TLS Online TPP Program

#Question id: 23193


When you try to image two fluorescent spots separated by 75 nm the fluorescence overlap so much that they look like one spot. Which microscopy can resolve this?

#Unit 13. Methods in Biology
  1. Confocal microscopy
  2. Photoactivated localization microscopy
  3. Cryoelectron microscopy
  4. Phase contrast microscopy
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TLS Online TPP Program

#Question id: 12837

#Unit 2. Cellular Organization

Haploid yeast cells were grown in culture and stained with propidium iodide, a fluorescent dye that is incorporated into DNA. The x axis shows DNA content, the y axis the number of cells. The DNA content analysis shows different populations of cells.

Which of the following statement is correct regarding to above graph?

TLS Online TPP Program

#Question id: 13111

#Unit 2. Cellular Organization

Which of the following utilizes the H2O2 generated by other enzymes in the organelle to oxidize a variety of other substances—including alcohols, phenols, formic acid and formaldehyde—by the “peroxidative” reaction?

TLS Online TPP Program

#Question id: 13112

#Unit 2. Cellular Organization

In photorespiration, glycolic acid (glycolate), a two-carbon product of photosynthesis is released from chloroplasts and oxidized into glyoxylate and H2O2 by a peroxisomal enzyme called 

TLS Online TPP Program

#Question id: 13113

#Unit 2. Cellular Organization

------are water soluble, heterogeneous branched polysaccharides that contain many negatively charged D- galacturonic acid residues along with D- glucuronic acid residues.

TLS Online TPP Program

#Question id: 13114

#Unit 2. Cellular Organization

--------- is a biological plastic and non-fibrous material. It occurs only in mature cell walls and is made of an insoluble hydrophobic aromatic polymer of phenolic alcohols.

TLS Online TPP Program

#Question id: 13115

#Unit 2. Cellular Organization

Match the correct one -