Clinically, the cell wall is important because it contributes to the ability of some species to cause disease and is the site of action of some antibiotics. In addition, the chemical composition of the cell wall is used 

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#Question id: 14887

#Unit 4. Cell Communication and Cell Signaling

Secondary lymphoid organ are typically compartmentalized into T-cell areas and B-cell areas, these cells activity are separated  into distinct microenvironments such as

a) T cells are found in the paracortex of the lymph nodes

b) B cells are organized into follicles cells

c) B cells are found in the periarteriolar sheath of the spleen.

d) T cells are found in the periarteriolar sheath of the spleen.

Which of the following is the correct microenvironments of the cells ?

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#Question id: 14888

#Unit 4. Cell Communication and Cell Signaling

Given below are some cytokines and stimulated cell lines ;

Which one of the following is the correct match between the Interleukines and cell lines ?

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#Question id: 14889

#Unit 4. Cell Communication and Cell Signaling

If we provide  the Ikaros signals to the HSCs cell  is converted into

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#Question id: 14890

#Unit 4. Cell Communication and Cell Signaling

In bone marrow, stem cells are committed to different lineages. Factors that stimulate colonies of these different lineages are interleukin-3 granulocyte- macrophage colony stimulating factor (GM-CSF)

A) Granulocyte colony stimulating factor ( G-CSF )and 

B) Macrophage colony- stimulating factor (M-CSF) are formed;

i) Natural killer cells

ii) Monocytes

iii) Granulocytes

iv) Neutrophills

Find out the correct combination of these macrophages;

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#Question id: 14899

#Unit 6. System Physiology – Plant

The energy required for active transport is often provided by the hydrolysis of ATP. In plants we can study the dependence of the membrane potential on ATP by observing the effect of cyanide (CN–), What wil be the effect of cyanide(Cn-),

a.) Cyanide rapidly poisons the mitochondria as ATP synthesis is inhibited, the membrane potential falls below -50mV

b.) Cyanide inhibits the electron transport but not inhibit the ATP synthesis, the membrane potential positive

 c.) Cyanide inhibits the electrogenic ion transport the pH of the external medium increases while the cytosol becomes acidic because H+ remains inside the cell

 d.) Cyanide inhibits the electrogenic ion transport the pH of the external medium acidic while the cytosol becomes alkaline because H+ remains outside of the cell

Which of the following statements regarding effect of cyanide is CORRECT? 

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#Question id: 14900

#Unit 6. System Physiology – Plant

polymer-trapping model explains symplastic loading in plants, This model states that the sucrose diffussion takes place through cell to cell via plasmodesmata; which of the following prediction about the diffusion mechanism is INCORRECT?