A nonfunctional CD4 protein on a helper T cell would result in the helper T cell being unable to

#Question id: 137

#Unit 1. Molecules and their Interaction Relevant to Biology

Disulfide bridges can form in proteins ________.

#Question id: 28057

#Unit 1. Molecules and their Interaction Relevant to Biology

A hydrogen bond to water that is broken during folding and not reformed implies 

#Question id: 3701

#Unit 3. Fundamental Processes

Frederick Griffith accidentally discovered transformation when attempting to develop a vaccine for pneumonia. He injected mice with samples from S-strain (virulent) and/or R-strain (nonvirulent) pneumococci bacteria (Streptococcus pneumoniae). Which of the following results is NOT consistent with Griffith's experiments?

#Question id: 4555

#Unit 3. Fundamental Processes

The σ54-RNA polymerase binds to the glnA promoter but does not melt the DNA strands and initiate transcription until it is activated by

#Question id: 10849

#Unit 10. Ecological Principles

Plasmodium is transmitted from human to human by the bite of a mosquito carrier. In this scenario plasmodium is the ________, the mosquito is the ________, and _______ is the role played by the human.