Homework SourseBiology II Please answer all of these questions only if you
Biology II . Please answer all of these questions only if you are sure about it. Be detailed.
1) _________________ is a type of horizontal gene transfer during which genetic information is transferred from one bacterium to another via a pilus.
Transfer
Conduction
Conjugation
Transduction
E. Transformation
2) A young graduate student is trying to identify new species of bacteria based on Mayr\'s biological species concept. She is having a lot of trouble with this method, and then suddenly realizes that she can\'t use Mayr\'s definition of a species when it comes to bacteria. Why? (Select all correct choices.
Bacteria do not reproduce sexually and/or do not undergo meiosis.
DNA can be passed between bacteria of different species via horizontal gene transfer.
DNA is never passed between bacteria of different species.
D. Bacteria form pili and, as a result, reproduce sexually.
3) Archaea and bacteria used to be grouped in the same category. How were archaea first distinguished from other prokaryotes?
through the observation that archaea can live in extreme environments
through the lack of horizontal gene transfer in archaeons
through differences in cell size and shape
through the fact that archaeons have linear and not circular chromosomes
E. through differences in their genomic sequences
4) Bacterial genetic diversity can arise from which of the following? Select all correct choices.
random mutation.
binary fission.
horizontal gene transfer.
meiotic recombination.
E. sexual reproduction.
5) Which of the following is not a basic feature of a prokaryotic cell? Select all taht apply.
Mitochondria
Cell Wall
Ribosomes
DNA
RNA
A system for generating ATP
A nucleus
| A. | Transfer | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| B. | Conduction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| C. | Conjugation | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| D. | Transduction | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| E. Transformation 2) A young graduate student is trying to identify new species of bacteria based on Mayr\'s biological species concept. She is having a lot of trouble with this method, and then suddenly realizes that she can\'t use Mayr\'s definition of a species when it comes to bacteria. Why? (Select all correct choices.
|
Solution
1) Conjugation is a type of horizontal gene transfer during which genetic information is transferred from one bacterium to another via a pilus.
A. Transfer
B. Conduction
C. Conjugation
D. Transduction
E. Transformation
The following are the general transformation methods, where transfer of genetic material from one bacteria (donor) to another bacteria (recipient) of the same generation takes place.
Note: Conduction and Transfer are not genetic transformation methods.
