Proteins polysaccharides and lipids

Question 1

How many residues per helix turn are there in alpha helixes?

Answer 1

3.6

Question 2

What type of bonds are in alpha helix structures?

Answer 2

H-bonds

Question 3

What are examples of alpha helix structures?

Answer 3

Haemoglobin, myoglobin, myosin, keratins

Question 4

What shape are beta pleated sheets?

Answer 4

Zig zags

Question 5

What type of bonding occurs in beta pleated sheets?

Answer 5

H bonding

Question 6

Where are beta pleated sheets found usually?

Answer 6

found in proteins where flexibilty is needed

Question 7

In what tissue ONLY in the body is the triple helix found?

Answer 7

Collagen

Question 8

Is the triple helix water soluble?

Answer 8

NO

Question 9

How many amino acids are there per chain of triple helix?

Answer 9

1000

Question 10

What three amino acids make up collagen?

Answer 10

Glycine, proline and hydroxyproline

Question 11

What 2 repetitions of hydroxyproline, proline and glycine can collagen have?

Answer 11

X-pro-gly OR X-hyp-gly

Question 12

Are fibrous proteins water soluble?

Answer 12

NO

Question 13

What shape are globular proteins?

Answer 13

Spherical

Question 14

Are globular proteins water soluble?

Answer 14

YES

Question 15

What structures do globular proteins usually have?

Answer 15

3 or 4prime

Question 16

What globular structure does actin have?

Answer 16

3 prime

Question 17

What structure does haemoglobin have?

Answer 17

4 prime

Question 18

What is the function of myoglobin?

Answer 18

Oxygen storage in muscle

Question 19

What structure is myoglobin?

Answer 19

3 prime

Question 20

What residues make myoglobin water soluble?

Answer 20

2 polar -Histidine residues

Question 21

How is iron attached to the haem group in myoglobin?

Answer 21

The histidine residue

Question 22

What type of structure makes up 75% of myoglobin?

Answer 22

Alpha helix

Question 23

Is the haem group in myoglobin kept in the hydrophillic or hydrophobic segment?

Answer 23

Hydrophobic

Question 24

What molecule is this?

Answer 24

Myoglobin

Question 25

How many haem groups does myoglobin have?

Answer 25

1

Question 26

What is the function of haemoglobin?

Answer 26

Oxygen transport

Question 27

What two structures make up haemoglobin?

Answer 27

2 alpha chains 2 beta chains

Question 28

How many haem groups does haemoglobin have?

Answer 28

4

Question 29

How many oxygen atoms can haemoglobin bind?

Answer 29

8

Question 30

How many oxygen molecules can haemoglobin bind?

Answer 30

4

Question 31

What molecule is this?

Answer 31

Haemoglobin

Question 32

What structure is this? What molecule is this most likely to be?

Answer 32

Collagen - triple helix

Question 33

What structure is this? What molecules could have chains with this structure?

Answer 33

Alpha helix - DNA, haemoglobin

Question 34

What type of diffusion do carrier proteins encourage?

Answer 34

Facilitated

Question 35

Can messenger proteins alter the permeability of cell membranes?

Answer 35

YES

Question 36

Where is human growth hormone released from?

Answer 36

Anterior pituitary

Question 37

What are the monomers of polysaccharides?

Answer 37

monosaccharide - sugar

Question 38

What are two examples of polysaccharides?

Answer 38

Glycogen and starch

Question 39

What are the components of lipids?

Answer 39

2 Fatty acids Phosphate Glycerol

Question 40

What is an example of a hexose sugar (ketose)?

Answer 40

Fructose

Question 41

How many carbons does glucose have?

Answer 41

6 - hexose

Question 42

Is glucose an aldose or a ketose?

Answer 42

Aldose

Question 43

What is the aldehyde functional group?

Answer 43

-CHO

Question 44

What is the ketone functional group?

Answer 44

-CO

Question 45

What type of bonds does starch have that amylase breaks down?

Answer 45

1-4 glycosidic

Question 46

What two monosaccharides is starch made from?

Answer 46

Amylose and amylopectin

Question 47

What type of linkage does amylopectin have before and after its branch point?

Answer 47

Amylopectin has 1-4 glycosidic before and 1-6 glycosidic after

Question 48

What type of bonds does cellulose have?

Answer 48

BETA !!!!! 1-4 links

Question 49

What are the monomers of proteins?

Answer 49

Amino acids

Question 50

What two monomers make lactose?

Answer 50

Galactose and glucose

Question 51

What two monomers make sucrose?

Answer 51

glucose and fructose

Question 52

What two monomers make maltose?

Answer 52

2 glucose

Question 53

What monomer makes cellulose with what linkage?

Answer 53

Glucose with Beta 1-4

Question 54

What are lipids based on?

Answer 54

Glycerol

Question 55

What is the name of the major lipid that makes up membranes?

Answer 55

Phosphatidylcholine

Question 56

What is the function of triglycerides?

Answer 56

Storage

Question 57

Is the head or tail of a phosphatidilcholine hydrophobic?

Answer 57

Tail

Question 58

What is an example of a sterol?

Answer 58

Cholesterol