#Question id: 2122
#XL - S Microbiology
The inner (plasma) membrane of E. coli is about 75% lipid and 25% protein by weight. How many molecules of membrane lipid are there for each molecule of protein? (Assume that the average protein is Mr 50,000 and the average lipid is 750.)
#Question id: 8713
#XL - T Zoology
Which statement represents the best explanation for the observation that the nuclear DNA of wolves and domestic dogs has a very high degree of sequence homology? Dogs and wolves ________.
#Question id: 1584
#XL - S Microbiology
Which cell type interacts with both the humoral and cell-mediated immune pathways?
#Question id: 20050
#XL - P Chemistry
#Question id: 11382
#XL - R Botany
Ecologist has proposed following explanation to lead biodiversity at tropic.
a) Higher productivity in the tropics allows for more species
b) Environments are more stable and predictable in the tropics, with fairly constant temperatures and rainfall levels year-round
c) Predators and pathogens limit competition in the tropics, which allows more species to coexist
d) High evolutionary speed at tropic than temperate