Multi-partner associations consisting of a particular fungi and photosynthetic green algae and /or cyanobacteria are called
a. endophytes
b. symbiophytes
c. crustophytes
d. fruticophytes
e. lichens
Answer: e. lichens
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What feature of genetic mutations can eventually lead to the evolution of new species?
A. Mutations always produce harmful effects. B. Mutations never affect protein structure or function. C. Mutations are not a mechanism through which biological evolution occurs. D. Mutations always produce beneficial effects. E. Mutations produce changes in the DNA sequence of a gene.
Which of the following statements about body cells is TRUE?
a. All lymphocytes are leukocytes, but not all leukocytes are lymphocytes. b. All leukocytes are lymphocytes, but not all lymphocytes are leukocytes. c. Leukocyte and lymphocyte are different types of red blood cells. d. Leukocyte and lymphocyte are different names for the same cell. e. MHC proteins are not unique between vertebrate species.
You discover a mutant strain of Neurospora crassa that will not grow on a minimal medium but that will grow on a medium supplemented by the amino acid methionine
How can you determine which step in the methionine synthesis pathway is affected by the mutation?
The _______ of a disease is a measure of how easily the disease is passed from one person to another.
Fill in the blank(s) with the appropriate word(s).