Practice Questions

TLS Online TPP Program

#Question id: 48

Which of the following statements regarding enantiomers true?

#Unit 1. Molecules and their Interaction Relevant to Biology

All (+) enantiomers are levorotatory
All (-) enantiomers rotate plane polarized light in a counterclockwise direction
(+) and (-) enantiomers rotate plane polarized light in opposite directions
All R enantiomers are dextrorotatory

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TLS Online TPP Program

#Question id: 4738

#Unit 8. Inheritance Biology

Red kernel color in wheat results from the presence of at least one dominant allele of each of two independently segregating genes . Kernels on rr bb plants are white, and the genotypes R— bb and rr B— result in brown kernel color. Suppose that plants of a variety that is true breeding for red kernels are crossed with plants true breeding for white kernels produced F1 were allowed to selfing .what are F2 phenotype ratio ?

TLS Online TPP Program

#Question id: 24452

#Unit 13. Methods in Biology

The term electrocorticogram (ECoG) is used for the recording obtained with:

TLS Online TPP Program

#Question id: 15876

#Unit 12. Applied Biology

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