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WorksheetsBiochemistry
Total questions: 10
Worksheet time: 10mins
A solution with a pH of 2 is __________ times more acidic than one with a pH of 5.
3
10
100
1000
100000
All of the following are correct about enzymes EXCEPT
the mechanism by which enzymes work is known as lock and key
they are proteins
they denature at high temperatures
they are assisted by vitamins and minerals
enzymes are not degraded during a reaction
Which of the following is NOT a carbohydrate?
Glucose
Lactose
Insulin
Starch
Sucrose
Which of the following is correctly matched?
Proteins-nucleotides
Lipids-glycerol
Carbohydrates-amino acids
DNA-glucose
None of the above
Isotopes differ from each other only in
the number of electrons
the number of protons
the number of neutrons
how they react chemically
the size of the atom
A polysaccharide found in plants whose function is storage is
starch
glycogen
chitin
glucagon
cellulose
The radioisotope 1-131 is used to diagnose and treat diseases of the
brain
thyroid
pancreas
lungs
stomach
The pH of blood in humans
is lowest at birth and gradually increases with age up to a maximum level
is different for men and women
varies with the activity level of the individual
is highest at birth and gradually decreases to a minimum level
is normally 7.4 and resists change at all times
Water moves up tall trees because this is true
Water exhibits strong tension and cohesion
Water has a high heat of vaporization
Water has a high specific heat
Ice is less dense than water
Water is a universal solvent
Enzymes function because of their particular shape of conformation. Which level of protein structure most directly responsible for the shape of a protein?
Primary
Secondary
Tertiary
Quaternary
Cannot be determined
