Mycobacterium tuberculosis is very difficult to stain because of the
A) presence of ribosomes in the cytoplasm.
B) location of the DNA within the cell.
C) large amounts of a waxy lipid present in its cell wall.
D) lack of a cell wall.
Answer: C
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The intrinsic rate of increase is
A. the rate of population growth under optimal conditions. B. rarely seen. C. independent of predation and competition. D. the unchanging rate of population growth until the carrying capacity is reached. E. the rate of population growth under optimal conditions and rarely seen.
Prokaryotes were split into two domains based on differences in
a. staining characteristics. b. metabolic capabilities. c. rRNA sequences. d. cell membrane properties. e. cell wall composition.
A fire has swept through a mature forest and devastated the area. Virtually all vegetation is burned and considered a complete loss. Foresters, however, realize that plants will soon colonize the area starting the successional process that will eventually restore the forest. Will the pioneer plants that first colonize the area most likely be r-selection strategists or K-selection strategists?
Explain your answer. What will be an ideal response?
Hydrogen bonds
1.occur between non-polar molecules or groups. 2.are as strong as covalent bonds. 3.occur between polar molecules or groups. 4.never occur in water.