The xylem is made from ________.
A. intercellular spaces between cells
B. tubular living cells
C. dead, hollow cells
D. elongated living cells
Answer: C
Biology & Microbiology
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The polymerase chain reaction (PCR) can detect as few as 10 toxin-producing Escherichia coli in a population of 100,000 microorganisms isolated from soft cheese samples.
Answer the following statement true (T) or false (F)
Biology & Microbiology
The ovarian structure that secretes the most estrogen and progesterone after ovulation is the _____.
A. follicle B. corpus luteum C. oviduct D. endometrium
Biology & Microbiology
The breakdown of complex organic compounds into simpler ones is called
a) catabolism. b) anabolism. c) photosynthesis. d) oxidation.
Biology & Microbiology
Which of the following is not produced by the pancreas?
A. lipase B. bile C. amylase D. trypsin E. sodium bicarbonate
Biology & Microbiology