Chloroplast movement is widespread among algae, mosses, and leaves of higher plants, what will be the orientation of chloroplast in dark as well as in light?

a.) In dark, chloroplasts gather at the cell surfaces parallel to the plane of the leaf so that they are aligned perpendicularly to the incident light

b.) Under high light, , the chloroplasts move to the cell surfaces that are parallel to the incident light, thus avoiding excess absorption of light

c.) the orientation of the chloroplasts in the dark is such that maximizes absorption of light

d.) the orientation of the chloroplasts in the high light is such that maximizes absorption of light

Which of the following statements is correct?

#Question id: 17672

#Unit 9. Diversity of Life Forms

#Question id: 5940

#General Aptitude

The day on April of a year is the same day on what date of the same year?

#Question id: 2192

#Unit 2. Cellular Organization

Site-directed cross-linking is a technique that gives insight into what property of integral membrane proteins?

#Question id: 7265

#Unit 5. Developmental Biology

Following statement regarding to the cascade of regulated RNA splicing controls drosophila sexual differentiation.

A. The Sex-lethal (Sxl) protein, encoded by the sex-lethal gene, is the first protein to act in the cascade and present only in female embryos.

B. Early in development, the Sxl gene is transcribed from a promoter that functions only in male embryos.

C. Later in development, this male-specific promoter is shut off, and another promoter for sex-lethal becomes active in both male and female embryos.

D. In male embryos, however, in the absence of early Sxl protein, exon 3 of the sex-lethal pre-mRNA is spliced to exon 2 to produce an mRNA that contains a stop codon early in the sequence.

Which of the following is correct?

#Question id: 11263

#Unit 10. Ecological Principles

Studies of parasitism of kentucky warblers by brown-headed cowbirds have shown that fragmentation has ____________the rate of parasitism because of ____________ edge habitat and ____________ habitat quality.