ENZYMES REGULATION QUIZ

5' TAACGGT 3'

5' ATTGCCA 3'

5' UAAGCCU3'

5' TGGCAAT 3'

CAU and CAC

UAA and UAC

UUA and UUC

AUG and AUA

universal

universal except for rare exceptions in mitochondria and some protozoa

species-specific

kingdom-specific

An infinite number

3

64

20

second base

first base

third base

none of these

the initiating amino acid is N- formyl methionine

the initiating amino acid is methionine

the initiating amino acid is phenyl alanine

None of these

termination code

none of these

initiation code

propagation code

None of these

second type of positive control of gene expression

positive control of gene expression

negative control of gene expression

All of these

Advanced cells lack RNA

RNA can both code genetic information and act as a catalyst

DNA and enzymes are only present in the most advanced cells

Mixed co-polymer mRNA synthesis

In vitro synthesis of a polypeptide using UUUUU

Labeled peptide binding to a ribosome

None of these