Intervening sequences that are transcribed, but not translated into protein are called

A. exons.
B. introns.
C. spliceosomes.
D. transposons.
E. transcription factors.


B. introns.

Biology & Microbiology

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Escherichia coliĀ O157:H7 is a major cause of hemorrhagic colitis in the United.States.

Answer the following statement true (T) or false (F)

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Vascular tissue cells that join end to end in tubelike columns are known as ____

a. sclerenchyma b. tracheids c. collenchyma d. parenchyma

e. vessel elements

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The idea that geologic processes have formed Earth's surface by repeating the same actions over and over is known as

____. a. the theory of catastrophism b. plate tectonics c. continental drift d. the theory of uniformity e. the theory of relativity

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________ is the ingestion of large molecules and foreign substances through the phospholipid membrane

Fill in the blank(s) with correct word

Biology & Microbiology