A composite organism consisting of a fungus and a single-celled photosynthetic species is called a ____

a. mycorrhiza
b. rust
c. lichen
d. mycelium
e. chytrid


ANSWER: c

Biology & Microbiology

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The hypothesis that H2 was a key electron donor for energy metabolism in primitive organisms is supported by it being such a common trophic strategy in Aquificae

Indicate whether the statement is true or false.

Biology & Microbiology

Nephrons:

A. extend from the cortex into the medulla. B. are located entirely within the cortex. C. are located entirely within the medulla. D. are located within the renal pelvis. E. None of these answer options is correct.

Biology & Microbiology

When blood calcium levels are high, ____

a. neurons may fire more slowly b. the release of parathyroid hormone would increase c. neurons may fire spontaneously d. the release of parathyroid hormone would decrease e. the reabsorption of calcium from the kidney tubules would increase

Biology & Microbiology

Which choice is an example of "recombinant DNA"?

A) a bacterial plasmid combined with a human gene B) DNA that has been cut with a restriction enzyme C) DNA that has been amplified by PCR D) any DNA that has been removed from a cell

Biology & Microbiology