Organic Molecules and Indicators

Match the following

• made of glycerol and fatty acids

• organic molecule

• contains carbon and hydrogen

• carbohydrates

• made of sugars

• nucleic acids

• made of amino acids

• proteins

• made of nucleotides

• lipids

Answer explanation

The matching should be as follows:

proteins - made of amino acids

carbohydrates - made of sugars

lipids made of fatty acids and glycerol

nucleic acids made of nucleotides

organic molecule - contains carbon and hydrogen

Tags

NGSS.HS-LS1-1

Identify the macromolecule associated with this image.

• Protein

• Carbohydrate

• Lipid

• Nucleic Acid

Tags

NGSS.MS-LS1-7

What type of food molecule is shown here? Explain how you know it is that type of molecule.

Answer explanation

polysaccharide or complex carbohydrate because it is a chain of hexagons

Tags

NGSS.MS-LS2-3

The element _______is found in all of the organic compounds.

• Iron
• Nitrogen
• Carbon
• Oxygen

Tags

NGSS.HS-LS1-6

Sugars, starches and chitin are examples of

• Carbohydrates
• Lipids
• Proteins
• Nucleic Acids

What is a substance that gives a visible sign, usually by a color change, of the presence or absence of a specific molecule or compound?

• standard

• indicator

• catalyst

• reactant

• product

Which indicator changes from brown to black in the presence of starch?

• Biuret

• Benedict

• Sudan IV

• Iodine

A student tested a substance with Benedict's solution and determined glucose was not present in the substance. Circle the result the student most likely saw.

Answer explanation

The blue test tube should be circled.

Tags

NGSS.MS-PS1-2

A student tests a substance with protein indicator. The indicator turned from blue to purple which is a positive result. This means that __________ was present in the substance.

Answer explanation

protein indicator will only turn colors in the presence of protein

Which solution(s) shows a positive test for glucose (monosaccharide)?

• A
• B
• C
• D

Answer explanation

glucose indicator turns red, orange, yellow or green in the presence of glucose

Tags

NGSS.MS-PS1-2