d) Describe what is meant by the primary structure of a protein? e) At the secondary level of structure, protein molecules will fold in either of two ways. • What are these two secondary forms of folding called? • What do these two forms look like structurally? • How is their structural arrangement stabilised? f) Describe the tertiary structure of a protein. g) Describe the biological function of the peptide hormone insulin. h) Haemoglobin is an example of a quaternary protein. Briefly describe the structure of this protein and state its biological function. Part 2 Monosaccharides and disaccharides are two of the sub-classes of Carbohydrates. Structure B shown below is a specific example of a monosaccharide. Structure B CH₂OH
d) Describe what is meant by the primary structure of a protein? e) At the secondary level of structure, protein molecules will fold in either of two ways. • What are these two secondary forms of folding called? • What do these two forms look like structurally? • How is their structural arrangement stabilised? f) Describe the tertiary structure of a protein. g) Describe the biological function of the peptide hormone insulin. h) Haemoglobin is an example of a quaternary protein. Briefly describe the structure of this protein and state its biological function. Part 2 Monosaccharides and disaccharides are two of the sub-classes of Carbohydrates. Structure B shown below is a specific example of a monosaccharide. Structure B CH₂OH
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
Question
Transcribed Image Text:d) Describe what is meant by the primary structure of a protein?
e) At the secondary level of structure, protein molecules will fold in
either of two ways.
• What are these two secondary forms of folding called?
• What do these two forms look like structurally?
• How is their structural arrangement stabilised?
f) Describe the tertiary structure of a protein.
g) Describe the biological function of the peptide hormone insulin.
h) Haemoglobin is an example of a quaternary protein. Briefly
describe the structure of this protein and state its biological
function.
Part 2
Monosaccharides and disaccharides are two of the sub-classes of
Carbohydrates. Structure B shown below is a specific example of a
monosaccharide.
H
HO
Structure B
CH₂OH
H
OH
H
OH
H
OH
a) Name Structure B and describe its function within cells.
b) State the name of a disaccharide that contains this molecule
(Structure B) and describe its structure.
c) A branched polysaccharide made up of many monomers of
Structure B bonded together is commonly a key component of cell
surface membranes when attached to either a phospholipid or a
protein.
What is the name given to such a polysaccharide when it is
attached to a protein in the cell membrane, and what is the
function of this polysaccharide?
d) State the name of the pentose sugar that is a key component of a
messenger RNA (mRNA) nucleotide.
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