TLS Online TPP Program

#Question id: 622


An enzyme-catalyzed reaction was carried out with the substrate concentration initially a thousand times greater than the Km for that substrate.  After 9 minutes, 1% of the substrate had been converted to product, and the amount of product formed in the reaction mixture was 12 micromol.  If, in a separate experiment, one-third as much enzyme and twice as much substrate had been combined, how long would it take for the same amount (12 micromol) of product to be formed?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. 1.5 min

  2. 13.5 min

  3. 27 min

  4. 3 min

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TLS Online TPP Program

#Question id: 4881

#Unit 8. Inheritance Biology

A panel of cell lines was created from mouse–human somatic-cell fusions. Each line was examined for the presence of human chromosomes and for the production of three enzymes. The following results were obtained On the basis of above results. Which of the following chromosome location of enzyme 1, enzyme 2, and enzyme 3?

TLS Online TPP Program

#Question id: 4880

#Unit 8. Inheritance Biology

There is following normal gene and their restriction site are given

 Mutant phenotype due to mutation that alters EcoRI site 1 occurs in this piece of DNA. There is following analysis of different band in their family (+ present , - absent) 

Visible band

Male Parents I

Female Parents II

Son  ( affected )

Daughter  ( normal)

2 Kb

+

+

-

+

4 Kb

+

+

-

+

5 Kb

+

+

+

+

6 Kb

-

+

+

+

 Which of the following is mode of inheritance of trait?

TLS Online TPP Program

#Question id: 4879

#Unit 8. Inheritance Biology

A wild plant with genes AABBCC was crossed with a triple recessive mutant aabbcc. The F1 male hybrid (AaBbCc) was then back crossed with the triple mutant and the phenotypes recorded are as follows

AabbCc (50), aaBbcc(50), AaBbCc (100), aabbcc (100), AaBbcc (350), aabbCc (350)

Distance between A to B is ----------M----- map unit with ………N…….configuration, distance between B to C is ----O---- map unit with ------P-------configuration?

TLS Online TPP Program

#Question id: 4719

#Unit 8. Inheritance Biology

When a trait exhibits complete co-dominance rather than complete dominance, a cross between heterozygote results deviation of following;

TLS Online TPP Program

#Question id: 4723

#Unit 8. Inheritance Biology

The most common cause of the pleiotropic effect of gene is due to

TLS Online TPP Program

#Question id: 4724

#Unit 8. Inheritance Biology

Which of the following are true about crossing over ?