TLS Online TPP Program

#Question id: 356


How does 0.5 M sucrose (molecular mass 342) solution compare to 0.5 M glucose (molecular mass 180) solution?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Both have 6.02 × 10^23 molecules.

  2. Sucrose has 171 molecules, whereas glucose has 90.

  3. Both have 3.01 × 10^23 molecules.

  4. Sucrose has 171 mg/L, whereas glucose has 90 mg/L.

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TLS Online TPP Program

#Question id: 4279

#Unit 3. Fundamental Processes

The energy required for protein transport into mitochondria is provided by

TLS Online TPP Program

#Question id: 4280

#Unit 3. Fundamental Processes

Translocation of proteins into mitochondria and chloroplasts is characterized by

TLS Online TPP Program

#Question id: 4281

#Unit 3. Fundamental Processes

Proteins targeted to non-matrix regions of mitochondria

a. contain a matrix-targeting signal if the destination is the outer membrane.

b. utilize a stop-transfer signal if the destination is the outer membrane.

c. always contain a matrix-targeting signal if the destination is the intermembrane space.

d. may require a chaperone for transport.

e. always move first to the matrix and then to their final destination.

TLS Online TPP Program

#Question id: 4282

#Unit 3. Fundamental Processes

Which of the following protein(s) is (are) found in the peroxisome matrix?

TLS Online TPP Program

#Question id: 4283

#Unit 3. Fundamental Processes

Proteins can enter which organelle(s) in their folded conformation?

TLS Online TPP Program

#Question id: 4284

#Unit 3. Fundamental Processes

Assays for following the trafficking of proteins through the secretory pathway in living cells require

a. sensitive methods to distinguish the very small differences in organelle density caused by passage of a wave of protein transport through the organelle.

b. a way to identify compartments where labeled proteins are located.

c. the use of cell types that are highly dedicated secretory cells.

d. the use of enucleate cells in order to eliminate the nucleus as a site of labeling.

e. a way to label a cohort of secretory proteins