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TLS Online TPP Program

#Question id: 2114

A research team is working on the design of a new drug for the treatment of lung cancer. To be most effective, this drug must specifically enter the cytoplasm of lung cells while not entering the cells of other tissues. Which of the following characteristics would likely enhance the specificity of this drug?

#Zoology

  1. the relative hydrophobicity of the drug molecule

  2. phospholipid composition of lung cell plasma membranes

  3. specificity of the drug molecule for binding to the extracellular matrix of lung cells

  4. similarity of the drug molecule to other molecules normally transported lung cells

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TLS Online TPP Program

#Question id: 4322

#Molecular Biology

If a particular operon encodes enzymes for making an essential amino acid and is regulated like the trp operon, then
TLS Online TPP Program

#Question id: 4323

#Molecular Biology

Muscle cells differ from nerve cells mainly because they
TLS Online TPP Program

#Question id: 4324

#Molecular Biology

The functioning of enhancers is an example of
TLS Online TPP Program

#Question id: 4325

#Molecular Biology

Cell differentiation always involves
TLS Online TPP Program

#Question id: 4326

#Molecular Biology

Which of the following is an example of post-transcriptional control of gene expression?
TLS Online TPP Program

#Question id: 15002

#Genetics

If you performed a dihybrid cross and found that your results were significantly different from the 9:3:3:1 ratio, what would you suspect?