Molecular Biology Q&A: DNA, RNA, Viruses & Replication
Classified in Biology
Written on in 
English with a size of 4.04 KB
Essential Molecular Biology Q&A
Nonsense Mutation Severity
Why is a nonsense mutation usually a severe change? (The polypeptide now stops translation at a different location.)
Virus Multiple Choice
A virus _____ (all of the above)
Telomere Definition
A telomere is _____ (the end of a eukaryotic chromosome)
Intron Function
An intron _____ (is the mRNA sequence removed and not used to code for amino acids)
CRISPR-Cas System
The CRISPR-Cas system _____ (is a prokaryote defense against a virus)
DNA Duplication Term
_____ refers to making a duplicate copy of DNA in a cell (replication)
Virus Host Range
Most viruses can infect _____ (a narrow range of species)
Viral Nucleic Acid with Uracil
A virus nucleic acid is found to include uracil. This means that its nucleic acid must be (RNA)
Eukaryotic Chromosome Structure
The physical structure of a eukaryote chromosome has (DNA wrapped around histone proteins)
Temperate Phages
Phages that use both the lytic and lysogenic cycles are called _____ (temperate phages)
Lysogenic Cycle Action
During the lysogenic cycle, a phage _____ (inserts itself into the bacterial chromosome)
Bacterial DNA Arrangement
DNA in a bacterium is arranged as _____ (circular ring plus plasmid rings)
Eukaryotic Cell Division Preparation
A eukaryotic cell is getting ready to divide. The DNA _____ (will be packed densely together)
miRNA and siRNA Function
MicroRNA (miRNA) and small interfering RNA (siRNA) _____ (can bind to mRNA to prevent use of that RNA)
Protein Replacing RNA Primer
In replication, this protein replaces the RNA primer with DNA bases. (DNA polymerase I)
DNA Unwinding Protein
The protein that unwinds the DNA strands to form a replication bubble. (helicase)
Leading and Lagging Strands
There are a leading and lagging strand in replication, but not in transcription because _____ (replication makes two strands at the same time)
Prokaryotic Coupled Transcription and Translation
True or False. In a prokaryote, a piece of mRNA can be used for translation before the piece of mRNA is completely finished (True)
DNA Strand Joining Protein
The protein that attaches pieces of DNA together to make a complete strand. (DNA ligase)
mRNA from DNA Sequence
If we start with the DNA sequence AACGTCG, what is the strand of mRNA? (UUGCAGC)
Transcription Definition
_____ refers to using DNA to make messenger RNA in a cell. (transcription)
Antiparallel DNA Strands
What is meant by the description "antiparallel" regarding the two strands that make up the DNA double helix? (The 5' to 3' direction of one strand runs opposite to the 5' to 3' direction of the other strand)
Types of Viral Nucleic Acid
The nucleic acid in a particular virus can be _____ (all of the above)
Exon Definition
An exon _____ (is the mRNA sequence used to code for amino acids)
Cell Type DNA vs Expression
How do a person's skin cells compare to their liver cells? (Skin cells and liver cells have identical DNA but different gene expression)
mRNA 5' Cap Addition
Which end of an mRNA strand gets an added GTP (guanosine triphosphate) in eukaryotic cells? (5')