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WorksheetsBio 107 Exam 1 Review
Total questions: 23
Worksheet time: 17mins
Which of the following is the building blocks of DNA?
Ribonucleotides
Deoxyribnucleotides
Amino acids
Peptides
What do we call the bonds holding together adjacent nucleotides in nucleic acids?
Hydrogen bonds
Disulfide bonds
Phosphodiester bonds
Peptide bonds
Which of the following is the building blocks of a protein?
Ribonucleotides
Deoxyribonucleotides
Amino acids
Peptides
Which level of protein structure is defined by the order of amino acids in the peptide chain?
Primary structure
Secondary structure
Tertiary structure
Quaternary structure
Which enzyme could be used to remove the genetic material of dead bacterial cells from a solution?
DNAse
RNAse
Protease
Lipase
What is the process called where the cell synthesizes proteins from a DNA template?
Transcription
Translation
Replication
The cell does not do this
Which of the following best describes the sequence of an RNA relative to the DNA from which it was transcribed?
The RNA sequence is the same as the template strand but has U’s instead of T’s
The RNA sequence is the same as the template strand but has T’s instead of U’s
The RNA sequence is the same as the coding strand but has U’s instead of T’s
The RNA sequence is the same as the coding strand but has T’s instead of U’s
Which of the following is not associated with the processing of pre-mRNA?
5’- Cap
3’- Poly-adenosine tail
Splicing out Introns
Translation
Which of the following RNA processing steps in not done in prokaryotic cells?
5’- Cap
3’- Poly-adenosine tail
Splicing out Introns
All the above
Which process in the cell has the greatest impact on the regulation of gene expression?
Transcription of the gene
Translation of the mRNA of a gene
Splicing of the pre-mRNA of a gene
Replication of the gene
Which control element is right at the start of a gene and is bound to transcription factors that recruit the RNA Polymerase?
Proximal control elements
Distal control elements
The Promoter
Ribosomal binding sequence
Which RNA can lead to disassembly of a mRNA if it has a complementary sequence?
snRNA
siRNA/miRNA
tRNA
rRNA
Among the 64 different possible codons in mRNA, how many of them do not code for an amino acid?
1 (start codon)
2 (codons and spell CAT and GAG)
3 (stop codons)
4 (codons for amino acid Valine)
Which of the following is true of tRNAs?
They recruit amino acids to the ribosome during translation
When their anti-codon is complementary to the next codon in the mRNA, their amino acid is added to the growing protein
They are loaded (“charged”) with an amino acid by a tRNA synthetase
All the above are true
Which Translation step is different between prokaryotes and eukaryotes?
Initiation
Elongation
Termination
Translation is identical between both cell types
A mutation is...
A change to a protein sequence
A change to a DNA sequence
A change to an RNA sequence
A change to transcription
Which is NOT true about a heritable mutation?
It is in all cells of the body
It is called a “Germline mutation”
It is also known as a “Somatic mutation”
It is inherited
What type of mutation in a gene impacts the sequence of the protein expressed from that gene?
A promoter mutation
A silent mutation
A missense mutation
A deletion mutation that deletes an entire intron from the gene but does not affect any exons
Which of the following are likely occurring in their cells during the progression of a tumor?
Tumor suppressor activity is low
Oncogene activity is high
Both of these answers
None of these answers
What is the structural form of DNA?
alpha helix
alpha and beta helix
double helix (left hand)
double helix (right hand)
Which of the following is necessary for transcription?
DNA polymerase
rRNA
RNA polymerase
tRNA
Which are examples of purine bases?
G and C
C and U
A and G
A and T
5'-Cap of eukaryotic mRNA consists of a modified version of this nucleotide?
Guanosine
Thymidine
Adenosine
Cytidine
