Question

gly-ala-ser
it is a lipid.
all of its monomers are polar.
extremes in temperature can cause it to denature.
all of its monomers are non polar.

Explanation:

1. Analyze the structure: Gly - Ala - Ser is a tripeptide (protein/peptide, made of amino acids).

• Lipids are not peptides, so "IT IS A LIPID" is wrong.
• Amino acid monomers: Glycine (Gly) has a non - polar R - group (H), Alanine (Ala) has a non - polar R - group ($-CH_3$), Serine (Ser) has a polar R - group ($-CH_2OH$). So "ALL OF IT'S MONOMERS ARE POLAR" and "ALL OF IT'S MONOMERS ARE NON POLAR" are wrong.
• Proteins (peptides) can denature at extreme temperatures, which disrupts their structure. So "EXTREMES IN TEMPERATURE CAN CAUSE IT TO DENATURE" is correct.

Answer:

EXTREMES IN TEMPERATURE CAN CAUSE IT TO DENATURE.