

What is the main protein in hair called?

• keratin

• albumin

• histone

• collagen

What do you call the biological molecules that are responsible for the transmission of genetic information and heredity?

• Carbohydrates

• Lipids

• Proteins

• Nucleic Acids

What is the function of carbohydrates?

• store genetic information
• store energy (long-term)
• store energy (short-term)
• build skin, hair, nails, muscles

Tags

NGSS.MS-LS1-7

Which row shows the elements and basic units that are used in the construction of large food molecules?

• A

• B

• C

• D