A number of nutritional mutant strains were isolated from wild-type Neurospora that responded to the addition of certain supplements in the culture medium by growth ( + ) or lack of growth ( -). Given the following responses for single gene mutations, diagram a metabolic pathway that could exist in the wild-type strain that is most consistent with the data. Indicate where the pathway is blocked in each mutant strain.

#Question id: 11571

#Unit 7. System Physiology – Animal

Which of the following is the most likely explanation for hypothyroidism in a patient whose iodine level is normal?

#Question id: 729

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct about the collagen triple-helix domain

a. is rich in glycine.                             b. is rich in proline.

c. is rich in hydroxyproline.                d. is an alpha helix.

#Question id: 11270

#Unit 10. Ecological Principles

Consumption efficiency is the proportion of production at one trophic level that is eaten by, or ingested, by the next trophic level which of the following is correct statement?

A. Consumption efficiencies of herbivore is higher in ocean than grassland

B. In aquatic ecosystems, production efficiencies of herbivore are greater than carnivores

C. Assimilation efficiencies for carnivores are typically higher than those of herbivores

D. Assimilation efficiency depends on the quality of food eaten and the physiological efficiency of the consumer

#Question id: 12353

#Unit 10. Ecological Principles

#Question id: 23054

#Unit 12. Applied Biology