#Question id: 10461
#Unit 6. System Physiology – Plant
Model of cry1 interactions with COP1/SPA1 in the regulation of photomorphogenesis, what will happen in the dark as well as in the light in wild type condition of cryptochrome?
a) In the dark, COP1/SPA1 acts to degrade transcription factors such as HY5, which is required for photomorphogenesis
b) In the dark, cry1 is activated by phosphorylation and forms a complex with COP1 and SPA1 via the C-terminal domain, preventing them from degrading protein HY5
c) In the light, COP1/SPA1 acts to degrade transcription factors such as HY5, which is required for photomorphogenesis
d) In the light, cry1 is activated directly by blue light and indirectly by blue light induced phosphorylation and forms a complex with COP1 and SPA1 via the C-terminal domain, preventing them from degrading protein HY5
e) In light as well as in dark both case cryptochrome perfom same function such as forming a complex with COP1/ SPA1 thereby promoting an increase in HY5 protein levels and transcription
Which of the following combinations from the above statements of cryptochrome is incorrect?
#Question id: 27506
#Unit 2. Cellular Organization
A DNA with a initial LK no = 100 is change to 95
#Question id: 11025
#Unit 7. System Physiology – Animal
Listed below are the hydrostatic and oncotic
pressures within a microcirculatory bed:
Plasma colloid osmotic pressure = 25 mm Hg
Capillary hydrostatic pressure = 25 mm Hg
Venous hydrostatic pressure = 5 mm Hg
Arterial pressure = 80 mm Hg
Interstitial fluid hydrostatic pressure = −5 mm Hg
Interstitial colloid osmotic pressure = 10 mm Hg
Capillary filtration coefficient = 10 ml/min/mm Hg
What is the rate of net fluid movement across the capillary wall?
#Question id: 1382
#Unit 4. Cell Communication and Cell Signaling
Following statements are regarding to cell-cell and cell–extracellular matrix junctions and their adhesion molecules.
A. Adherens junctions and desmosomes are integrin-containing anchoring junctions that bind the membranes of adjacent cells, giving strength and rigidity to the entire tissue.
B. Hemidesmosomes are cadherin-containing anchoring junctions that attach cells to elements of the underlying extracellular matrix.
C. Integrins are a large family of αβ heterodimeric cell-surface proteins that mediate both cell-cell and cell-matrix adhesions and inside-out and outside-in signaling in numerous tissues.
D. Tight junctions block the diffusion of proteins and some lipids in the plane of the plasma membrane, contributing to the polarity of epithelial cells. They also limit and regulate the extracellular (paracellular) flow of water and solutes from one side of the epithelium to the other.
Which of the following statements are incorrect?
#Question id: 803
#Unit 1. Molecules and their Interaction Relevant to Biology
A single-stranded DNA molecule contains 40 nucleotides and has the sequence 5’-(GA)20-3’. When this single strand binds to a complementary DNA strand to form a B-DNA structure,