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Protein Synthesis (Pre-test)

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For each of the following questions select the best answer.

1. Which of the following correctly describes Central Dogma (or the flow of genetic information) in biology:
a. RNA-Transcription-DNA-Translation-Protein
b. DNA-Transcription-RNA-Translation-Protein
c. DNA- Translation-RNA- Transcription-Protein
d. DNA-Transcription-Protein-Translation-RNA
e. RNA-Transcription-Protein-Translation-DNA
2. Which of the following correctly describe combinations of name and functions of RNA molecules important in Translation:
a. rRNA: form basic structure of ribosome; catalyze protein synthesis
b. mRNA: adaptor between RNA and amino acids
c. tRNA: code for proteins
d. Both a. and b.
e. All of the above
3. Secretory proteins are:
a. Commonly synthesized by ribosomes on the rough endoplasmic reticulum (rER)
b. Always synthesized by floating cytoplasmic ribosomes
c. Post-translationally processed in the Endoplasmic reticulum and Golgi
d. Both a. and c.
e. Both b. and c.
4. Which of the following statements about synthesis and sorting of secretory proteins is/are true:
a. They are synthesized in vesicles or granules
b. They may be glycosylated only in the Golgi
c. They have specific signal sequences that target them to the ER
d. They have specific protein sequences that direct their transport from ER to Golgi but never from Golgi to ER
e. All of the above