Transcription and translation occur simultaneously in prokaryotes. Why can't this process take place in eukaryotes?
What disadvantage results from such linking in prokaryotes? What will be an ideal response?
Concepts to Consider: The main barrier to linking transcription and translation in
eukaryotes is, of course, the nucleus. In addition, newly synthesized eukaryotic DNA is not
ready to undergo translation due to the need for posttranscriptional processing. In
prokaryotes, the linking of transcription and translation results in the loss of one level of
possible control of gene expression.
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Bioluminescence in Vibrio harveyi is due to an alternate sigma factor that prevents ________ from binding to Lux mRNA, thus allowing translation of bioluminescent genes.
A. antisense B. autoinducing proteins C. phosphate D. ribosomes
Answer the following statements true (T) or false (F)
1. Myosin is a motor protein that walks along intermediate filaments. 2. The flagellum is composed of a 9 + 2 arrangement of microtubules called the axoneme. 3. The Golgi apparatus is much like a warehouse; it processes proteins and sorts them for delivery to certain parts of the cell. 4. Materials move in and out of the nucleus via endocytosis and exocytosis. 5. Both lysosomes and peroxisomes are important for detoxifying substances in the cell.
Which of these processes are coupled in prokaryotes but NOT in eukaryotes?
A) transcription and translation B) replication and transcription C) replication and translation D) transcription and splicing
Nutrient absorption mostly happens in the ____
a. stomach b. small intestine c. colon d. pancreas e. esophagus