Which of the following statements about comets is true?
A. Comets are mostly made up of dust p...
Biology, 06.03.2020 14:44 aidanfbussiness
Which of the following statements about comets is true?
A. Comets are mostly made up of dust particles, frozen water and frozen gases. They are usually very easy to see but as
they approach the Sun, these particles condense and become much harder to see
B. Comets are mostly made up of rock. They are usually very easy to see but as they approach the Sun, the rock condenses
and becomes much harder to see.
C. Comets are mostly made up of rock. They are usually very hard to see, but as they approach the Sun, the rock heats up
and becomes much easier to see.
D. Comets are mostly made up of dust particles, frozen water and frozen gases. They are usually very hard to see, but as
they approach the Sun, these particles heat up and become much easier to see.
Answers: 3
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One function of the poly-a tail on eukaryotic mrna sequences is to the mrna be transported from the nucleus to the cytoplasm. prokaryotic mrna also has a poly-a tail. choose the best explanation of the prokaryotic poly-a tail. a. prokaryotic poly-a tails are composed of a different molecular structure compared with eukaryotic poly-a tails. b. prokaryotic poly-a tails have the same functions as eukaryotic poly-a tails, because this process is highly conserved throughout different species. c. prokaryotic poly-a tails aren't important, because prokaryotes don't have nuclei. d. prokaryotic poly-a tails have other functions, because prokaryotes don't have nuclei.
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