The chemical and breakdown products of herbicide DDT cause eggshell thinning and population declines in multiple North American and European bird of prey. They are remediated by 

TLS Online TPP Program

#Question id: 1594

#XL - S Microbiology

HIV targets include all of the following except

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#Question id: 2089

#XL - S Microbiology

What type of single-pass membrane protein would contain a hydrophobic membrane spanning alpha-helix?

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#Question id: 19601

#XL - P Chemistry

What is the entropy change (in JK-1 mol-1) when 1 mole of ice is converted into water at 0℃? (The enthalpy change for the conversion of ice to liquid water is 6.0 kJ mol-1 at 0℃)

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#Question id: 2068

#XL - S Microbiology

Which of the following molecules dramatically increases the rate of diffusion of water across cell membranes?

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#Question id: 11145

#XL - T Zoology

Two fundamental concepts about the ion channels of a "resting" neuron are that the channels ________.