1.) In eukaryotes, general transcription factors _____ Select one: a. bind to ot
ID: 80041 • Letter: 1
Question
1.) In eukaryotes, general transcription factors _____
Select one:
a. bind to other proteins or to the TATA box
b. usually lead to a high level of transcription even without additional specific transcription factors
c. bind to sequences just after the start site of transcription
d. inhibit RNA polymerase binding to the promoter and begin transcribing
2.) In the process of transcription, _____.
Select one:
a. DNA is replicated
b. proteins are synthesized
c. RNA is synthesized
d. mRNA attaches to ribosomes
3.) In the process of translation
Select one:
a. DNA is copied
b. mRNA is made
c. tRNA is made
d. proteins are made on ribosomes
4.) Once researchers identified DNA as the unit of inheritance, they asked how information was transferred from the DNA in the nucleus to the site of protein synthesis in the cytoplasm. What is the mechanism of information transfer in eukarotes?
Select one:
a. DNA from a single gene is replicated and transferred to the cytoplasm, where it serves as a template for protein synthesis.
b. Proteins transfer information from the nucleus to the ribosome, where protein synthesis takes place.
c. Transfer RNA takes information from DNA directly to a ribosome, where protein synthesis takes place.
d. Messenger RNA is transcribed from a single gene and transfers information from the DNA in the nucleus to the cytoplasm, where protein synthesis takes place.
5.) One way to detect alternative splicing of transcripts from a given gene is to _____.
Select one:
a. compare the sequences of different mRNAs made from the given gene
b. compare the DNA sequence of the given gene to that of a similar gene in a related organism
c. measure the relative rates of transcription of the given gene compared to that of a gene known to be constitutively spliced
d. compare the sequences of different primary transcripts made from the given gene
6.) Viruses can contain any of the following genetic material except _____.
Select one:
a. Single stranded RNA used to produce DNA
b. a DNA/RNA hybrid
c. Double stranded DNA
d. Single stranded mRNA used as a template for mRNA
7.) Put the following events of elongation in prokaryotic translation in chronological order.
1. Binding of mRNA with small ribosomal subunit
2. Recognition of initiation codon
3. Complementary base pairing between initiator codon and anticodon of initiator tRNA
4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA
5. Attachment of the large subunit
Select one:
a. 5, 4, 3, 2, 1
b. 2, 1, 4, 3, 5
c. 1, 2, 3, 5, 4
d. 1, 2, 3, 4, 5
Explanation / Answer
1. A) a. bind to other proteins or to the TATA box
description-In eukaryotes, general transcription factors bind to other proteins or to a sequence element within the promoter called the TATA box.
2. A) DNA is replicated
Description-Transcription is the process by which DNA is copied (transcribed) to mRNA, which carries the information needed for protein synthesis.
3. D) proteins are made on ribosomes
Description- translation is the process in which ribosomes in a cell's cytoplasm create proteins, following transcription of DNA to RNA in the cell's nucleus. The entire process is a part of gene expression.
4. D) Messenger RNA is transcribed from a single gene and transfers information from the DNA in the nucleus to the cytoplasm, where protein synthesis takes place.
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