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TLS Online TPP Program

#Question id: 13207

The polymer-trapping model explains symplastic loading in plants with intermediary-type companion cells, this model makes three prediction; which one of the following prediction is INCORRECT?

#Unit 6. System Physiology – Plant
  1. Sucrose should be more concentrated in the mesophyll than in the intermediary cells
  2. The enzymes for raffinose and stachyose synthesis should be preferentially located in the intermediary cells
  3. The plasmodesmata linking the bundle sheath cells and the intermediary cells should exclude molecules larger than sucrose
  4. Plasmodesmata between the intermediary cells and sieve elements must be smaller donot allow passage of raffinose and stachyose
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TLS Online TPP Program

#Question id: 14979

#Unit 2. Cellular Organization

Which is not true of mitochondria and chloroplasts?
TLS Online TPP Program

#Question id: 14980

#Unit 2. Cellular Organization

The membranes of eukaryotes and mycoplasma
TLS Online TPP Program

#Question id: 14981

#Unit 2. Cellular Organization

The endoplasmic reticulum has many important functions. It transports proteins, lipids, and probably other materials through the cell. The ER is also a major site of 
TLS Online TPP Program

#Question id: 14982

#Unit 2. Cellular Organization

A very important function of the Golgi apparatus and endoplasmic reticulum is the synthesis of another organelle, the lysosome. This organelle is found in a variety of organisms such as—
1.Protozoa 
2. Some algae
3. Fungi
4. Plants 
5. Animals
In which of the above organisms lysosome is not found.
TLS Online TPP Program

#Question id: 14983

#Unit 2. Cellular Organization

A network of intermediate filaments, called the nuclear lamina, lies against the inner surface of the envelope and supports it. Which structure usually is associated with the inner membrane
TLS Online TPP Program

#Question id: 14984

#Unit 2. Cellular Organization

Just beneath the plasma membrane  many protozoa and some algae have a different external, rigid layer of components. The structure is called as