D. Is the same number of adenines
Thymines and Adenines will always pair together.
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D. This has to be 20 characters long sooooo there
Rough ER<span> looks like sheets or disks of bumpy membranes while </span>smooth ER<span> looks more like tubes. </span>Rough ER<span> is called </span>rough<span> because it has ribosomes attached to its surface. The double membranes of </span>smooth<span> and </span>rough ER<span> form sacs called cisternae.</span>
Answer:
While flowering plants only use seeds, nonflowering plants use either seeds or spores. Spores are very tiny parts of a plant that can be used to reproduce.
Explanation:
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There are 20 different types of amino acids found in proteins.