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#Question id: 33895


Which technique can be used to separate single-stranded DNA from double-stranded DNA during reassociation studies?

#Unit 2. Cellular Organization
  1. Affinity Chromatography
  2. Hydroxyapatite column chromatography
  3. Hydrophobic interaction chromatography
  4. PCR
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TLS Online TPP Program

#Question id: 1646

#Unit 4. Cell Communication and Cell Signaling

The basic immunoglobulin (Ig) unit is composed of:

TLS Online TPP Program

#Question id: 8855

#Unit 9. Diversity of Life Forms

A spongeʹs structural materials (spicules, spongin) are manufactured by the

TLS Online TPP Program

#Question id: 3056

#Unit 2. Cellular Organization

Ten bacteria were inoculated into a rich medium. If at the end of ten hours the total number of cells is 10^4, then the number of elapsed generations and the generation time respectively is

TLS Online TPP Program

#Question id: 18779

#Unit 13. Methods in Biology

Flow-cytometric analysis for the detection and measurement of subpopulations of leukocytes, including those of leukaemia, is usually performed using monoclonal antibodies. Why is this the case?
Choose whether each of the following statements is true 
a) Indirect immunofluorescence is a more sensitive technique than direct immunofluorescence
b) Most antigens induce a polyclonal response. 
c) For precipitation to occur, both antigen and antibody must be multivalent.
d) ELISA tests using chemiluminescence are more sensitive than chromogenic ones and precipitation tests are more sensitive than agglutination tests

TLS Online TPP Program

#Question id: 10527

#Unit 6. System Physiology – Plant

Based on their feeding behaviors, three major types of insect herbivores can be distinguished, which evades the constitutive defense;

A) Phloem feeders                                                                    i) caterpillars, grasshoppers, and beetles

B) Cell-content feeders                                                            ii) aphids and whiteflies

C) Chewing insects                                                                    iii) mites and thrips

Correctly match the feeding behaviour with its insects;