Why do slime molds represent a transitional life-form?
What will be an ideal response?
ANS:
Slime molds are sometimes single cellular and sometimes multicellular, therefore they represent the transi-tion from single-cell to multicellular organisms. In addition, when slime molds become multicellular, the single cells differentiate into different types of cells with different roles, as are found in most multicellular organisms.
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Which of the following statements concerning the microbial loop is not true?
A. Microbes consume dissolved organic matter. B. Microbes constitute particulate organic matter for zooplankton consumption. C. Marine viruses contribute to the production of dissolved organic matter. D. All of the choices are correct.
Four of the five answers listed below are factors that affect population size. Select the exception
a. births b. distribution c. emigration d. immigration e. deaths
contains enzymes that transfer hydrogen from various substrates to oxygen, producing
A. lysosome B. vacuole C. mitochondrion D. Golgi apparatus E. peroxisome
Lagging strand synthesis is _ (blank) _ because it is replicated with a series of Okazaki fragments.
a. antiparallel b. bidirectional c. semiconservative d. continuous e. discontinuous