Amniocentesis is not performed on mothers over the age of thirty-five
a. True
b. False
Indicate whether the statement is true or false
False
Biology & Microbiology
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Restriction enzymes cut double-stranded DNA
a. between genes. b. at specific base sequences c. between bacterial and viral DNAs. d. between purines and pyrimidines. e. between promoter and operator DNA sequences.
Biology & Microbiology
Shoots and roots consist of __________,
__________, and __________ tissue systems. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
________ are tiny chambers within the lungs that allow for gas exchange
Fill in the blank(s) with correct word
Biology & Microbiology
Which of these molluscs commonly have a hinged shell?
A) gastropods only B) bivalves only C) cephalopods only D) gastropods and bivalves
Biology & Microbiology