#Question id: 1022
#Unit 4. Cell Communication and Cell Signaling
Why are we concerned at all with monitoring emerging/reemerging diseases?
#Question id: 16954
#Unit 4. Cell Communication and Cell Signaling
match the following
|
|
|
|
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 |
|
C. reticular cells |
3. send processes connecting cells to bone and blood vessels, and,
unexpectedly |
|
D. sympathetic neurons |
4. can control the release of hematopoietic cells from the bone
marrow. |
#Question id: 3014
#Unit 2. Cellular Organization
Regarding prokaryotic reproduction, which statement is correct?
#Question id: 369
#Unit 1. Molecules and their Interaction Relevant to Biology
Calculate the pH of a 2.0 L solution containing 10 mL of 5 M acetic acid and 10 mL of 1 M sodium acetate. (pKa = 4.76)
#Question id: 10499
#Unit 6. System Physiology – Plant
Stomata from intact, attached leaves of Arabidopsis illuminated with blue, red, and green light in a growth chamber, increases and decreases their aperture in response to light.
Find the CORRECT statements from the above graph.
i) Stomatal aperture increases when the green light is turned off, and close when the green light is turned on again
ii) Stomata from the phototropin-less double mutant phot1/phot2 respond to blue light and open further when green light is turned off
iii) stomata from the zeaxanthin less mutant npq1 do not respond to blue light and least effect to opening of the stomata further when green light is turned off
iv) the npq1 mutant and phot1/phot2 double mutant response indicate that the green reversal of the blue-light response requires zeaxanthin but also phototropin