#Question id: 10160
#Unit 6. System Physiology – Plant
Which of the following statements about the C4 cycle is true ?
a.) C4 plants uses the enzyme phosphoenolpyruvate carboxylase (PEPCase), rather than rubisco
b.) Unlike rubisco, O2 does not compete with HCO3 − in the carboxylation catalyzed by PEPCase
c.) initial carboxylation catalyzes in bundle sheath cells, four-carbon acids formed and flow across the diffusion barrier to the mesophyll cells
d.) during decarboxylation, releasing CO2 that is refixed by rubisco via the Calvin–Benson cycle
#Question id: 7108
#Unit 5. Developmental Biology
Relative to the primitive streak and Henson's node, somite formation in the chick embryo occurs:
#Question id: 10352
#Unit 6. System Physiology – Plant
which of the following amino acid that participates in the malate–aspartate shuttle to transfer reducing equivalents from the mitochondrion and chloroplast into the cytosol?
#Question id: 26553
#Unit 3. Fundamental Processes
Match the following
#Question id: 1809
#Unit 4. Cell Communication and Cell Signaling
Which of the following statements is TRUE of αβ T-cells?