TLS Online TPP Program

#Question id: 124


What is the role of cholesterol in animal cell membranes?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Blocks the association of the fatty acyl chains of phospholipids at high temperature.

  2. Aids in the transport of small hydrophobic molecules across the membrane.

  3. Is a receptor site for hormones on the surface of membranes.

  4. Broadens the temperature range of optimum membrane fluidity.

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TLS Online TPP Program

#Question id: 21253

#Unit 12. Applied Biology

Which of the following statements about the metabolite production along with microbial growth?

TLS Online TPP Program

#Question id: 21254

#Unit 12. Applied Biology

Match the following plant sources with their secondary metabolites and medical uses;

SOURCES PLANTSECONDARY METABOLITESUSE
P. Coleus blumeii. Atropinea. Insecticidal
Q. Atropa belladonnaii. Reserpineb. Cardiac tonic
R. Trianthema portucalastrumiii. Rosamarinic acidc. Muscle relaxant
S. Digitalis lanataiv. Phytoecdysonesd. Antioxidant

TLS Online TPP Program

#Question id: 21255

#Unit 12. Applied Biology

Industrially, the most important primary metabolites are amino acids, nucleotides and vitamins, these metabolites are manufactured by__

TLS Online TPP Program

#Question id: 21256

#Unit 12. Applied Biology

Production of l-Glutamic Acid by overproducing glutamate through some microorganism__

TLS Online TPP Program

#Question id: 21257

#Unit 12. Applied Biology

Lysine is a member of the_______________of amino acids.

TLS Online TPP Program

#Question id: 21258

#Unit 12. Applied Biology

Some classes of mutants were obtained from the parental strain as the source of genetic material for transduction:
I) A strain that are resistance to thialysine
II) A strain in which both the threonine-regulated AK and HD were resistant to feedback inhibition by threonine
III) A strain is selected for ß-hydroxynorvaline Sensitive, in which HDI was sensitive to both inhibition and repression and the threonine-regulated AK was constitutively synthesized