Homework Answers
- Bacteria hav DNA as genetic material.
- Viruses may have DNA or RNA as genetic material.
- Transcription is the process by which DNA sequence is copied to mRNA, by enzyme RNA polymerase.
- It occurs in the cytoplasm of prokaryotic cells like bacteria.
- Translation is the process by which genetic code carried by mRNA is converted to protein.
- It takes place in cytoplasm.
- Viruses uses host machineries to make proteins.
Answer: option 2
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t Question 14 0/2 pts Which of these statements is about bacterial and viral genomes is...
Question 18 4 pts What role do restriction enzymes play in bacteria? How do bacteria protect...
Question 18 4 pts What role do restriction enzymes play in bacteria? How do bacteria protect their own DNA from the action of restriction enzymes? Change the surface proteins of bacteria; since DNA is not protein, there is no need for protection Cut foreign DNA into pieces; bacteria have RNA genomes. Destroy invading viral DNA: bacterial DNA does not contain the restriction enzyme recognition sequences. Restrict the growth rate of bacteria; bacterial DNA is restriction enzyme resistant. Question 18 4...
Complete the sentences about bacterial genomes using the words and phrases (not all words and phrases...
Complete the sentences about bacterial genomes using the words
and phrases (not all words and phrases are used).
metagenomics metagenomics 50% 50% plasmids microgenomics eukaryotic genomes insertion sequences (ISS) a single-stranded DNA molecule bacteriophage (viral) genomes 100 kilobases open reading frames (ORFS) 90% kilobase a single double-stranded DNA molecule The bacterial chromosome is In the E. coll genome, some predicted genes encode proteins with functions that have not yet been determined; these presumed genes are called The E. coli genome...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle of viral Many bacterial cells containing viral DNA are produced 8) Viral DNA is incorporated into the host genome C) Th e viral genome replicates without destroying the host The bacterial host provides the nucleotides, enzymes, ribosomes and other co requires to make viral components D) 2. What is the function of the viral glycoproteins that are present in an enveloped virus? A) They...
ect Question 8 0/2 pts Which of the following statements about RNA polymerase is NOT true?...
ect Question 8 0/2 pts Which of the following statements about RNA polymerase is NOT true? RNA polymerase finishes transcription as soon as it reaches the terminator. RNA polymerase adds a ribonucleotide to the 3' end of a growing RNA molecule. During transcription of a gene, RNA polymerase reads only one strand of DNA. RNA polymerase binds to a promoter to initiate transcription. - U 000 20 O 3 $ 4 % 5 & 7 6. 8
QUESTION 45 Conjugation between bacterial cells involves the equal contribution of genetic material from one bacterial...
QUESTION 45 Conjugation between bacterial cells involves the equal contribution of genetic material from one bacterial cell to the other. True False 2 points QUESTION 46 Is made up of only a single-stranded RNA molecule that does not code for any proteins. Virus Prion Viroid 2 points QUESTION 47 Mutagens can cause mutations by _______. Covalently altering the structure of the nucleotides. Causing errors in DNA replication by disrupting the appropriate pairing between nucleotides. Distorting the helical structure of the...
Which statement among A-D is false regarding animal viral infections? A. Uncoating refers to the process...
Which statement among A-D is false regarding animal viral infections? A. Uncoating refers to the process of viral exit from the host cell. B. Depending on the virus type, assembly of viruses may occur in the nucleus or cytoplasm. C. Budding is a mechanism of virus exit that leads to acquisition of the envelope around the viral particles. D. Endosome formation is a mechanism that allows for the viral genome to be freed from the capsid. none of A-D are...
Which statements about the modification of chromatin structure in eukaryotes are true? 2 pts a. Acetylation...
Which statements about the modification of chromatin structure in eukaryotes are true? 2 pts a. Acetylation of histone tails in chromatin allows access to DNA for transcription. b. Histone proteins are always permanently placed along a DNA sequence but the binding to DNA can be loosened. c. Methylation of DNA is associated with the gene activation. d. Acetylation of histone tails is a reversible process. e. Some forms of chromatin modification can be passed on to future generations of cells.
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms?...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
02 2. Which of the following statements about protein LO synthesis is true? a. Protein synthesis...
02 2. Which of the following statements about protein LO synthesis is true? a. Protein synthesis occurs in the nucleus of the cell. b. Messenger RNA carries amino acids to ribosomes for assembly into proteins. c. In the process of transcription, transfer RNA trans- d. None of the above is true fers its DNA onto a ribosome.
Question 33 2 pts Which of the following statements about the process of DNA replication is...
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Question 18 4 pts What role do restriction enzymes play in bacteria? How do bacteria protect their own DNA from the action of restriction enzymes? Change the surface proteins of bacteria; since DNA is not protein, there is no need for protection Cut foreign DNA into pieces; bacteria have RNA genomes. Destroy invading viral DNA: bacterial DNA does not contain the restriction enzyme recognition sequences. Restrict the growth rate of bacteria; bacterial DNA is restriction enzyme resistant. Question 18 4...
Complete the sentences about bacterial genomes using the words
and phrases (not all words and phrases are used).
metagenomics metagenomics 50% 50% plasmids microgenomics eukaryotic genomes insertion sequences (ISS) a single-stranded DNA molecule bacteriophage (viral) genomes 100 kilobases open reading frames (ORFS) 90% kilobase a single double-stranded DNA molecule The bacterial chromosome is In the E. coll genome, some predicted genes encode proteins with functions that have not yet been determined; these presumed genes are called The E. coli genome...
ach) 1. Which of the following statements correctly describes one replication? characteristic of the lytic cycle of viral Many bacterial cells containing viral DNA are produced 8) Viral DNA is incorporated into the host genome C) Th e viral genome replicates without destroying the host The bacterial host provides the nucleotides, enzymes, ribosomes and other co requires to make viral components D) 2. What is the function of the viral glycoproteins that are present in an enveloped virus? A) They...
ect Question 8 0/2 pts Which of the following statements about RNA polymerase is NOT true? RNA polymerase finishes transcription as soon as it reaches the terminator. RNA polymerase adds a ribonucleotide to the 3' end of a growing RNA molecule. During transcription of a gene, RNA polymerase reads only one strand of DNA. RNA polymerase binds to a promoter to initiate transcription. - U 000 20 O 3 $ 4 % 5 & 7 6. 8
Which statement among A-D is false regarding animal viral infections? A. Uncoating refers to the process of viral exit from the host cell. B. Depending on the virus type, assembly of viruses may occur in the nucleus or cytoplasm. C. Budding is a mechanism of virus exit that leads to acquisition of the envelope around the viral particles. D. Endosome formation is a mechanism that allows for the viral genome to be freed from the capsid. none of A-D are...
Question 16 1 pts Which is true of RNA polymerases in both prokaryotic and eukaryotic organisms? They have the same number of cofactors in prokaryotes and eukaryotes. They are composed of an analogous a 2ßß'w core. They make copies of RNA from either DNA or RNA templates. There is a single enzyme type per organism. Question 17 1 pts What are E. coli sigma (o) subunits in RNA synthesis? transcription factors receptor proteins RNA polymerases ODNA promoter regions Question 11...
02 2. Which of the following statements about protein LO synthesis is true? a. Protein synthesis occurs in the nucleus of the cell. b. Messenger RNA carries amino acids to ribosomes for assembly into proteins. c. In the process of transcription, transfer RNA trans- d. None of the above is true fers its DNA onto a ribosome.
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