Which of the following is not a characteristic of DNA?
A) complementarity
B) composed of nucleotides
C) contains ribose
D) antiparallel strands
E) double-stranded
C) contains ribose
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Anabolic-androgenic steroids are ____
a. synthetic forms of testosterone b. synthetic forms of estrogens c. used to treat early puberty d. natural variants of testosterone e. natural variants of estrogen
What are bacteriophages?
a. a hybrid between a virus and a bacterium b. viruses that set in as secondary infections after bacteria c. a classification of viruses that are infected by bacteria d. a classification of viruses that only infect bacteria
Duplicated chromosomes linked together at their centromeres at the beginning of meiosis are appropriately called what
kind of chromatids? a. mother b. parallel c. sister d. homogenous e. haploid
What does tonoplast refer to?
a. the plant nuclear envelope b. the cell wall c. a chloroplast d. the vacuolar membrane