Which of the following statements about the import of protein to the nucleus is correct? choose all that apply. a. an nls can be a monopartite or bipartite signal which includes a significant number of basic amino acids. b. gtp is required for an importin to bind to an nls of a protein destined to be localized to the nucleus. c. ribosomal proteins must display an nls to be localized to the nucleus, and an nes to be localized to the nucleolus. d. the recycling of importins back to their original conformation requires gtp hydrolysis in the cytoplasm.

The correct statements are:

•a. An NLS can be a monopartite or bipartite signal which includes a significant number of basic amino acids.

•d. The recycling of importins back to their original conformation requires GTP hydrolysis in the cytoplasm.

The other answers are incorrect because GTP is not required for an importin to bind to an NLS but for the release of importin and an NES or nuclear export signal  is the sequence  in a protein for export from the cell nucleus to the cytoplasm, not to the nucleolus.

vote read

explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.

oak trees? ? what was listed