Bacterial Defense -

a. Secrete polysaccharide coats

b. Prevent viruses from injecting their nucleic acids

c. Restriction endonucleases

d. CRISPR- Cas systems

TLS Online TPP Program

#Id: 3716

#Unit 2. Cellular Organization

Complexity (denoted by N) is the number of base pairs of unique or nonrepeating DNA in a given segment of DNA

TLS Online TPP Program

#Id: 5028

#Unit 3. Fundamental Processes

The replication cycle can be defined in terms of two constants: C and D

C is the fixed time of 40 minutes required to replicate the entire E.coli chromosome. Its duration corresponds to a rate of replication fork movement of 50,000 bp/minute.

D is the fixed time of 20 minutes that elapses between the completion of a round of replication and the cell division with which it is connected. This period may represent the time required to assemblethe components needed for division.

TLS Online TPP Program

#Id: 4489

#Unit 13. Methods in Biology

PR segment – Conduction through AV node

TLS Online TPP Program

#Id: 724

#Unit 3. Fundamental Processes

Activity of the replication origin is controlled is DNA methylation

TLS Online TPP Program

#Id: 2528

#Unit 13. Methods in Biology

The duration of annealing step is usually 1 min during the first as well as the subsequent cycles of PCR.