
Biology Quiz

Quiz
•
Biology
•
University
•
Hard
Pretesh Prakash
FREE Resource
63 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is NOT true about gene expression in eukaryotes?
Genes are never simultaneously transcribed and translated.
Both Eukaryotes and bacteria have rRNA and tRNA genes.
The lac mRNA in bacteria encodes multiple proteins.
There is only one definition of a gene.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What was the primary finding of the experiment performed by George Beadle and Edward Tatum?
A gene mutation can affect a single enzyme in the pathway for synthesis of arginine.
A gene mutation in a single gene can affect multiple enzymes.
Arginine is an essential amino acid for Neurospora.
Auxotrophs cannot grow without supplementation of the amino acid they are missing.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In bacteria, where are RNAs primarily transcribed?
Cytoplasm
Rough ER
Ribosome
Nucleus
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which enzyme has activity that is most similar to RNA Polymerase?
Helicase
DNA Polymerase
Primase
Exonuclease
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements about transcription is NOT TRUE?
Transcription is a process that occurs in all living cells.
Transcription results in the synthesis of RNA from a DNA template.
Transcription occurs in the nucleus of eukaryotic cells.
Transcription does not involve the unwinding of the DNA double helix.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the absence of lactose, what happens to the expression of the lac repressor?
It is not expressed
It is expressed
It is degraded
It is mutated
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is true regarding the processing of mRNA in Eukaryotes but not in bacteria?
Only Eukaryotes process their mRNAs through splicing, 5' capping, and poly-adenylation.
Only Eukaryotes transcribe tRNAs, rRNAs, and mRNAs.
Transcription and translation occur simultaneously in Eukaryotes, but not bacteria.
Transcription and translation both occur in the nucleus in Eukaryotes.
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