Which of the following is NOT TRUE of

cystic fibrosis?
a. It produces sticky mucus.
b. It leads to increased bacterial lung
infections.
c. The amino acid affected is phenylalanine.
d. It causes insufficient water to leave the
cells.
e. All of these are true.


E

Biology & Microbiology

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In the accompanying figure, the region that is composed of secondary xylem is:


a. outer bark
b. inner bark
c. wood
d. bark
e. vascular cambium

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A(n) ________ mutation is when one or more nucleotide pairs are lost

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The basic mechanism of viral multiplication is similar for all viruses

Indicate whether the statement is true or false

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