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.
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.