WorksheetsProteins and Enzymes
Total questions: 21
Worksheet time: 55mins
The building blocks of proteins are
nucleotides
monosaccharides
lipids
amino acids
A catalyst is a chemical that
blocks a chemical reaction from occurring
slows down a chemical reaction
speeds up the rate of a chemical reaction
has no effect on a chemical reaction
An example of a catalyst is a(an)
hormone
monosaccharide
enzyme
lipid
A denatured protein is one...
(Check all that apply)
whose shape has changed due to the effects of temperature or pH
which is broken down into its building blocks
which may no longer function
which is combined with other proteins to make a peptide
The active site of an enzyme is the region that...
(Check all that apply)
changes after the chemical reaction is completed
can bind to any substrate
binds to a specific substrate
may change due to denaturing
Object C in this image is know as the
enzyme
substrate
enzyme-substrate complex
product
One enzyme molecule can catalyze many substrate molecules because
more enzyme molecules are created during the reaction
the enzyme molecule is not used up during the reaction
the enzyme breaks apart and then reforms after the reaction
none of the above
Catalase helps break down hydrogen peroxide (H2O2) into water and oxygen. What is the substrate in this reaction?
catalase
hydrogen peroxide
water
oxygen
Click on the true statement about this reaction.
"A" represents the products, "C" is the enzyme and "E" is the substrate.
"A" represents the substrate, "C" is the enzyme and "E" are the products.
"A" represents the substrate, "C" is the enzyme-substrate complex, and "E" are the products.
"B" represents the substrate, "A" represents the enzyme and "D" is the product.
LCT is the gene that codes for
making the sugar lactose
making all digestive enzymes
making the enzyme lactase
the control of lactase production
In order for Control Regions 1 and 2 to activate the LCT gene
the control regions must have opposite electrical charges ( + and -)
the control regions must physically attach to each other
the control regions must be enzymes
the control regions must be able to produce the sugar lactose
Lactase breaks lactose down into
two separate molecules of glucose
glucose and dextrose
glucose and galactose
glucose and fructose
The "L" allele allows for the digestion of lactose.
The "L" allele increased in the agricultural population because
they followed wild animals for their meat.
milk was no longer in their diet.
milk was now a part of their diet.
they foraged for plant foods.
Having milk in the diet was an example of
a characteristic of a nomadic population.
a recessive trait
environmental pressure
a dominant trait
The attachment of methyl groups to Control Regions 1 and 2...
(Check all that apply)
prevents the activation of the LCT gene
activates the LCT gene
allows the control regions to attach more easily
prevents the physical attachment of the control regions
Organize these statements into the correct categories
the ability to digest lactose
associated with the "L" allele
inability to digest lactose
associated with the " l " allele
must physically attach to activate the LCT gene
can be affected by methylation (attachment of methyl groups)
codes for the production of lactase
can be turned on or off
can turn the LCT gene on or off
caused by a mutation in a control region that controls LCT activation
A key difference between nomadic and agricultural populations is that...
the nomadic population settled in one place and began to grow crops.
the agricultural population roamed around, following migrating herds.
the agricultural populations had milk in their diet.
the nomadic population had milk in their diet.
Click on the region of the diagram that contains the code for making lactase.
Click on the regions of the diagram that regulate (control) the LCT gene.
Click on the regions of the diagram that represent the "non-coding" regions.
Click on the region of the diagram that represent the "coding" region.
