Practice Questions

TLS Online TPP Program

#Question id: 67

When a region of DNA must be repaired by removing and replacing some of the nucleotides, what ensures that the new nucleotides are in the correct sequence?

#SCPH06 I Botany

DNA cannot be repaired and this explains why mutations occur.
The new nucleotides base pair accurately with those on the complementary strand.
The repair enzyme recognizes the removed nucleotide and brings in an identical one to replace it.
The three-dimensional structure determines the order of nucleotides.

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TLS Online TPP Program

#Question id: 1651

#I Life Science/ Life Sciences Group – I-V

Ig idiotypes are found:

TLS Online TPP Program

#Question id: 5591

#SCPH01 Biochemistry

The first evidence for autonomous specification (“mosaic development”) was discovered in:

TLS Online TPP Program

#Question id: 4326

#SCPH01 Biochemistry

Which of the following is an example of post-transcriptional control of gene expression?

TLS Online TPP Program

#Question id: 5554

#SCPH01 Biochemistry

Even in the absence of sperm, metabolic activity in an egg can be artificially activated by ________.

TLS Online TPP Program

#Question id: 5073

#SCPH01 Biochemistry

The emergence of the polarity of an embryo is the result of: