Two plant species co-occur in a prairie. Species X always occurs near species Y. However, species Y often occurs in isolation from species X and produces more seeds when alone than when growing next to species X. Which of the following interactions between species X and Y could generate this pattern?

TLS Online TPP Program

#Question id: 18620

#Unit 13. Methods in Biology

Variants of PCR has been devised for

a) efficiency

b) sequence specific amplification

c) mutation analysis

d) fluorescence

TLS Online TPP Program

#Question id: 7091

#Unit 5. Developmental Biology

The development of the antero-posterior axis of Drosophila is initiated when:

TLS Online TPP Program

#Question id: 11188

#Unit 7. System Physiology – Animal

Refer to the following graph of an action potential to answer the question.

The minimum graded depolarization needed to operate the voltage-gated sodium and potassium channels is indicated by the label ________.

TLS Online TPP Program

#Question id: 180

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements about aromatic amino acids is correct?

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?