Practice Questions

TLS Online TPP Program

#Question id: 3811

The mechanism of DNA replication is studied in an E. coli replication fork. Which is a characteristic of this replication fork?

#Unit 3. Fundamental Processes

Strands I and II have base sequences that are identical to each other.
Strands II and IV have an antiparallel orientation as the fork moves to the right.
Strands I and III will be covalently bonded to each other when replication is completed.
Strands III and IV will be H-bonded to each other when replication is completed.

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TLS Online TPP Program

#Question id: 17272

#Unit 13. Methods in Biology

We need to minimum buffering capacity is required so that the pH value of the samples analyzed does not have any influence on the system,

What would happen if we used the higher buffering concentration

a) more electric power is applied, resulting in higher heat development.

b) less electric power for less time is applied, resulting in very high heat development

c) higher buffering concentration need more electric power resulting increases in the temperature will increase the mobility and rate of migration of ions.

d) using the higher buffering concentration shows no affect at all

TLS Online TPP Program

#Question id: 17278

#Unit 13. Methods in Biology

In DNA isolation, which of the following enzyme remove/digest proteins in presence of SDS or chelating agent

TLS Online TPP Program

#Question id: 17279

#Unit 13. Methods in Biology

Which of the following is relatively more stable to heat

TLS Online TPP Program

#Question id: 17280

#Unit 13. Methods in Biology

During DNA isolation, phenol / chloroform extraction is performed to remove

TLS Online TPP Program

#Question id: 17281

#Unit 9. Diversity of Life Forms

Identify each of the following structures as haploid or diploid:

TLS Online TPP Program

#Question id: 17282

#Unit 9. Diversity of Life Forms

Which of the following is a land plant that produces flagellated sperm and has a sporophyte-dominated life cycle?