At which stage of mitosis are chromosomes photographed in the preparation of a karyotype?
A) prophase
B) metaphase
C) anaphase
D) telophase
E) interphase
Answer: B) metaphase
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Which of the following represent possible functions for a protein folding domain (choose all that are applicable)?
A. catalysis B. ligand binding C. storage of genetic information D. transfer of an amino acid to a ribosome E. transport of molecules across a membrane
Chlorination alone will usually suffice to inactivate viruses present in drinking water.
Answer the following statement true (T) or false (F)
Which of the following is NOT a chelicerate?
a. tick b. mosquito c. spider d. horseshoe crab e. scorpion
Many of the organic compounds essential for life, such as amino acids and nucleotides, could NOT
assemble spontaneously in the presence of a. hydrogen. b. free oxygen. c. carbon dioxide. d. nitrogen. e. argon.