TLS Online TPP Program

#Question id: 764


Which of the following is NOT correct about tRNA?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Charging tRNAs with amino acids is mediated by aminoacyl-tRNA synthetases.

  2. tRNA contains a three-nucleotide sequence known as an anticodon.

  3. Some tRNAs can bind to more than one codon due to wobble base pairing in the second base of the codon.

  4. The match between tRNA anticodon and the mRNA codon ensures the fidelity of translation.

More Questions
TLS Online TPP Program

#Question id: 2484

#Unit 2. Cellular Organization

The EB1 protein has several functions.  Which of the following is/are true regarding EB1?

TLS Online TPP Program

#Question id: 3709

#Unit 3. Fundamental Processes

DNA that has been liberally labeled with radioactive 14C is used as the template for replication. Replication is carried out in a medium containing only unlabeled nucleotides. After two rounds of replication, what percent of DNA molecules are still labeled?

TLS Online TPP Program

#Question id: 3587

#Unit 8. Inheritance Biology

Short hair in rabbits (S) is dominant over long hair (s). The following crosses are carried out, producing the progeny shown.

A. short X short = Progeny ( 3 short and 1 long)

B- short  X long = Progeny  (1 short and 1 long )

What is possible genotypes of the parents of  cross A and cross B respectively

TLS Online TPP Program

#Question id: 24611

#Unit 2. Cellular Organization

Choose which of the following statement regarding Tetrahymena and mouse
a. Tetrahymena micronucleus have 5 no. chromosomewhile macronucleus having 225 no. chromosome
b. Tetrahymena macronucleus have 5 no. chromosome while micronucleus having 225 no.chromosome
c. Mouse have 20 haploid set chromosomes
d. Mouse have 20 diploid set chromosomes

TLS Online TPP Program

#Question id: 4897

#Unit 8. Inheritance Biology

When two independent pure lines AAbb and aaBB of pea with white flowers are crossed, the F1 progeny has purple flowers. Gene A and B link at 20 map unit. The following conclusions were made

A. When an heterozygous individual of the genotype AaBb is test crossed, progenies with purple and white in a ratio of 1:3

B. When an heterozygous individual of the genotype AaBb is test crossed, progenies with purple and white in a ratio of 1:9

C. This is an example of complementary gene action

D. The F2 progeny obtained on selfing shows both pruple and white flower in a ratio of 9:7                                            

Which of the following conclusions are correct?