TLS Online TPP Program

#Question id: 11909


In the birds, butterflies and some reptiles, sex is still chromosomal, but the male that possesses two identical sex chromosome while the female has two different sex chromosome,  in this case which one is determining  sex?

#Unit 8. Inheritance Biology
  1. Female is determining sex
  2. Male is determining sex
  3. homogametic sex chromosome is determining sex
  4. Heterogametic sex chromosome is determining sex either it is derived from male and female                          
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TLS Online TPP Program

#Question id: 27487

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is incorrect regarding the given figure

TLS Online TPP Program

#Question id: 27486

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the is true regarding D-Mannose,  D-Glucose, and D-Galactose
1. D-Mannose are epimer with D-Glucose, at C2
2. D-Glucose, are epimer with D-Galactose at C4
3. D-Mannose are epimer with D-Galactose at C4
4. D-Galactose are epimer with D-Mannose at C2

TLS Online TPP Program

#Question id: 27485

#Unit 1. Molecules and their Interaction Relevant to Biology

Two sugars that differ in configuration at only one chiral center are described as

TLS Online TPP Program

#Question id: 27484

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is truly stating about the stereochemistry of D-Erythrose, L-Erythrose  and D-Threose and L-Threose

1. D-Erythrose, L-Erythrose are enantiomers to each other

2. D-Erythrose, L-Erythrose are diastereomers to each other

3. D-Erythrose and D-Threose are diastereomers to each other 

4. D-Erythrose, L-Erythrose are enantiomers to each other 

TLS Online TPP Program

#Question id: 27483

#Unit 1. Molecules and their Interaction Relevant to Biology

Compounds which have the same molecular formula and sequence of bonded elements, but which are nonsuperimposable, non-mirror images

TLS Online TPP Program

#Question id: 27482

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is holds true for the D-Ribose (Rib), D-Arabinose (Ara), D-Xylose (Xyl), D-Lyxose (Lyx)