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TLS Online TPP Program

#Question id: 4141

Bacterial ribosomes:

#Unit 3. Fundamental Processes

  1. bind tightly to specific regions of DNA, forming polysomes.

  2. contain at least one catalytic RNA molecule (ribozyme).

  3. contain three species of RNA and five different proteins.

  4. require puromycin for normal function.

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TLS Online TPP Program

#Question id: 416

#Unit 1. Molecules and their Interaction Relevant to Biology

The immediate precursors of DNA and RNA synthesis in the cell all contain:
TLS Online TPP Program

#Question id: 19791

#Unit 13. Methods in Biology

Which of the following statements about polymerase chain reaction is correct?
a) PCR denaturation temperature calculated by using Y = X (1+E)n
b) Size of the primer negatively affects the efficiency of PCR
c) Standard PCR doesn’t efficiently amplify sequence much longer than about 5kb.
d) Primer annealing of PCR at 550C for 1.5 min.
e) Time taken for each cycle of PCR considerably longer than 3 min.
TLS Online TPP Program

#Question id: 945

#Unit 1. Molecules and their Interaction Relevant to Biology

A key precursor in the synthesis of aromatic amino acids (tryptophan, tyrosine and phenylalanine) is ________.
TLS Online TPP Program

#Question id: 19214

#Unit 12. Applied Biology

Depending on the Ti plasmid, the length of the T-DNA region can vary from approximately 
TLS Online TPP Program

#Question id: 12029

#Unit 7. System Physiology – Animal

When used appropriately, antibiotic treatment can effectively reduce bacteria populations and help fight infections. However, antibiotic treatments can have unintended effects. What is one concern when using antibiotics?