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TLS Online TPP Program

#Question id: 180

Which of the following statements about aromatic amino acids is correct?

#Unit 1. Structure and Function of Biomolecules

  1. All are strongly hydrophilic.

  2. Histidine’s ring structure results in its being categorized as aromatic or basic, depending on pH.

  3. On a molar basis, tryptophan absorbs more ultraviolet light than tyrosine.

  4. The major contribution to the characteristic absorption of light at 280 nm by proteins is the phenylalanine R group.

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TLS Online TPP Program

#Question id: 29095

#Unit 8. Inheritance Biology

The following table summarizes the result of a cross between two strains of Neurospora having the alleles A and a, respectively. The table shows the different patterns of octad arrangement, and the number of ascus observed of each type;

A) According to the graph first two column are from meiosis with no crossover between locus A and_____I_______ 

B) The pattern for first these two columns represent______II_______

C) The distance between the locus A and the centromere is ___III___ map units
TLS Online TPP Program

#Question id: 29103

#Unit 8. Inheritance Biology

Which of the following is a correct prediction about Anaphase?
TLS Online TPP Program

#Question id: 29104

#Unit 8. Inheritance Biology

At which phases of the cell cycle are seen that the number of chromosome per cell is equals to the number of DNA molecules per cell ?
TLS Online TPP Program

#Question id: 29105

#Unit 8. Inheritance Biology

If two set of chromosome is considered in G1 phase, then at which phase of the cell cycle, the no of chromosome as well as no of DNA cell both are doubled?
TLS Online TPP Program

#Question id: 29106

#Unit 8. Inheritance Biology

For the proper segregation of the chromosome at anaphase-I chiasma formation take place. At which stage of the cell cycle crossing over takes place?
TLS Online TPP Program

#Question id: 29107

#Unit 8. Inheritance Biology

Aneuploids may arise through nondisjunction, the failure of homologous chromosomes or sister chromatids to separate in meiosis. which of the following statements is correct?

a) Meiosis I non-disjunction leads to produce all gamete become aneuploidy

b) Meiosis II non-disjunction leads to produce half of gametes n+1 and n-1 while other half normal haploid

c) Either meiosis I or meiosis II non-disjunction leads to produce all aneuploidy gamete

d) Meiosis II non-disjunction leads to produce all gamete become n+1 and n-1