Which of the following elements is(are) important in the transport of electrons? Select all correct answers

A. sulfur
B. iron
C. manganese


Answer Key: A,B

Biology & Microbiology

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On which body segment are arthropod wings attached?

A) head B) abdomen C) thorax D) evenly split between the abdomen and thorax

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Which of the following represents genes that have the potential to mutate and cause cancer?

a. proto-oncogenes b. transgenes c. oncogenes d. tumor suppressor genes

Biology & Microbiology

If the decolorizer is not left on long enough in the Gram-staining procedure, gram-positive organisms will be stained ________ and gram-negative organisms will be stained ________.

A. purple; colorless B. purple; purple C. purple; pink D. pink; pink

Biology & Microbiology

Which lineage of Cnidarians exist only as polyps as adults, build calcium carbonate exoskeletons, and have a mutualistic relationship with photosynthetic protists?

a. Scyphozoa b. Anthozoa c. Cubozoa d. Hydrozoa

Biology & Microbiology