This feature is an adaptive, as the redistribution of chloroplasts within the cells modulates light absorption and prevents photodamage, diagram shows of chloroplast distribution patterns in Arabidopsis palisade cells in response to different light intensities;

                                        

m) A-low light, B-high light, C-darkness

n) A-high light, B-darkness, C-low light

Based on the above light intensities, each shows different chloroplasts position such as,

i) chloroplasts avoid sunlight by migrating to the side walls of palisade cells

ii) chloroplasts move to the bottom of the cell, although the physiological function of this position is unclear

iii) chloroplasts optimize light absorption by accumulating at the upper and lower sides of palisade cells

Which of the following correct combinations shows light intensities and chloroplast movements?

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#Question id: 1862

#Unit 4. Cell Communication and Cell Signaling

X-linked agammaglobulinemia results from a mutation in:

TLS Online TPP Program

#Question id: 1863

#Unit 4. Cell Communication and Cell Signaling

Di George syndrome results from a defect in:

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#Question id: 1864

#Unit 4. Cell Communication and Cell Signaling

What is the approximate percentage of cases of severe combined immunodeficiency (SCID) due to defects in the Armetis gene?

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#Question id: 1865

#Unit 4. Cell Communication and Cell Signaling

What deficiency is indicated by poor skin test results to a range of microbial antigens such as tuberculin and mumps?

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#Question id: 1866

#Unit 4. Cell Communication and Cell Signaling

What does HIV binds to?

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#Question id: 1867

#Unit 4. Cell Communication and Cell Signaling

Which of the following is a coreceptor for HIV?