Archaea (formerly known as archaebacteria) is one of the three major divisions of living organisms; the other two are eubacteria and eukaryotes. Nanoarchaeum equitans is in the Archaea domain and has one of the smallest genomes known, about 0.5 Mb
How can an organism complete its life cycle with so little genetic material?
Such organisms are usually parasites or symbionts and extract many life-supporting materials from their host.
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Which of the following is not an example of facilitated diffusion?
A) GLUT1 glucose transporter B) anion exchange protein C) aquaporins D) channel proteins E) oxygen transport
The tangled mass or tissue-like aggregation in a mold is called a ________.
A. thallus B. hypha C. mycelium D. hyphae
This primate is a Philippine tarsier, which has a tail longer than its body, and a brain about the same size of one of its eyes. Tarsiers have the largest eyes relative to their body size of any mammal, and it uses them to hunt the insects, lizards, and small birds that make up its diet. How is the Philippine tarsier classified?
a. Dermopterans
b. Strepsirrhines
c. Haplorhines
d. Catarrhines
To conserve precious salts, freshwater fish
A) drink large amounts of water and produce small amounts of urine. B) drink almost no water and produce large amounts of dilute urine. C) excrete salt ions and small amounts of urine. D) consume salt ions in food and eliminate water by osmosis.