Practice Questions

TLS Online TPP Program

#Question id: 5350

Which of the following most probable mode of genetic disorder?

#Unit 8. Inheritance Biology

A- Autosomal recessive B- X link recessive C- Autosomal recessive
A- Autosomal recessive B- X link recessive C- Autosomal dominant
A- Autosomal dominant B- Autosomal recessive C- Autosomal recessive
A- X link recessive B- Autosomal recessive C- Autosomal recessive

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TLS Online TPP Program

#Question id: 21966

#Unit 2. Cellular Organization

Which of the following is true about interphase chromosome

a. Interphase chromosomes occupy chromosome territories in the nucleus

b. Interphase chromosomes occupy chromosome territories toward cell membrane

c. Interphase chromosomes are not entangled with each other except cancer

d. Interphase chromosomes are entangled with each other except cancer

TLS Online TPP Program

#Question id: 20998

#Unit 12. Applied Biology

C-phenol present in Activated sludge are usually biodegraded by which microorganism?

TLS Online TPP Program

#Question id: 18776

#Unit 13. Methods in Biology

In Western blotting, a protein mixture is separated by electrophoresis; then the protein bands are electrophoretically transferred onto nitrocellulose and identified with

TLS Online TPP Program

#Question id: 464

#Unit 1. Molecules and their Interaction Relevant to Biology

Calculate the equilibrium constant for an oxidation-reduction reaction involving the transfer of 1 mole of electrons with DE0ʹ= 0.25 V. (R = 8.315 JK-1mol-1, F = 96.48 kJV-1mol-1, T = 298 K)

TLS Online TPP Program

#Question id: 15617

#Unit 13. Methods in Biology

Wild type E. coli metabolizes the sugar lactose by expressing the enzyme ß-galactosidase. You have isolated a mutant that you call lac1–, which cannot synthesize ß-galactosidase and cannot grow on lactose (Lac–). During an condition you have a wild type (Lac+) strain carrying a Tn5 insertion known to be near several Lac genes on the E. coli chromosome. You grow P1 phage on this strain and use the resulting phage lysate to infect the lac1– strain, selecting for kanamycin resistance (Kanr). Among 100 Kanr transductants, you find that 82 are Lac– and 18 are Lac+. Express the distance between Tn5 and the lac1– mutation as a cotransduction frequency;