#Question id: 8850
#XL - R Botany
Whatever its ultimate cause(s), the Cambrian explosion is a prime example of
#Question id: 2668
#XL - T Zoology
The toxic shock syndrome toxin is produced by some Salmonella species when there is not sufficient iron present. When iron is present, it prevents transcription of the TSS-toxin gene. Iron therefore serves as __________.
#Question id: 17998
#XL - S Microbiology
#Question id: 11384
#XL - R Botany
Two islands, P and Q, are similar in habitat and other features. They are 100 and 200 km2 in size respectively, but have the same number of species. Which of the following statements can independently explain this observation?
(i) P is closer to the mainland than Q
(ii) P is further away from the mainland than Q
(iii) P has higher speciation rates than Q
(iv) P has lower speciation rates than Q
#Question id: 1389
#XL - S Microbiology
Why has C. elegans proven to be a useful model for understanding apoptosis?