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TLS Online TPP Program

#Question id: 803

A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand to form a B-DNA structure,

#SCPH05 I Biotechnology

  1. half the base-pairs will be A-G pairs and half will be C-T pairs.

  2. each base will form at least two hydrogen bonds with a base in the opposite strand.

  3. the two strands will form an antiparallel left-handed helix with 12 base pairs per turn.

  4. there will be covalent phosphodiester bonds between the two strands.

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TLS Online TPP Program

#Question id: 6973

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

Which of the following cells would be considered differentiated?
TLS Online TPP Program

#Question id: 10565

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

The term Yp is the hydrostatic pressure of the solution
TLS Online TPP Program

#Question id: 10804

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

Major types of alkaloids, their amino acid precursors, and well-known examples of each type;

Alkaloid class

Biosynthetic precursor

Examples

A. Pyrrolidine

i. Lysine

a. Coniine

B. Tropane

ii. Ornithine

b. Retrorsine

C. Piperidine

 

c. Lupinine

D. Pyrrolizidine

 

d. Nicotine

E. Quinolizidine

 

e. Atropine and Cocaine

Which of the following combination from the given table is correct?
TLS Online TPP Program

#Question id: 3018

#SCPH05 I Biotechnology

In the growth curve of a bacteria population, the bacteria are rapidly increasing in number in the
TLS Online TPP Program

#Question id: 14268

#SCPH05 I Biotechnology

An activated-sludge waste treatment system is required to reduce the amount of BOD5 from 1000 mg/l to 20 mg/l at the exit. The sedimentation unit concentrates biomass by a factor of 3. Kinetic parameters are µm = 0.2 h-1 , Ks = 80 mg/l, kd = 0.01 h-1 , and Y M X/S = 0.5 g MLVSS/g BOD5. The flow of waste water is 10000 l/h and the size of the treatment basin is 50,000 l. What is the value of the solids residence time?