In prokaryotic cells, translation begins before transcription is finished. Give two reasons why this would not be possible in eukaryotic cells.
What will be an ideal response?
Answer: In a prokaryotic cell, translation begins while the mRNA is being transcribed because since there is no nucleus to separate the process of transcription and translation, once bacterial genes are transcribed, the transcript can be translated immediately. Also, because both transcription and translation are spatially separated in eukaryotic cells, the transcription process can occur in the nucleus in order to produce a pre-mRNA molecule.
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A. 1-2% B. 10-15% C. 15-20% D. 20-30% E. 50-75%
Immune system cells differentiate between self and foreign cells by their ________.
A. markers B. sizes C. shapes D. cell processes E. cell walls
Ashante is having surgery for a blocked coronary artery. The physician is inserting a catheter with a tiny balloon to open the blocked vessel
What is this procedure called, and what else might the physician do to keep the artery open in the long term?
Which of the following contributed to the successful application of Koch's postulates?
A. The development of the compound microscope. B. The theory of abiogenesis. C. The ability to record the appearance of bacteria photographically. D. The development of simple bacterial staining techniques. E. The development of techniques for sterile transfer of bacteria.