What would result if 14CO₂ were incorporated into the TCA cycle via the pyruvate carboxylase reaction.

#Question id: 5039

#Unit 5. Developmental Biology

The process by which developing cells achieve their functional, mature identity as liver, or muscle, or nerve is called:

#Question id: 8296

#Unit 9. Diversity of Life Forms

Giardia intestinalis can cause disease in several different mammalian species, including humans. Giardia organisms (G. intestinalis) that infect humans are similar morphologically to those that infect other mammals, thus they have been considered a single species. However, G. intestinalis has been divided into different subgroups based on their host and a few other characteristics. In 1999, a DNA sequence comparison study tested the hypothesis that these subgroups actually constitute different species. The following phylogenetic tree was constructed from the sequence comparison of rRNA from several subgroups of G. intestinalis and a few other morphologically distinct species of Giardia. The researchers concluded that the subgroups of Giardia are sufficiently different from one another genetically that they could be considered different species.

According to the phylogenetic tree in the figure above, G. intestinalis constitutes a ________ group.

#Question id: 1099

#Unit 4. Cell Communication and Cell Signaling

How does the toxin of Vibrio cholerae cause profuse diarrhea?

#Question id: 21120

#Unit 12. Applied Biology

#Question id: 27530

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the Group 1 with appropriate solution of Group 2

Group 1                                                  Group 2

(1) Agar                                               (P)  Plant cell wall

(2) Raffinose                                       (Q)  Trisaccharides 

(3) Cellulose                                       (R)  Xanthomonas Compestris

(4) Xanthum Gum                             (S) seaweeds