#Question id: 2022
#Unit 4. Cell Communication and Cell Signaling
Which one of the following is not true for class 1 MHC protein?
#Question id: 4709
#Unit 11. Evolution and Behavior
The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.
In Darwin's tree of life, each fork in the tree represents ________.
#Question id: 4945
#Unit 11. Evolution and Behavior
Which is a defining characteristic that all protobionts had in common?
#Question id: 14753
#Unit 6. System Physiology – Plant
#Question id: 10350
#Unit 6. System Physiology – Plant
Ammonium can be assimilated via an alternative pathway rather than primary pathway which involves the sequential actions of glutamine synthetase(GS) and glutamate synthase(GOGAT), these alternative pathway catalyzes by enzyme known as,