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TLS Online TPP Program

#Question id: 2083

Sphingolipids are considered amphipathic glycolipids if:

#SCPH05 I Biotechnology

  1. their polar head groups are sugars that are not linked to the tails via a phosphate group.

  2. they are phospholipids with a one-chain hydrophobic tail.

  3. have one fatty acyl chain attached to carbon 2 of glycerol.

  4. their polar head groups are sugars that are linked to the tails via a phosphate group.

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TLS Online TPP Program

#Question id: 13087

#SCPH06 I Botany

To express a yeast gene in E. coli, your task is to design a strategy to insert the yeast gene into the bacterial plasmid. Below is a map of the area of the yeast genome surrounding the gene in which you are interested.

 
The distance between each tick mark placed on the line above is 100 bases in length
Below are the enzymes you can use, with their specific cut sites shown 5’-XXXXXX-3’ 3’-XXXXXX-5’

 
The plasmid is 5,000 bases long and the two farthest restriction enzyme sites are 200 bases apart. The plasmid has an ampicillin resistance gene somewhere on the plasmid distal from the restriction cut sites.

                              
Which of the following restriction enzyme is the best choice for you use to design a way to get the insert into the vector?
TLS Online TPP Program

#Question id: 14933

#SCPH05 I Biotechnology

E. coli was continuously cultured in a continuous stirred tank fermenter with a working volume of 1.0 I by chemostat. A medium containing 4.0 g1-1 of glucose as a carbon source was fed to the fermenter at a constant flow rate of 0.5 I h-1, and the glucose concentration in the output stream was 0.20 g1-1, The cell yield with respect to glucose YxS was 0.42 g dry cells per gram glucose. Determine the cell concentration in the output stream 
TLS Online TPP Program

#Question id: 4981

#SCPH28 | Zoology

An organism has a relatively large number of Hox genes in its genome. Which of the following is not true of this organism?
TLS Online TPP Program

#Question id: 19330

#SCPH06 I Botany

Which one of the following can be used to measure the environmental and water quality?
TLS Online TPP Program

#Question id: 10943

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

An 8-year-old male is frequently coming to the clinic for persistent skin infections that do not heal within a normal time frame. He had a normal recovery from the measles. Checking his antibodies following immunizations yielded normal antibody responses. A defect in which of the following cells would most like be the cause of the continual infections?