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TLS Online TPP Program

#Question id: 2063

In what way do the membranes of a eukaryotic cell vary?

#SCPH05 I Biotechnology

  1. Phospholipids are found only in certain membranes.

  2. Certain proteins are unique to each membrane.

  3. Only certain membranes of the cell are selectively permeable.

  4. Some membranes have hydrophobic surfaces exposed to the cytoplasm while others have hydrophilic surfaces facing the cytoplasm.
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TLS Online TPP Program

#Question id: 9270

#SCPH06 I Botany

In the lowest excited state, the excited chlorophyll has four alternative pathways for disposing of its available energy which of the statement of alternative pathway would be INCORRECT?
TLS Online TPP Program

#Question id: 936

#SCPH01 Biochemistry

At neutral pH, the main ionic form of ammonia is ________.
TLS Online TPP Program

#Question id: 838

#SCPH28 | Zoology

Which of the following correct predict the transition state?
TLS Online TPP Program

#Question id: 790

#SCPH05 I Biotechnology

Presence of a series of 3 G-C pairs in the anticodon arm of initiator fmet tRNA is essential for
TLS Online TPP Program

#Question id: 14151

#I Life Science/ Life Sciences Group – I-V

Which of the following statement is true?
A) PAM matrices are derived from an evolutionary model whereas the BLOSUM matrices consist of entirely direct observations. 
B) Because of BLOSUM matrices have less evolutionary meaning that is why the PAM matrices are used most often for reconstructing phylogenetic trees.
C) BLOSUM matrices are entirely derived from local sequence alignments of conserved sequence blocks, whereas the PAM matrix is based on the global alignment of full-length sequences.
D) BLOSUM matrices are more advantageous in searching databases and finding conserved domains in proteins.