Which wavelength modulates guard cell osmoregulation by means of its activation of proton pumping, solute uptake, and stimulation of the synthesis of organic solutes;

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#Question id: 16087

#Unit 7. System Physiology – Animal

The sweat glands are activated by

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#Question id: 24257

#Unit 2. Cellular Organization

Choose the incorrect option

a. The nucleosome has an approximate twofold axis of symmetry, called the dyad axis

b. The nucleosome has an approximate tenfold axis of symmetry, divided in two axis

c. DNA exits at 1 o’clock and enters at just short of 11 o’clock on one axis and they change time after 180-degree rotation

d. DNA enters at 1 o’clock and exits at just short of 11 o’clock on one axis and they change time after 180-degree rotation

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#Question id: 32242

#Unit 2. Cellular Organization

Which of the following is a strict requirement for a protein to exit the endoplasmic reticulum (ER)?

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#Question id: 15654

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. Next you isolate a mutation, designated MelB–, which gives uninducible melibiase activity. Mapping experiments show that MelB– is linked to Mel1. Using an F' factor that carries the chromosomal region surrounding Mel1, you perform the following genetic tests:

                      

Describe the basic genetic properties of the MelB– mutation?

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#Question id: 5311

#Unit 11. Evolution and Behavior

Which of the following conclusions has led to the comparison between the number of human genes and those of other animal species?