Worksheetspq 3 - carbohydrates
Total questions: 50
Worksheet time: 43mins
Monosaccharides are monomers of
Lipids
Nucleic Acids
Proteins
Carbohydrates
Lactose is composed of
glucose + fructose
glucose + glucose
glucose + sucrose
glucose + galactose
What is the polysaccharide used by animals to store glucose?
glycogen
fructose
starch
cellulose
What makes up the disaccharide sucrose?
glucose + glucose
glucose + fructose
glucose + galactose
glucose + maltose
Lactose (Milk Sugar)
Maltose (Grain sugar)
are examples of
How are sugars formed in nature?
Photosynthesis
Cellular respiration
Hydrolysis
Dehydration
What would be the classification of a monosaccharide made up of 5 carbons?
Triose
Tetrose
Pentose
Hexose
Which reaction is needed to join two monosaccharides?
Hydration
Dehydration
Dehydrogenation
Hydrolysis
Which carbohydrate do we store in our liver and serves as an energy reserve?
Starch
Glycogen
Glucose
Cellulose
Why carbohydrates are important to living organisms?
What is the chemical formula for monosaccharides?
CH2O
C6H12O6
C4H3O2
CHO
What are disaccharides?
two monosaccharides bonded together
two disaccharides bonded together
one sugar molecule
all answers are correct
What is the process called when one molecule of water is ripped off to make a disaccharide?
hydrolysis
glycosidic bond
dehydration reaction
rehydration reaction
It refers to the energy storage in plants.
cellulose
starch
glycogen
chitin
A type of covalent bond that joins a carbohydrate molecule to another group, which may or may not be a carbohydrate.
Ionic Bond
Glycosidic linkage
Hydrolysis
Polar covalent bond
Table sugar
Glucose
Fructose
Galactose
Sucrose
Another structural polysaccharide that is found in the exoskeleton of arthropods.
Glycogen
Cellulose
Chitin
Starch
What is the process called when one disaccharide has a molecule of water added to it and creates two separate monosaccharides?
Dehydration reaction
Hydrolysis
Glycosidic bond
Covalent bond
glucose + galactose
Lactose
Maltose
Sucrose
Fructose
What are the three familiar monosaccharides that are considered as hexoses?
Glucose, Galactose, Fructose
Glucose, Ribose, Ribulose
Glucose, Ribulose, Fructose
Glucose, Maltose, Sucrose
Check all the correct sugar units in Disaccharides
Sucrose: Fructose + Fructose
Maltose: Glucose + Glucose
Sucrose: Fructose + Glucose
Lactose: Galactose + Glucose
Also known as table sugar
Fructose
Lactose
Sucrose
Maltose
Storage form of glucose in the body
Fructose
Maltose
Lactose
Glycogen
CHO digestion starts in the mouth through (a) ( what enzyme?)
Hormone produced from alpha cells of the Islets of Langerhans in the pancreas.
Insulin
Glucagon
Incretins
Thyroxine
Fasting blood sugar sample should be obtained after how many hours of fasting?
9 - 10 hours
10 to 12 hours
5 - 10 hours
8 - 10 hours
Serum should be separated from cells within how many hours/minutes?
30 to 60 minutes
30 to 60 hours
10 - 15 minutes
3 - 5 hours
The Principle is the reduction of cupric ions forming cuprous oxide in hot alkaline solution of glucose with the use of Arsenomolybdate reagent.
Folin Wu
Neocuproine
Hagedorn Jensen method
Nelson Somogyi
Positive result is PHOSPHOMOLYBDENUM BLUE measured at 520 nm.
Folin Wu
Nelson Somogyi
Hagedorn Jensen Method
Neocuproine
Enzymatic Glucose Oxidase method that measures oxygen depletion through electrodes.
Colorimetric Method
Hexokinase Method
Gas Chromatography
Polarographic Method
Test for fructose that uses hot HCl and resorcinol for reagent with a positive result of red within 30 seconds.
Folin Wu
Selivanoff's Test
Hexokinase
Bial's Test
NORMAL FBS VALUE ( with units)
(a)
Type of OGTT that uses 100g/650 mL of water. First half is given after the FBS is taken. 2nd dose is given after collection of 30 minute sample.
Exton Rose Method (Double Dose)
Janney-Isaacson Method (Single Dose)
Intravenous GTT
HBA1c
Test for long term glucose control for the previous 2 to 3 months (18 to 20 weeks in some). Patient with shorter RBC lifespan obtains a lower result.
Janney-Isaacson Method
Exton Rose Method
Intravenous GTT
HBA1c
FBS initially, the patient is given CHO load usually 75g and plasma glucose is measured after 2 hours.
RBS
OGTT
2 - HOURS POST PRANDIAL GLUCOSE
FBS
Which of the following statements concerning the abundance of carbohydrates is incorrect?
They are the most abundant type of bioorganic molecule in the human body.
They are the most abundant type of bioorganic molecule in the plant world.
They are the most abundant type of bioorganic molecule on planet Earth.
Which of the following is not a function for carbohydrates in the human body?
They are a structural component of DNA and RNA molecules.
They serve as a source of energy.
They are a structural component of cell membranes.
no correct response
A carbohydrate is a polyhydroxy aldehyde, a polyhydroxy ketone, or a compound
that yields polyhydroxy aldehydes or polyhydroxy ketones upon hydrolysis. The
carbohydrate glucose is a _______________, and the carbohydrate fructose is a
__________________.
Polyhydroxy ketone and Polyhydroxy aldehyde
Polyhydroxy aldehyde and Polyhydroxy ketone
Both Polyhydroxy aldehyde
Both Polyhydroxy ketone
Which of the following functional groups is always present in a carbohydrate molecule?
hydroxyl
aldehyde
ketone
none of the above
Which of the following statements concerning monosaccharides is incorrect?
They cannot be broken down into simpler units by hydrolysis.
They contain both an aldehyde and ketone functional group.
They are either polyhydroxy aldehydes or polyhydroxy ketones.
no correct response
Which of the following is not a possible value for the number of monosaccharide units
in an oligosaccharide?
12
8
5
6
The complete hydrolysis of a polysaccharide produces many
disaccharides
monosaccharides
disaccharides
The structure of d-galactose differs from that of d-glucose at
Carbon 1 and Carbon 2
Carbon 5
Carbon 2
No correct response
In which of the following pairs of monosaccharides do the members of the pair contain
different numbers of carbon atoms?
glucose and galactose
glyceraldehyde and dihydroxyacetone
fructose and ribose
