Revision notes topic questions past papers


α-helix β-pleated sheet



Download 5,11 Mb.
Pdf ko'rish
bet34/54
Sana31.12.2021
Hajmi5,11 Mb.
#217709
1   ...   30   31   32   33   34   35   36   37   ...   54
Bog'liq
CIE AS Biology (9700) 2019-2021 CIE AS Biology (9700) 2019-2021 2.1.1 Biological Molecule Tests SaveMyExams

α-helix

β-pleated sheet

The α-helix shape occurs when the hydrogen bonds form between every fourth peptide

bond (between the oxygen of the carboxyl group and the hydrogen of the amine group)

The β-pleated sheet shape forms when the protein folds so that two parts of the



polypeptide chain are parallel to each other enabling hydrogen bonds to form between

parallel peptide bonds

Most fibrous proteins have secondary structures (e.g. collagen and keratin)

The secondary structure only relates to hydrogen bonds forming between the amino



group and the carboxyl group (the ‘protein backbone’)

The hydrogen bonds can be broken by high temperatures and pH changes




CIE AS Biology (9700) 2019-2021 Revision Notes

savemyexams.co.uk

2. Biological Molecules

YOUR NOTES

© 2015-2021 Save My Exams Ltd




Download 5,11 Mb.

Do'stlaringiz bilan baham:
1   ...   30   31   32   33   34   35   36   37   ...   54




Ma'lumotlar bazasi mualliflik huquqi bilan himoyalangan ©hozir.org 2024
ma'muriyatiga murojaat qiling

kiriting | ro'yxatdan o'tish
    Bosh sahifa
юртда тантана
Боғда битган
Бугун юртда
Эшитганлар жилманглар
Эшитмадим деманглар
битган бодомлар
Yangiariq tumani
qitish marakazi
Raqamli texnologiyalar
ilishida muhokamadan
tasdiqqa tavsiya
tavsiya etilgan
iqtisodiyot kafedrasi
steiermarkischen landesregierung
asarlaringizni yuboring
o'zingizning asarlaringizni
Iltimos faqat
faqat o'zingizning
steierm rkischen
landesregierung fachabteilung
rkischen landesregierung
hamshira loyihasi
loyihasi mavsum
faolyatining oqibatlari
asosiy adabiyotlar
fakulteti ahborot
ahborot havfsizligi
havfsizligi kafedrasi
fanidan bo’yicha
fakulteti iqtisodiyot
boshqaruv fakulteti
chiqarishda boshqaruv
ishlab chiqarishda
iqtisodiyot fakultet
multiservis tarmoqlari
fanidan asosiy
Uzbek fanidan
mavzulari potok
asosidagi multiservis
'aliyyil a'ziym
billahil 'aliyyil
illaa billahil
quvvata illaa
falah' deganida
Kompyuter savodxonligi
bo’yicha mustaqil
'alal falah'
Hayya 'alal
'alas soloh
Hayya 'alas
mavsum boyicha


yuklab olish