Phosphorus, which is often a limiting nutrient in ecosystems, is important because it
A) is found only in sedimentary rocks.
B) is part of the hydrologic cycle.
C) evaporates quickly.
D) is necessary for the production of cellulose so that autotrophs can grow and provide food for heterotrophs.
E) is needed for molecules such as adenosine triphosphate (ATP), cell membranes, and nucleic acids.
E
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Match the following items with the correct phrases.
_______1. Phenylethyl alcohol agar and Thayer-Martin agar. _______2. MacConkey agar and mannitol salt agar. _______3. Sabouraud dextrose agar. _______4. Blood agar. a. enriched and differential b. enriched and selective c. selective and differential d. selective only e. differential only
How do researchers in the metagenomics sector operate?
A) They study Mendelian traits in children. B) They link diseases by shared gene expression. C) They detect mutations in the protein encoding part of an individual's genome by using powerful algorithms. D) They collect and sequence DNA, then consult databases of known genomes to imagine what the organisms to which the DNA belongs might be like.
Genetic markers that distinguish a self cell from a foreign invader are typically ________.
A. polysaccharides B. proteins or glycoproteins C. DNA or RNA D. lipids or lipoproteins
Inertia
What will be an ideal response?