Me and dont guess
question 1
does the following statement describe a function of dna, a function of rna, a function of both dna and rna, or a function of neither dna nor rna? it makes up a main part of the ribosome, where amino acids are attached to one another to make a protein.
dna
rna
both dna and rna
neither dna nor rna
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question 2
which of these are the correct base pairs in dna?
adenine and guanine
cytosine and thymine
cytosine and guanine
adenine and uracil
adenine and thymine
cytosine and guanine
adenine and uracil
thymine and cytosine
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question 3
for the following structural characteristic, decide if it is a characteristic of dna, a characteristic of rna, a characteristic of both dna and rna, or a characteristic of neither dna nor rna. it contains uracil as a base.
dna
rna
both dna and rna
neither dna nor rna
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question 4
the process of forming two dna molecules from one is called
replication
transcription
translation
expression
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question 5
what happens before the replication fork can be formed?
base pairs are added.
the double helix is unwound.
dna polymerase attaches.
mutations are corrected.
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question 6
what enzyme is responsible for adding the complementary base pairs during replication?
dna polymerase
rna polymerase
dna ligase
rna ligase
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question 7
if two molecules of dna formed during replication are different, what has happened?
perfect replication
transcription
translation
mutation
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question 8
how do mutations affect the products of dna replication?
they make identical strands.
they make different strands
they make rna.
they do not affect the products.
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question 9
mutations are avoided during replication because dna polymerase is able to
repair itself
repair the dna
encode a message
add more codes
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question 10
if there is no lactose present, how does bacteria respond?
the gene for beta-galactosidase turns on.
the gene for beta-galactosidase turns off.
lactose is produced.
beta-galactosidase production increases.
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question 11
what is the function of the alpha-globin gene found on chromosome 16 of humans?
codes for 1 of the 2 types of subunits from which hemoglobin is made
codes for an enzyme that causes cells to form a globular mass to clot blood
codes for a carbohydrate that is carried in the blood to give the cells of the body energy
codes for a lipid that balls up in water because it does not mix well with water
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question 12
what is an exon?
a part of dna that codes for a functional protein
a part of dna that does not code for a functional protein
the beginning part of the dna molecule
the end of part of the dna molecule
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question 13
which of these statements is true?
rna codes for dna which codes for proteins.
dna codes for proteins which codes for rna.
dna codes for rna which codes for proteins.
rna codes for proteins which code for dna.
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question 14
what type of rna brings amino acids to be attached in sequence according to the information carried in a different type of rna?
transfer rna
ribosomal rna
messenger rna
nuclear rna