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TLS Online TPP Program

#Question id: 3415

Imagine a plant of extremely variable height that is pollinated by three different pollinators, one that was attracted to short plants, another that preferred plants of medium height and a third that visited only the tallest plants. If the pollinator that preferred plants of medium height disappeared from an area. What is concluding of this condition?

#Unit 11. Evolution and Behavior

  1. Selection pressures act against plants in the middle of the trait distribution is a result of disruptive natural selection

  2. Selection pressures act against plants in the short and medium of the trait distribution is a result of directional natural selection

  3. Selection pressures act against plants in the short and tall of the trait distribution is a result of stabilized natural selection

  4. Selection pressures random act against plants in the any of the trait distribution is a result of cyclic natural selection

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TLS Online TPP Program

#Question id: 23162

#Unit 13. Methods in Biology

Match the fluorescent dyes in column I with emission light in column II
Column I                                                                          Column II
1. Texas                                                                            a. far red
2. Fluorescein                                                                   b. red
3. Rhodamine                                                                   c. blue 
4. Cy5                                                                               d. green
Which of the following option comprises all correct matches?
TLS Online TPP Program

#Question id: 23163

#Unit 13. Methods in Biology

Out of the given below alexa dyes which one will emit in red light range?
TLS Online TPP Program

#Question id: 23164

#Unit 13. Methods in Biology

Out of the given below alexa dyes which one will emit in Blue light range?
TLS Online TPP Program

#Question id: 23165

#Unit 13. Methods in Biology

For visualizing two proteins which are localized in nucleus through fluorescence microscopy which two sets of dyes can be best used for clear visual?
TLS Online TPP Program

#Question id: 23166

#Unit 13. Methods in Biology

To visualize two proteins in fixed Hela cells using an epifluorescence microscope. Below is a list of various fluorophores (dyes) available to see those proteins.
1. FITC
2. GFP
3. Fluorescein
4. Alexa 568
Select the correct combinations of the appropriate dyes that would typically be utilized to observe co-localization in an epifluorescence microscope?
TLS Online TPP Program

#Question id: 23167

#Unit 13. Methods in Biology

A secondary antibody can be generated by immunizing a goat with antibody which segment that is common to all rabbit IgG antibodies called goat anti-rabbit.