What are RNA molecules with catalytic activity called?
Enzymes
Ribozymes
Ribosomes
Deoxyribozymes
Related Questions
If a cell with 2n chromosomes undergoes mitosis, what will be the chromosome number in the daughter cells?
n
2n
3n
4n
Which of the following is considered a potential precursor to RNA in the RNA world hypothesis?
Deoxyribonucleic acid (DNA)
Proteins
Peptide nucleic acid (PNA)
Lipids
Which prebiotic condition would have MOST significantly hindered the formation of stable RNA polymers in the early Earth environment?
An abundance of organic molecules like amino acids and nucleotides
The presence of clay minerals that can catalyze RNA polymerization
High concentrations of metal ions that catalyze RNA hydrolysis
Alternating cycles of wetting and drying
Why is the existence of the ribosome considered further evidence for the RNA world hypothesis?
Ribosomes are primarily composed of proteins.
Ribosomes synthesize DNA.
The catalytic core of the ribosome is made of rRNA.
Ribosomes are found only in eukaryotes.
In the context of the RNA world hypothesis, what is the significance of ribozymes?
They store genetic information.
They are building blocks of proteins.
They demonstrate that RNA can catalyze reactions.
They transport amino acids.
If you were to analyze the RNA content of a human liver cell, which type of RNA would you expect to find in the highest concentration?
mRNA
tRNA
rRNA
miRNA
During periods of active protein synthesis, which type of RNA experiences the highest increase in concentration within a cell?
mRNA
tRNA
rRNA
miRNA
A critical piece of evidence supporting the RNA world hypothesis is the existence of ribozymes. Which characteristic of ribozymes is MOST significant in this context?
Their sensitivity to RNase degradation
Their single-stranded structure
Their ability to catalyze both self-replication and peptide bond formation
Their presence in both prokaryotes and eukaryotes
Given below are two statements:
Statement I: RNA has a higher mutation rate than DNA.
Statement II: Viruses with RNA genomes and shorter lifespans exhibit faster mutation and evolution.
In light of the above statements, choose the correct answer from the options given below:
Both Statement I and Statement II are correct, and Statement II is the correct explanation of Statement I.
Both Statement I and Statement II are correct, but Statement II is not the correct explanation of Statement I.
Statement I is correct, but Statement II is incorrect.
Statement II is correct, but Statement I is incorrect.
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
