1:RNA Splicing and Processing

What was RNA first identified as?
a) A structural component of DNA
b) An intermediate in protein synthesis
c) A storage molecule for genetic information
d) A catalyst for DNA replication

• a

• b

• c

• d

What distinguishes interrupted genes?
a) They contain both exons and introns
b) They contain only exons
c) They are found only in unicellular organisms
d) They do not code for proteins

• a

• b

• c

• d

In which group are the majority of genes interrupted?
a) Unicellular eukaryotes
b) Multicellular eukaryotes
c) Prokaryotes
d) Viruses

• a

• b

• c

• d

• RNA has no structural or functional roles in gene expression.

• True

• False

• Interrupted genes are found in all classes of eukaryotes.

• True

• False

• Most unicellular eukaryotic genes contain introns.

• True

• False

1. The majority of genes in multicellular eukaryotes are interrupted.

• True

• False

Where does eukaryotic mRNA processing primarily occur?
a) Cytoplasm
b) Ribosome
c) Nucleus
d) Mitochondria

• a

• b

• c

• d

Why can bacterial mRNA be translated immediately after transcription?
a) It has a nuclear membrane
b) It does not require modifications
c) It undergoes splicing before translation
d) It contains multiple exons and introns

• a

• b

• c

• d

• What is a characteristic of bacterial mRNA?
  a) It is monocistronic
  b) It requires splicing
  c) It can be polycistronic
  d) It is synthesized in the nucleus

• a

• b

• c

• d