BSC 108 EXAM 3 KENNEDY ] ACTUAL LATEST 2026|
2027 EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
DNA and RNA are polymers composed of - ANSWER-nucleotide monomers
In a DNA double helix, adenine pairs with ______ and guanine pairs with _______. -
ANSWER-thymine; cytosine
If one strand of DNA has the sequence ATCCGA, what is the sequence of the other
strand? - ANSWER-TAGGCT
Describe the process of transcription. What are the starting molecules and the end
products? - ANSWER-Transcription is the manufacture of a strand of RNA
complementary to a strand of DNA. In initiation, RNA polymerase binds to a promoter
region on the DNA strand. RNA synthesis occurs during the elongation phase as RNA
nucleotides are added to the growing RNA polynucleotide. When the RNA polymerase
reaches the terminator region of the gene, elongation stops and the polymerase and new
RNA molecule detach. The starting molecules are DNA, RNA polymerase, and RNA
nucleotides. The end product is a new strand of RNA.
How many nucleotides make up a codon? - ANSWER-three
Which of the following is the correct sequence of events that occurs during
transcription? - ANSWER-initiation, elongation, termination
A three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or
termination signal - ANSWER-codon
An infectious form of a protein - ANSWER-prion
, A virus that infects bacteria - ANSWER-bacteriophage
A noncoding portion of a gene - ANSWER-intron
A coding portion of a gene - ANSWER-exon
A specific sequence of three nucleotides that is complementary to a codon - ANSWER-
anticodon
How do viruses differ from bacterial cells? - ANSWER-Viruses are not cellular and cannot
reproduce outside of a host organism.
After replication, each new DNA double helix consists of one old strand and one new
strand. - ANSWER-True
What is any change to the genetic information of a cell or virus - ANSWER-a mutation
Translation converts the information stored in ____ to ____. - ANSWER-RNA; polypeptide
What cellular structure facilitates the process of translation? - ANSWER-ribosomes
Describe the role of mRNA. - ANSWER-mRNA brings the code of DNA to the ribosome
where it is used to construct a protein.
The three parts of a nucleotide are a - ANSWER-sugar, phosphate, nitrogen base
A geneticist finds that a particular mutation has no effect on the polypeptide encoded by
the gene. This mutation probably involves - ANSWER-substitution of one nucleotide
2027 EXAM WITH CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS LATEST ALREADY
GRADED A+
DNA and RNA are polymers composed of - ANSWER-nucleotide monomers
In a DNA double helix, adenine pairs with ______ and guanine pairs with _______. -
ANSWER-thymine; cytosine
If one strand of DNA has the sequence ATCCGA, what is the sequence of the other
strand? - ANSWER-TAGGCT
Describe the process of transcription. What are the starting molecules and the end
products? - ANSWER-Transcription is the manufacture of a strand of RNA
complementary to a strand of DNA. In initiation, RNA polymerase binds to a promoter
region on the DNA strand. RNA synthesis occurs during the elongation phase as RNA
nucleotides are added to the growing RNA polynucleotide. When the RNA polymerase
reaches the terminator region of the gene, elongation stops and the polymerase and new
RNA molecule detach. The starting molecules are DNA, RNA polymerase, and RNA
nucleotides. The end product is a new strand of RNA.
How many nucleotides make up a codon? - ANSWER-three
Which of the following is the correct sequence of events that occurs during
transcription? - ANSWER-initiation, elongation, termination
A three-nucleotide sequence of DNA or mRNA that specifies a particular amino acid or
termination signal - ANSWER-codon
An infectious form of a protein - ANSWER-prion
, A virus that infects bacteria - ANSWER-bacteriophage
A noncoding portion of a gene - ANSWER-intron
A coding portion of a gene - ANSWER-exon
A specific sequence of three nucleotides that is complementary to a codon - ANSWER-
anticodon
How do viruses differ from bacterial cells? - ANSWER-Viruses are not cellular and cannot
reproduce outside of a host organism.
After replication, each new DNA double helix consists of one old strand and one new
strand. - ANSWER-True
What is any change to the genetic information of a cell or virus - ANSWER-a mutation
Translation converts the information stored in ____ to ____. - ANSWER-RNA; polypeptide
What cellular structure facilitates the process of translation? - ANSWER-ribosomes
Describe the role of mRNA. - ANSWER-mRNA brings the code of DNA to the ribosome
where it is used to construct a protein.
The three parts of a nucleotide are a - ANSWER-sugar, phosphate, nitrogen base
A geneticist finds that a particular mutation has no effect on the polypeptide encoded by
the gene. This mutation probably involves - ANSWER-substitution of one nucleotide
