TLS Online TPP Program

#Question id: 2117


Which of the following statements correctly describes osmosis?

#Section 2: General Biology
  1. Osmosis only takes place in red blood cells.

  2. Osmosis is an energy-demanding or "active" process.

  3. In osmosis, water moves across a membrane from areas of lower solute concentration to areas of higher solute concentration.

  4. In osmosis, solutes move across a membrane from areas of lower water concentration to areas of higher water concentration.

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TLS Online TPP Program

#Question id: 5307

#Section 7: Recombinant DNA technology and Other Tools in Biotechnology

Which of the following techniques would be most appropriate to test the hypothesis that humans and chimps differ in the expression of a large set of shared genes?

TLS Online TPP Program

#Question id: 1574

#Section 2: General Biology

A bacterium entering the body through a small cut in the skin will do which of the following?

TLS Online TPP Program

#Question id: 3573

#Section 3: Genetics, Cellular and Molecular Biology

Homozygous yellow and round seed was crossed with green and wrinkle seed plant. All F1 offspring having yellow and round seed plant were allowed to self fertilization. What is the proportional of F2 plant heterozygous for both characters?

TLS Online TPP Program

#Question id: 626

#Section 2: General Biology

A metabolic pathway proceeds according to the scheme, R -> S -> T -> U -> V -> W.  A regulatory enzyme, X, catalyzes the first reaction in the pathway.  Which of the following is most likely correct for this pathway?

TLS Online TPP Program

#Question id: 15876

#Section 6: Plant, Animal and Microbial Biotechnology

The following growth regulators (GRs)- auxins, cytokinins, ABA and GA3 are used in plant tissue culture, The common range of concentrations used are as follows:
GROWTH REGULATOR(GRs)                                     CONCENTERATION
A) AUXIN                                                                       i) 0.1-3 mg/L
B) GA3                                                                          ii) 0.2 mg/L
C) CYTOKININ                                                           iii) 0.1-1 mg/L
D) ABA