The red algae are classified as ____.
A. rhodophytes
B. chlorophytes
C. phaeophytes
D. bryophytes
E. pterophytes
Answer: A
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Which of the following must an organism do in order to be living?
a. grow and reproduce b. photosynthesis c. cellular respiration d. meiosis
During development, an XX female embryo will form one of the X chromosomes in each cell into a Barr body. This usually occurs
A) about two weeks after zygote formation. B) by the end of the first trimester. C) at the 16-cell stage. D) in the X that has the most recessive alleles.
Which of the following terms is used to describe the use of computer databases to analyze and organize biological data?
A.) gene sequencing B.) DNA microarrays C.) proteomic studies D.) bioinformatics
Sulfanilamide is an antimicrobial drug that mimics the shape of an important substrate for a particular bacterial enzyme, thereby inhibiting the enzyme. This type of inhibition is known as
A. allosteric inhibition. B. competitive inhibition. C. allosteric activation. D. noncompetitive inhibition. E. feedback inhibition.