#Question id: 16954
#Unit 4. Cell Communication and Cell Signaling
match the following
|
|
|
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A. endosteal niche |
1. versatile cells that both generate bone and control the
differentiation of HSCs |
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B. osteoblasts |
2. line the blood vessels and also regulate HSC differentiation |
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C. reticular cells |
3. send processes connecting cells to bone and blood vessels, and,
unexpectedly |
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D. sympathetic neurons |
4. can control the release of hematopoietic cells from the bone
marrow. |
#Question id: 23497
#General Aptitude
#Question id: 10283
#Unit 6. System Physiology – Plant
How to Phosphofructokinase-1 (PFK-1) and Fructose 1,6-Bisphosphatase are reciprocally regulated ?
a) ATP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate
b) citrate is also an allosteric regulator of PFK-1, high citrate concentration increases the inhibitory effect of ATP
c) FBPase-1, is strongly inhibited (allosterically) by AMP; when the cell’s supply of ATP is low (corresponding to high AMP), the ATP-requiring synthesis of glucose slows
d) AMP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate
Which of the following statements of regulation of enzyme is correct?
#Question id: 22938
#Unit 5. Developmental Biology
#Question id: 1583
#Unit 4. Cell Communication and Cell Signaling
These cells are involved in cell-mediated immunity and destroy virally infected cells: