Practice Questions

TLS Online TPP Program

#Question id: 2850

CCA-adding enzymes add a specific sequence without a template because

#Unit 2. Cellular Organization

CCA-adding enzymes have two active site that uses a similar two-metal ion mechanism of catalysis
It only recognise A and C
It only recognise G and U
Specificity for the addition of C versus A is not controlled by changes in the active site as each base is added

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TLS Online TPP Program

#Question id: 5786

#Unit 8. Inheritance Biology

A mutation causing an abnormality in presenilin that disrupts amyloid production or function has been associated with

TLS Online TPP Program

#Question id: 5787

#Unit 8. Inheritance Biology

A spontaneous mutation usually originates as an error in

TLS Online TPP Program

#Question id: 5788

#Unit 8. Inheritance Biology

The ____ gene has one of the highest mutation rates known.

TLS Online TPP Program

#Question id: 5789

#Unit 8. Inheritance Biology

Which of the following defects causes ataxia telangiectasis?

TLS Online TPP Program

#Question id: 5790

#Unit 8. Inheritance Biology

The codon for leucine is CUC. How many different amino acids could possibly result from single-base substitutions?

TLS Online TPP Program

#Question id: 5792

#Unit 8. Inheritance Biology

A frameshift mutation