What crucial role does RNA play in the RNA world hypothesis?
Only genetic information storage
Only catalysis
Both genetic information storage and catalysis
Structural support
Related Questions
During periods of active protein synthesis, which type of RNA experiences the highest increase in concentration within a cell?
mRNA
tRNA
rRNA
miRNA
The “RNA world” hypothesis proposes that RNA preceded DNA and proteins as the primary genetic material. A major challenge to this hypothesis is the relative instability of RNA compared to DNA. Why is RNA less stable?
RNA utilizes uracil instead of thymine.
RNA is typically single-stranded.
The 2'-OH group on the ribose sugar makes RNA susceptible to hydrolysis.
RNA is shorter than DNA.
Which type of RNA is the most abundant in a typical animal cell?
mRNA
tRNA
rRNA
snRNA
Which process is essential for maintaining the chromosome number across generations in sexually reproducing organisms?
Mitosis
Meiosis
Binary Fission
Fragmentation
Which of the following contributes to the faster evolution of RNA viruses?
High mutation rate during replication
Presence of a DNA intermediate
Slower replication rate
Complex capsid structure
Non genetic RNA is of?
Genetic information transfer
Regulatory, catalytic, and structural roles
Protein coding
Energy storage
Which of these is NOT a supporting argument for the RNA world hypothesis?
RNA's ability to self-replicate
RNA's catalytic properties
The existence of ribozymes
DNA's higher stability
What crucial role does RNA play in the RNA world hypothesis?
Only genetic information storage
Only catalysis
Both genetic information storage and catalysis
Structural support
Why is RNA considered a less stable molecule than DNA?
The presence of uracil instead of thymine.
The single-stranded nature of RNA.
The presence of the 2'-OH group in ribose.
The shorter length of RNA molecules.
The RNA world hypothesis proposes that RNA was the primary genetic material in early life. Which of the following properties of RNA supports this hypothesis?
RNA is more stable than DNA.
RNA can act as both a carrier of genetic information and a catalytic enzyme.
RNA is double-stranded, providing redundancy in genetic information.
RNA cannot be degraded by enzymes.
