SAT BIOLOGY (ECOLOGICAL +
MOLECULAR) EXAM
QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES
GRADED A+ LATEST
All the following about the structure of DNA are correct EXCEPT
(a) DNA is a polymer
(b) DNA contains deoxyribose
(c) the two strands are connected by hydrogen bonding
(d) adenine bonds to guanine
(e) nucleotides consist of a sugar, phosphate, and nitrogenous base - answer-All the
following about the structure of DNA is correct EXCEPT (d) adenine bonds to guanine.
If guanine makes up 28% of the nucleotides in a sample of DNA from an organism, then
thymine would make up___percent of the nucleotide.
(a) 0
(b) 22
(c) 28
(d) 44
(e) 56 - answer-If guanine makes up 28% of the nucleotides im a sample of DNA from
an organism, then thymine would make up (b) 22 percent of the nucleotide.
All the following statements about RNA are correct EXCEPT
(a) there are three kinds of RNA: mRNA, rRNA, and tRNA
(b) RNA stands for ribonucleic acid
(c) RNA is single stranded
(d) RNA contains the nitrogen bases C,G,A, and T
(e) RNA contains the sugar ribose - answer-All the following statement about RNA are
correct EXCEPT (d) RNA contains the nitrogen bases C,G,A and T.
DNA can be cut into small pieces with
(a) introns
(b) exons
(c) PCR
(d) restriction enzymes
(e) RNA - answer-DNA can be cut into small pieces with (d) restriction enzymes.
, If the sequence of a strand of DNA is AAATAACCGGGGATC, then the sequence on the
corresponding mRNA strand is
(a) AAAUAACCGGGGATC
(b) TTTATTGGCCCCTAG
(c) UUUTUUGGCCCUAG
(d) TTTUTTGGCCCCTAG
(e) UUUAUUGGCCCCUAG - answer-The sequence of a strand of DNA is
AAATAACCGGGGATC, then the sequence on the corresponding mRNA strand is (e)
UUUAUUGGCCCCUAG.
All the following are correct about RNA processing EXCEPT
(a) it is a rare occurrence and results in mutations
(b) introns are removed
(c) it occurs after transcription
(d) the initial transcript is longer than the final transcript
(e) it occurs in the nucleus - answer-All the following are correct about RNA processing
EXCEPT (a) it is a rare occurrence and results in mutations.
Synthesis of RNA. - answer-Transcription
Requires RNA polymerase. - answer-Transcription
Synthesis of DNA. - answer-Replication
Removal of introns, noncoding region of DNA. - answer-RNA processing
Involves the formation of a polypeptide chain. - answer-Translation
Occurs during interphase of the cell cycle. - answer-Replication
Requires DNA polymerase. - answer-Replication
Polyploidy results from
(a) nondisjunction
(b) aneuploidy
(c) Down syndrome
(d) infection with a virus
(e) RNA processing - answer-Polyploidy results from (a) nondisjunction.
Referred to as molecular scissors - answer-Restriction enzymes
Used to separate large molecules of DNA on the basis of their rate of movement
through an agarose gel in an electric field. - answer-Gel electrophoresis
Taking DNA from two sources and combining them into one cell. - answer-Aneuploidy
MOLECULAR) EXAM
QUESTIONS AND CORRECT
ANSWERS WITH RATIONALES
GRADED A+ LATEST
All the following about the structure of DNA are correct EXCEPT
(a) DNA is a polymer
(b) DNA contains deoxyribose
(c) the two strands are connected by hydrogen bonding
(d) adenine bonds to guanine
(e) nucleotides consist of a sugar, phosphate, and nitrogenous base - answer-All the
following about the structure of DNA is correct EXCEPT (d) adenine bonds to guanine.
If guanine makes up 28% of the nucleotides in a sample of DNA from an organism, then
thymine would make up___percent of the nucleotide.
(a) 0
(b) 22
(c) 28
(d) 44
(e) 56 - answer-If guanine makes up 28% of the nucleotides im a sample of DNA from
an organism, then thymine would make up (b) 22 percent of the nucleotide.
All the following statements about RNA are correct EXCEPT
(a) there are three kinds of RNA: mRNA, rRNA, and tRNA
(b) RNA stands for ribonucleic acid
(c) RNA is single stranded
(d) RNA contains the nitrogen bases C,G,A, and T
(e) RNA contains the sugar ribose - answer-All the following statement about RNA are
correct EXCEPT (d) RNA contains the nitrogen bases C,G,A and T.
DNA can be cut into small pieces with
(a) introns
(b) exons
(c) PCR
(d) restriction enzymes
(e) RNA - answer-DNA can be cut into small pieces with (d) restriction enzymes.
, If the sequence of a strand of DNA is AAATAACCGGGGATC, then the sequence on the
corresponding mRNA strand is
(a) AAAUAACCGGGGATC
(b) TTTATTGGCCCCTAG
(c) UUUTUUGGCCCUAG
(d) TTTUTTGGCCCCTAG
(e) UUUAUUGGCCCCUAG - answer-The sequence of a strand of DNA is
AAATAACCGGGGATC, then the sequence on the corresponding mRNA strand is (e)
UUUAUUGGCCCCUAG.
All the following are correct about RNA processing EXCEPT
(a) it is a rare occurrence and results in mutations
(b) introns are removed
(c) it occurs after transcription
(d) the initial transcript is longer than the final transcript
(e) it occurs in the nucleus - answer-All the following are correct about RNA processing
EXCEPT (a) it is a rare occurrence and results in mutations.
Synthesis of RNA. - answer-Transcription
Requires RNA polymerase. - answer-Transcription
Synthesis of DNA. - answer-Replication
Removal of introns, noncoding region of DNA. - answer-RNA processing
Involves the formation of a polypeptide chain. - answer-Translation
Occurs during interphase of the cell cycle. - answer-Replication
Requires DNA polymerase. - answer-Replication
Polyploidy results from
(a) nondisjunction
(b) aneuploidy
(c) Down syndrome
(d) infection with a virus
(e) RNA processing - answer-Polyploidy results from (a) nondisjunction.
Referred to as molecular scissors - answer-Restriction enzymes
Used to separate large molecules of DNA on the basis of their rate of movement
through an agarose gel in an electric field. - answer-Gel electrophoresis
Taking DNA from two sources and combining them into one cell. - answer-Aneuploidy
