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CAMPSLPS) 2002100-M/J Comprehensive Science 3 [Q4]
Explaining Dark Matter and Dark Energy
Which statements explain current theories about dark energy and dark matter? Check all that apply.
Space that appears empty actually contains dark energy and dark matter.
Dark matter does not emit electromagnetic radiation
Scientists believe dark energy will cause the universe to collapse inward to a single point.
Scientists theorize that dark energy is causing the expansion of the universe to accelerate.
Dark matter includes all of the dust, ice, and debris that scientists observe in black holes.
tists observe in black holes
Intro
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step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.

wegner's theory did not explain how the continents could move

explanation: