A tree in your backyard is home to robins, squirrels, beetles, and lichens. Together all these organisms compose a/an:
A) niche. B) biosphere. C) community. D) organism. E) population.
Answer: C
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Which of the following statements about the cell wall is FALSE?
A. The cell wall constitutes the ECM of plants. B. The cell wall is composed predominantly of proteins. C. The cell wall provides protection, rigidity, and shape to plant cells. D. The cell wall is composed of two distinct layers. E. The cell wall is composed mainly of carbohydrates.
Kinesin is a motor molecule that is characterized by
A) activation of sliding in flagellar microtubules. B) sliding along actin in sarcomere. C) motion toward the "plus" end of the microtubule. D) motion along actin filaments. E) motion toward the "minus" end of the microtubule.
If a lump on a breast disappears following needle aspiration, it was most likely a _____.
A. fibroadenoma B. cyst C. gland D. malignant tumor
What process converts the mRNA "message" into a sequence of amino acids?
A. transcription B. replication C. mitosis D. amino acid synthesis E. translation