Practice Questions

TLS Online TPP Program

#Question id: 1033

A research lab is trying to produce new antibiotics. They come up with drugs that detach the hydrophilic heads from the phospholipids in plasma membranes. This drug

#SCPH28 | Zoology

would be highly toxic and completely useless for human beings-we also have plasma membranes with hydrophilic head groups!
would be highly toxic only to bacteria, making it an excellent drug to develop and test further. Humans have a different phospholipid structure in their cell plasma membranes than bacteria.
would generally not be toxic enough to damage Gram-negative bacteria, as their plasma membranes lie under a thick layer of peptidoglycan.
would be highly toxic for human beings, but might be useful as a topical antibiotic skin cream. The top layer of skin cells is dead anyway, so it wouldn't matter if this damaged those cells. It could NOT be taken internally, though, by human beings.

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TLS Online TPP Program

#Question id: 18385

#SCPH28 | Zoology

Oil is a natural product, has many components and is biodegradable, the different components being degraded at different rates but still oil spills are considered as recalciterants because

TLS Online TPP Program

#Question id: 12099

#SCPH28 | Zoology

According to the competitive exclusion principle, two species cannot continue to occupy the same

TLS Online TPP Program

#Question id: 15475

#SCPH05 I Biotechnology

Production of single-cell protein from hexadecane is described by the following reaction equation:

C₁₆H₃₄ + aO₂ + bNH₃

cCH_l.66O_0.27N0_.20 + dCO₂ + eH₂O

where CH _1.660_0.27N_0.20 represents the biomass. If RQ= 0.43, determine the stoichiometric coefficients.

TLS Online TPP Program

#Question id: 924

#SCPH05 I Biotechnology

Which of the following is not true regarding the oxidation of 1 mol of palmitate (16:0) by the B-oxidation pathway?

TLS Online TPP Program

#Question id: 5715

#SCPH28 | Zoology

Following some abnormality is due to Gene rearrangement on chromosome.

A, Affecting the expression of gene

B. Disrupt the function of gene

C. Reduced recombination between gene present in inverted region

D. Cross over suppressor

Which of the following above abnormality is may be associated with inversion?