TLS Online TPP Program

#Question id: 661


Which technique is commonly used to determine the three-dimensional conformation of a protein?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. isoelectric focusing

  2. the Edman degradation

  3. SDS-PAGE 

  4. X-ray crystallography

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TLS Online TPP Program

#Question id: 5295

#Unit 8. Inheritance Biology

A cross is made between an Hfr that is met+ thi+ pur+ and an F-that is met- thi- pur-. Interrupted mating studies show that met+ enters the recipient last, so met+ recombinants are selected on a medium containing supplements that satisfy only the pur and thi requirements.  These recombinants are tested for the presence of the thi+ and pur+ alleles. The following numbers of individuals are found for each genotype:

A) Gene Order

I

Thi Pur  Met

II

Pur  Met  Thi

III

Pur   Thi  Met

B) Distance between Pur and Thi

IV

15.4 map unit

V

1.8 map unit

What is the following correct combination?

TLS Online TPP Program

#Question id: 15716

#Unit 11. Evolution and Behavior

Evolutionary biology extends and amplifies the explanation of biological phenomena. It complements studies of the proximate causes (immediate, mechanical causes) of biological phenomena If we ask what causes a male bird to sing, the proximate causes include the action of testosterone or other hormones

TLS Online TPP Program

#Question id: 5637

#Unit 5. Developmental Biology

In an experiment, Sperm from mice carrying loss-of-function mutations in the Izumo gene. Which of the following statement is correct?

TLS Online TPP Program

#Question id: 30057

#Unit 7. System Physiology – Animal

The difference between systolic pressure and diastolic pressure known as:

TLS Online TPP Program

#Question id: 3545

#Unit 8. Inheritance Biology

Consider the accompanying pedigree of a rare autosomal recessive disease, PKU. Male with PKU marry with normal female whose father is PKU. What is probability of child affected with PKU?