When Lucifer yellow, a small dye, is injected into a neuron of the retina, neighboring neurons become rapidly labeled. If the retina is incubated in dopamine prior to Lucifer yellow injection, only the injected neuron becomes labeled. These findings suggest which of the following?

I. Neurons of the retina communicate via gap junctions.

II. Dopamine is transferred between cells via gap junctions.

III. Dopamine decreases the permeability of gap junctions.

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#Question id: 10955

#Unit 7. System Physiology – Animal

A 2-year-old boy bruises easily and has previously had bleeding gums. The maternal grandfather has a bleeding disorder. His physical examination shows several small bruises on the legs. Of which coagulation factor would you suspect this patient to be deficient?

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#Question id: 10573

#Unit 10. Ecological Principles

Which of the following was shown continuous iteroparity life history strategy?

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#Question id: 19468

#Unit 12. Applied Biology

Glyphosate is extensively and rapidly metabolised by which enzyme that breaksdown glyphosate into glyoxylate and aminomethyl phosphonic acid

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#Question id: 582

#Unit 1. Molecules and their Interaction Relevant to Biology

When two different substrates react to form two different products, the rate constants for each separate substrate can be determined by

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#Question id: 11076

#Unit 7. System Physiology – Animal

Which of the following will decrease pulmonary blood flow resistance?