7.) What statement is false?
Every cell uses all the DNA it contains continually in protein synthesis.
The transcription of much of the cell’s DNA is restricted most of the time.
The human genome estimates a range of 30,000 to 40,000 genes.
Such things as the environment and maturity of an organism will help determine what genes are being transcribed.
Some genes are never transcribed in certain cells.
8.) Changes in the sequence of bases in DNA is called mutations. How do these changes take place?
A mistake is made in the pairing of sugars.
The bonding of base pairs is too rapid for the proofreading enzymes to keep up.
There is not any DNA polymerase present in the cell.
There is not enough ultraviolet light present.
A mistake is made in base pairing during replication.
9.) Which of the following statements concerning DNA electrophoresis is correct?
Longer DNA fragments migrate farther than shorter fragments.
Migration distance is inversely proportional to the fragment size.
Positively charged DNA migrates more rapidly than negatively charged DNA.
Uncut DNA migrates farther than DNA cut with restriction enzymes.
All of the above
10.) What is DNA polymerase?
an enzyme involved in making RNA
a peptide base included in both RNA and DNA
an enzyme involved in DNA replication
a proofreading enzyme on DNA molecules
an enzyme that breaks down DNA at the end of the cell’s life.
11.) The effects of a mutation
are the same no matter what cell they occur in.
are usually for the good of the animal.
have the greatest potential of change for the future in cells destined to be gametes.
caused by deletion and insertion on a gene is very slight.
in gametes is not passed on to the next generation of organisms.
12.) Mutations
are the basis for genetic variation in organisms over time according to the theory of evolution.
are usually harmless to the organism.
of a single gene are the cause of a large number of diseases in both humans and other organisms.
called translocation cause both sickle-cell anemia and cystic fibrosis.
taking place in parent gametes are more likely to be passed by the male.
13.) A restriction enzyme acts on the following DNA segment by cutting both strands between adjacent thymine and cytosine nucleotides ...............TCGCGA......................
.. ...............AGCGCT........................ Which of the following pairs of sequences indicates the sticky ends that are formed?
...GCGC CGCG...
...TCGC TCGC...
...T T...
...GA GA...
...GCGC GCGC
14.) Biotechnology
is the manipulation of cells and their protein components.
is a very new science studying the treatment of diseases.
is not involved in genetic engineering.
was used to study the cause of diabetes.
uses such tools as restrictive enzymes as well as gene splicing and silencing.
Every cell uses all the DNA it contains continually in protein synthesis.
The transcription of much of the cell’s DNA is restricted most of the time.
The human genome estimates a range of 30,000 to 40,000 genes.
Such things as the environment and maturity of an organism will help determine what genes are being transcribed.
Some genes are never transcribed in certain cells.
8.) Changes in the sequence of bases in DNA is called mutations. How do these changes take place?
A mistake is made in the pairing of sugars.
The bonding of base pairs is too rapid for the proofreading enzymes to keep up.
There is not any DNA polymerase present in the cell.
There is not enough ultraviolet light present.
A mistake is made in base pairing during replication.
9.) Which of the following statements concerning DNA electrophoresis is correct?
Longer DNA fragments migrate farther than shorter fragments.
Migration distance is inversely proportional to the fragment size.
Positively charged DNA migrates more rapidly than negatively charged DNA.
Uncut DNA migrates farther than DNA cut with restriction enzymes.
All of the above
10.) What is DNA polymerase?
an enzyme involved in making RNA
a peptide base included in both RNA and DNA
an enzyme involved in DNA replication
a proofreading enzyme on DNA molecules
an enzyme that breaks down DNA at the end of the cell’s life.
11.) The effects of a mutation
are the same no matter what cell they occur in.
are usually for the good of the animal.
have the greatest potential of change for the future in cells destined to be gametes.
caused by deletion and insertion on a gene is very slight.
in gametes is not passed on to the next generation of organisms.
12.) Mutations
are the basis for genetic variation in organisms over time according to the theory of evolution.
are usually harmless to the organism.
of a single gene are the cause of a large number of diseases in both humans and other organisms.
called translocation cause both sickle-cell anemia and cystic fibrosis.
taking place in parent gametes are more likely to be passed by the male.
13.) A restriction enzyme acts on the following DNA segment by cutting both strands between adjacent thymine and cytosine nucleotides ...............TCGCGA......................
.. ...............AGCGCT........................ Which of the following pairs of sequences indicates the sticky ends that are formed?
...GCGC CGCG...
...TCGC TCGC...
...T T...
...GA GA...
...GCGC GCGC
14.) Biotechnology
is the manipulation of cells and their protein components.
is a very new science studying the treatment of diseases.
is not involved in genetic engineering.
was used to study the cause of diabetes.
uses such tools as restrictive enzymes as well as gene splicing and silencing.