Course Information:
Course: 2409_INTRODUCTION TO BIOLOGY [2409_BIOL_1010_02]
Student: Nicholas Saintvil
Test: Genetics and Medicine Quiz
Date Started: 10/11/24 at 10:02 AM
Date Submitted: 10/11/24 at 10:10 AM
Status: Completed
Score: 46 out of 50 points
Time Elapsed: 8 minutes in a 40-minute timeframe
Promoter Region & Lac Repressor in E. coli
Statement: The promoter region is the binding site for the lac repressor in E. coli.
Selected Answer: False
Correct Answer: True
Introns in mRNA
Statement: Introns are non-coding and not included in the final mRNA that is translated.
Selected Answer: False
Correct Answer: True
Rosalind Franklin's Nobel Prize
Statement: Rosalind Franklin was awarded a Nobel Prize for her work in DNA x-ray diffraction.
Selected Answer: False
Correct Answer: True
Nitrogenous Bases and Protein Synthesis
Statement: The order of nitrogenous bases in DNA determines the order of amino acids in proteins.
Selected Answer: True
Correct Answer: True
tRNA and Transcription
Statement: tRNA is required for transcription.
Selected Answer: False
Correct Answer: False
Epigenetic Modification
Question: Which of the following is an example of an epigenetic modification?
Selected Answer: Methylation of DNA that silences a specific gene.
Correct Answers: Other options clarified.
Metaphase Stage of Mitosis
Question: What happens during metaphase?
Selected Answer: Chromosomes align in the middle of the cell.
Correct Answer: Chromosomes align in the middle of the cell.
Frameshift Mutation Example
Question: Which sentence variation is most like a frameshift mutation?
Selected Answer: The dod idn ote at.
Lac Operon in Presence of Lactose
Question: What happens to the lac operon?
Selected Answer: The operon is turned on, and genes for lactose metabolism are transcribed.
Correct Answer: Same as selected.
MicroRNAs (miRNAs) Binding
Question: Where do miRNAs typically bind?
Selected Answer: To messenger RNA (mRNA) molecules.
Transcription Factors
Selected Answer: Attach to DNA.
Ribosome Composition
Selected Answer: Ribosomes are composed of RNA and protein.
DNA Double Helix Structure
Selected Answer: Hydrogen bonds hold the strands together.
Zygote Chromosome Number
Selected Answer: A diploid chromosome number - one from each parent.
Role of Transcription Factors
Selected Answer: To regulate the initiation of transcription by binding to specific DNA sequences.
RNA Production Enzyme
Selected Answer: RNA polymerase.
Eukaryotic DNA Replication Direction
Selected Answer: 5’ -> 3’ direction.
Genetic Code Units
Selected Answer: Three-nucleotide sequences.
DNA Replication Outcome
Selected Answer: Two DNA molecules, each with one new strand and one original strand.
Central Dogma of Molecular Biology
Selected Answer: DNA -> RNA -> Protein.
Function of RNA Polymerase
Selected Answer: To transcribe DNA into RNA.
Function of siRNAs
Selected Answer: To turn off gene expression.
Regulatory RNA Types
Selected Answer: MicroRNA.
Codons for Amino Acids
Selected Answer: 6 codons needed for 6 amino acids.
Responsible for Mutant Fruit Fly Appearance
Selected Answer: A mutation in a hox gene.
Lac Operon Function
Selected Answer: Prevents lactose-utilizing enzymes from being expressed when lactose is present.
Meiosis Occurrence
Selected Answer: False (Meiosis occurs in germ cells only).
RNAi Mechanism
Selected Answer: False (RNAi functions in many organisms, not just plants).
Hox Genes Similarity
Selected Answer: False (Hox genes are similar across species).