Practice Questions

TLS Online TPP Program

#Question id: 71

Which of the following is not the priority rule for R, S Configuration?

#Biochemistry

If the four atoms attached to the chiral center are all different, priority depends on atomic number, with the atom of lower atomic number getting lower priority.
If the two atoms attached to chiral centers are same, the atoms attached to each of these first atoms are compared
When there is a double bond or triple bond, both atoms are considered to be duplicated or triplicated
If the four atoms attached to the chiral center are all different, priority depends on atomic number, with the atom of higher atomic number getting lower priority.

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TLS Online TPP Program

#Question id: 4314

#Molecular Biology

A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. Some time later, she finds that the introduced strand separates into single-stranded RNAs, one of which is degraded. What does this enable the remaining strand to do?

TLS Online TPP Program

#Question id: 4315

#Molecular Biology

A researcher introduces double-stranded RNA into a culture of mammalian cells and can identify its location or that of its smaller subsections experimentally, using a fluorescent probe. When she finds that the introduced strand separates into single-stranded RNAs, what other evidence of this single-stranded RNA piece's activity would she find?

TLS Online TPP Program

#Question id: 4316

#Molecular Biology

Which of the following processes do normal proto-oncogenes typically exhibit?

TLS Online TPP Program

#Question id: 4317

#Molecular Biology

Which of the following functions does the product of the p53 gene carry out?

TLS Online TPP Program

#Question id: 4318

#Molecular Biology

Which of the following statements correctly describes a characteristic of tumor-suppressor gene?