CHEM210 / CHEM 210 Module 4
(Latest Update )
Biochemistry | Questions & Answers
| Grade A | 100% Correct - Portage
Learning
Carbohydrates
Question:
What is the penultimate carbon?
Answer:
second to last carbon
Question:
How do the physical and chemical properties of L and D sugar differ?
Answer:
they are the very similar since their molecules are very similar
,Question:
Why is glucose often called dextrose?
Answer:
because its most often always found in the D orientation
Question:
which orientation is more found in nature, L or D? why?
Answer:
D- because the enzymes/active sites that make enzymes are made to make D
orientation
Question:
What are epimers?
Answer:
two sugars that differ by only 1 carbon orientation
Question:
What are the structure/projects called that represent ring sugars?
Answer:
hawroth projections
, Question:
What are the two type of ring that can occur in sugars?
Answer:
1. furanose- 5 member ring (4 carbon+ 1 O- heterocyclic ring)
2. pyranose - 6 membered ring (5 carbon+ 1 O)
Question:
Do we see more pyranose or furanose rings in sugars?
Answer:
pyranose
Question:
Explain how the cyclic ring structure form from the straight sugar?
Answer:
the OH on the penultimate carbon/ or the one above has a lone pair of
electrons, it will attack the partial positive carbon 1 and form a ring
(Latest Update )
Biochemistry | Questions & Answers
| Grade A | 100% Correct - Portage
Learning
Carbohydrates
Question:
What is the penultimate carbon?
Answer:
second to last carbon
Question:
How do the physical and chemical properties of L and D sugar differ?
Answer:
they are the very similar since their molecules are very similar
,Question:
Why is glucose often called dextrose?
Answer:
because its most often always found in the D orientation
Question:
which orientation is more found in nature, L or D? why?
Answer:
D- because the enzymes/active sites that make enzymes are made to make D
orientation
Question:
What are epimers?
Answer:
two sugars that differ by only 1 carbon orientation
Question:
What are the structure/projects called that represent ring sugars?
Answer:
hawroth projections
, Question:
What are the two type of ring that can occur in sugars?
Answer:
1. furanose- 5 member ring (4 carbon+ 1 O- heterocyclic ring)
2. pyranose - 6 membered ring (5 carbon+ 1 O)
Question:
Do we see more pyranose or furanose rings in sugars?
Answer:
pyranose
Question:
Explain how the cyclic ring structure form from the straight sugar?
Answer:
the OH on the penultimate carbon/ or the one above has a lone pair of
electrons, it will attack the partial positive carbon 1 and form a ring
