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TLS Online TPP Program

#Question id: 3269

Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of

#Unit 11. Evolution and Behavior

  1. parallel evolution.

  2. convergent evolution.

  3. allopatric speciation.

  4. introgression

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TLS Online TPP Program

#Question id: 13155

#Unit 2. Cellular Organization

Lysozyme is an enzyme that destroys bacterial cell walls. It does so by hydrolyzing the β(1→4) glycosidic linkages from N- acetylmuramic acid (NAM or MurNAc) to N- acetylglucosamine (NAG or GlcNAc) in cell wall peptidoglycans. The only functional groups in the immediate vicinity of lysozyme’s reactive center that have the required catalytic properties are the side chains of Glu 35 and Asp 52.
a- Glu perform reaction in its protonated state and Asp perform reaction in its deprotonated state. 
b- Glu perform reaction in its deprotonated state and Asp perform reaction in its protonated state. 
c- both in its protonated form
d- both in its deprotonated form 
Choose the correct option?
TLS Online TPP Program

#Question id: 11029

#Unit 7. System Physiology – Animal

Damage to the sinoatrial node in humans would ________.
TLS Online TPP Program

#Question id: 24188

#General Aptitude

The entire low-carbohydrate versus low-fat diet argument is so prevalent that one would think that these are the only two options available for losing weight and staying healthy. Some experts even feel that the low-carb/low-fat debate distracts us from an even more important issue—our culture’s reliance on processed and manufactured foods.

The paragraph best supports the statement that
TLS Online TPP Program

#Question id: 11048

#Unit 6. System Physiology – Plant

In vascular plants, phloem is the living tissue that transports the soluble organic compound made during photosynthesis in the form of sugar, The phloem tissue is made up of cells called phloem elements. Which of the following given phloem elements are directly involved in translocation?
TLS Online TPP Program

#Question id: 798

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the structural properties of DNA with the respective types of DNA in which they are found.

               COLUMN – I                                             COLUMN – II

A.        Pitch per turn of helix                                     1. 45.6 angstrom                   

                                                                                      2. 24.6 angstrom                               

 3. 33.2 angstrom

B.        Helix packing diameter                                 1. 23.7 angstrom            

                                                                                     2. 18.4 angstrom            

3. 25.5 angstrom

C.        Major-groove proportions                            1. Flattened out on helix surface

                                                                                      2. Extremely narrow but very deep

 3. Wide and of intermediate depth

D.        Minor-groove proportions                            1. Very broad but shallow

                                                                                     2. Extremely narrow but very deep

                                                                                    3. Narrow and of intermediate depth