Which of the following would not be used as a final electron acceptor in anaerobic respiration?
A) oxygen
B) sulfur
C) protons
D) iron
E) nitrogen
A) oxygen
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Which of the following are examples of proteins encoded by oncogenes?
A. genome integrity proteins B. transcription factors C. DNA repair enzymes D. intracellular signaling proteins E. growth factor receptors
Plants that are called C4 plants are better able to utilize ________ than C3 plants.
A. oxygen B. minerals C. water D. carbon dioxide E. chlorophyll
In a class field trip, you scrape what looks like an organism off of a stream rock. Through the semester, with chemical analysis and electron microscopes, you determine that the cell has DNA, RNA, ribosomes, a cell membrane, and cytoplasm. This helps you determine that
A. this is an unusual plant that you collected from the stream. B. this organism you collected is in the Eukarya domain. C. this organism you collected is in the Bacteria domain. D. this organism you collected is in the Archaea domain. E. this is an organism with cells having common features with all life.
Which statement is NOT true about root adaptations in plants?
A. Some plants have very poorly developed roots or none at all. B. Parasitic plants have root adaptations called haustoria that draw nutrients from the host. C. Bacteria of the genus Rhizobium live in root nodules in legumes, producing available nitrogen that the plant uses. D. Some plants, including orchids, require the presence of fungal symbionts to survive. E. Fungal mycorrhizae depend on plants for the fungus's supply of water and minerals.