TLS Online TPP Program

#Question id: 218


We use the term tetrahydrofolate to designate a family of related compounds. What is the main difference between members of this family?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. degree of protonation

  2. number of methyl groups on the heterocylic rings

  3. number of phosphate groups

  4. length of the polyglutamate tail group

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TLS Online TPP Program

#Question id: 5288

#Unit 8. Inheritance Biology

Donor strain of bacteria with His+ Ara+ Met+ Leu+ Cys+ Lys+ is infected with phages to map the donor chromosome with generalized transduction .The Phage lysate from bacterial cell is collected and use to infect second strain of bacteria that are His- Ara- Met- Leu- Cys- Lys- . Different transducing phages are selected on using different minimal media and their presence of growth (+) and absence of growth (-) given in table

Media

Media supplement 0 absent /+ present

1

His

Ara

Met

Leu

Cys

Lys

Growth

2

+

+

0

+

+

0

+

3

0

+

+

+

+

0

+

4

+

+

0

+

0

+

-

5

0

+

+

0

+

+

+

6

+

0

+

0

+

+

+

7

+

0

+

+

0

+

+

Which of the following is correct order of gene?

TLS Online TPP Program

#Question id: 689

#Unit 1. Molecules and their Interaction Relevant to Biology

In the diagram below, the plane drawn behind the peptide bond indicates the:   

A) absence of rotation around the C—N bond because of its partial double-bond character.

B) plane of rotation around the Ca—N bond.

C) region of steric hindrance determined by the large C=O group.

D) region of the peptide bond that contributes to a Ramachandran plot.

 Which of the following best represents the backbone arrangement of two peptide bonds?

TLS Online TPP Program

#Question id: 18005

#Unit 9. Diversity of Life Forms

Which structure is common to both gymnosperms and angiosperms? 

TLS Online TPP Program

#Question id: 230

#Unit 1. Molecules and their Interaction Relevant to Biology

Vitamin D helps control the utilization of which ion?

TLS Online TPP Program

#Question id: 10835

#Unit 10. Ecological Principles

Which of the following is not an example of coevolution?