A decline in __________ is an indication that a negative environmental change is occurring
Fill in the blank(s) with the appropriate word(s).
ANS: indicator species
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Organelles used to in cell division are the
a. cilia. b. flagella. c. centrioles. d. microfilaments. e. Golgi bodies.
A student is observing microorganisms in a sample of pond water. One organism of interest has an obvious nucleus, small oval structures containing a green pigment, and does not appear to be motile. In which of the following groups would this microbe most likely be classified?
A. Eukaryotes (Protozoa) B. Eukaryotes (Fungi) C. Archaea D. Eukaryotes (Algae) E. Bacteria
The chemical group box 1 in the accompanying figure is a:
a. pyrimidine. b. purine. c. phosphate. d. amino acid. e. covalent bond
If you carve your initials in the trunk of a tree, will they move up as the tree grows?
A) Yes. A tree elongates from the ground up. B) Yes. Secondary growth will cause them to move up. C) No. Elongation occurs just below the tips of growing stems in the apical meristems. D) No. Secondary growth continues in all parts of a plant throughout its life.