TLS Online TPP Program

#Question id: 4165


Which is true about proofreading activity during the synthesis of aminoacyl-tRNAs?

#Unit 3. Fundamental Processes
  1. Proofreading is accomplished as an amino acid enters the active site of the enzyme. Incorrect amino acids are rejected before any reaction occurs.

  2. Proofreading occurs just after aminoacyl-adenylate formation.

  3. A separate cytosolic proofreading enzyme catalyzes the hydrolysis of incorrect aminoacyl-tRNAs.

  4. No proofreading activity is necessary due to the high level of specificity of all aminoacyl-tRNA synthetases.

More Questions
TLS Online TPP Program

#Question id: 5371

#Unit 8. Inheritance Biology

The trait represented in the following pedigree (shaded symbols) is known to be inherited as a single dominant gene. Calculate the probability of the trait appearing in the offspring if the first cousins should marry and have children.

TLS Online TPP Program

#Question id: 5372

#Unit 8. Inheritance Biology

Consider the following diagrams, each being a different situation in which an entire gene is represented in a higher organism. In some cases, a point mutation exists (indicated by p). In other cases, a deletion has occurred (indicated by xxxxx), both of which render the gene nonfunctional

Which of the following homozygous cross would produce wild type phenotype?

TLS Online TPP Program

#Question id: 5373

#General Aptitude

The average of first 10 natural number is :

TLS Online TPP Program

#Question id: 5374

#General Aptitude

The average of 11 result is 50 . if the average of first 6 result is 49 and that of last 6 results is 52,find the sixth result .

TLS Online TPP Program

#Question id: 5375

#General Aptitude

A batsman scored an average of 12 runs in 7 innings in a cricket match .he played one more innings and the average , then become 14 the runs he scored in the last innings are.

TLS Online TPP Program

#Question id: 5376

#General Aptitude

There are two classes A and B consisting of 40 and 52 student respectively . If the average of weight of class A is 45kg and that of class B is 40kg.Find the average of weight of all the student of class A and B.