Which one of the following is NOT a possible reason to explain why organisms would stop exponential growth?
a) Accumulation of waste products
b) Exhaustion of nutrients
c) Lack of available space
d) Bacteria becoming dormant
Ans: d) Bacteria becoming dormant
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Darwin developed his theory of natural selection despite having an incomplete and/or inaccurate knowledge base from which to work. Which of the following were problems for Darwin?
A) the source of variations in populations B) an understanding of inheritance patterns from one generation to the next C) The accepted age of the Earth was far too young to allow for the gradual changes Darwin envisioned. D) All of the above.
A pharmaceutical company has developed a new compound that is well tolerated by the body and inhibits the sterol ergosterol synthesis. Screening of this anti-infectious agent activity should be directed toward
A. Viruses B. Rickettsia species C. Fungi D. Bacteria E. Chlamydia species
photosynthesis
What will be an ideal response?
The organisms believed to be the first to use two different photosystems in a single photosynthetic electron-transport chain are the:
A. yeast. B. archaea. C. cyanobacteria. D. algae. E. green plants.