1) Chemoorganotrophs a. can live from air and minerals only b. require an organi
ID: 3167215 • Letter: 1
Question
1) Chemoorganotrophs
a. can live from air and minerals only b. require an organic compound as energy source c. can be phototrophs d. are always anaerobic bacteria e. are none of the above
2) In agarose gel electrophoresis DNA migrates from the _______ to the _________ pole because DNA is __________ charged.
3) Restric6on enzymes are widespread among ___________, where they serve a protec6ve func6on.
3) List two features of 16S ribosomal RNA genes that make them suitable as a molecule to determine evolu6onary rela6onship among prokaryotes: a. ________________________ b. _________________________
Explanation / Answer
Q.1 answer is B. require an organic compound as energy source. Chemoorganotrophs are the organisms which use organic chemicals as energy source. Organic chemicals can be sugars, fats, proteins etc. They oxidize organic chemicals. This process can occur in presence or absence of oxygen.
Q.2 In agarose gel electrophoresis DNA migrates from the precast wells in the gel to the positively charged anode pole because DNA is negatively charged.
Q.3 Restriction enzymes are wide spread among Bacteria, where they serve a protective function.
Q.3 2 features of 16S ribosomal RNAgene - a. it is highly conserved between different species of bacteria and archea b. 16 s r rna gene have slow rate of evolution. These 2 characters are mainly responsible fo making this gene use as molecular clock.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.