In what phase of bacteria growth do bacteria grow exponentially? A. Lag B. log C
ID: 101437 • Letter: I
Question
In what phase of bacteria growth do bacteria grow exponentially? A. Lag B. log C. Stationary D. All of the above Which of the following proteins is responsible for the single strand displacement during conjugation? A. RecA B. RecB C. RecC D. RecD Which of the following plasmids confer resistance? A. F factors B. R Plasmids C. Col plasmids D. All of the above Foreign DNA that is picked up during transformation recombines with host DNA to produce: A. Synaptonema B. Homologous pair C. D. Phage hybrid What is a viral plaque? A. Bacteria colonies B. Dead viruses C. Spaces because of dead bacteria in the lawn of their colonies D. Spaces because of dead viruses in the lawn of viral colonies A prophage is: A. Viral genome in bacteria genome B. Naked virus outside bacteria C. Bacteria genome in viral genome D. Bacterial genome outside of phage head The region on Y chromosome that share homology with X chromosomes and which and recombines is known as: A.Explanation / Answer
23-C
Transduction is the process by which foreign DNA is introduced into a cell by a virus or viral vector. An example is the viral transfer of DNA from one bacterium to another. The bacterial DNA integrated in to the bacteriophage genome enters the head of the bacteriophage and its gets transferred to other bacteria when the same bacteriophage attacks other bacteria in the vicinity.
24-B
In the lysogenic cycle, the viral genome gets integrated in to the bacterial genome and replicate along with it. They don’t lyse the bacterium until the all the conditions are favourable to them.
25-B
The exponential growth of the bacteria generally occurs in the log phase, while the lag phase will help in acclimatisation of the bacteria to the environment preparing it for division during log pahse.
26-A
27-B
R Plasmids confer the antibiotic resistance.
28-
29-C
Viral plague is the region where the bacteripahge grows on the bacterial colonies leaving them dead.
30-A
genetic material of a bacteriophage, incorporated into the genome of a bacterium
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