TLS Online TPP Program

#Question id: 697


The major reason that antiparallel B-stranded protein structures are more stable than parallel B-stranded structures is that the latter:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. are in a slightly less extended configuration than antiparallel strands.

  2. do not have as many disulfide crosslinks between adjacent strands.

  3. do not stack in sheets as well as antiparallel strands.

  4. have weaker hydrogen bonds laterally between adjacent strands.

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TLS Online TPP Program

#Question id: 14978

#Unit 2. Cellular Organization

Inclusion bodies are enclosed by a membrane about 2.0 to 4.0 nm thick, which is single-layered and not a typical bilayer membrane. They are 
1. Poly β hydroxybutyrate granules
2. cyanophycin granules
3. Glycogen granules
4. Sulfur granules
5. Gas vacuoles
6. Polyphosphate granules
Which option is having correct combinations?

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