« Reply #13628 on: July 23, 2021, 11:30:54 am »
+2
Hydrogen bonds can break at high temperatures. Which of the following macromolecules is likely to break apart or change shape at high temperatures?
A) DNA
B) RNA
C) Triglycerides
D) Proteins
E) Polysaccharides
Would this be both DNA and rna
It will be DNA and proteins. RNA is single stranded so it won’t really break apart under high temperatures, they’re held together by covalent phosphodiester bonds which are stronger than H-bonds (remember intramolecular forces are a lot stronger than intermolecular forces). DNA unzips at 92°C because the H-bonds between the base pairs are distrupted and proteins also denature at temperatures above their optimal temperature since H-bonds that make up their 2° and 3° structures are distrupted
« Last Edit: July 23, 2021, 11:57:13 am by Billuminati »
Logged
VCE 2016-2018
2017: Biology [38], Further Maths [44]
2018: Methods [37], French [38], Chem [40], English [44]
UMAT: 56/43/80, 57th percentile (LLLLOOOOOOOOOLLLLLLLL)
ATAR: 98.1
2019-2021: Bachelor of Biomedical Science at Monash (Scholars), minoring in Chemistry
GAMSAT September 2021: 65/67/86, 76 overall (98th percentile)
2022: Chilling
2023+: Transfer to teaching degree