Answer the following statements true (T) or false (F)

1. All tissues are composed of cells.
2. The capacity to maintain a fairly constant body temperature is a homeostatic process.
3. A community is composed of different populations of animals and plants.
4. A defining characteristic that distinguishes prokaryotic and eukaryotic organisms is the lack of cell structure in one versus the other.
5. The modification of a limb that was used for walking in a pre-existing ancestor to one that is used as a wing for a species today is called proteomics.


1. T
2. T
3. T
4. T
5. F

Biology & Microbiology

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The recombinant virus assay (RVA) uses which type of amplification methodology?

a. Transcription-mediated amplification (TMA) b. Nucleic acid sequence-based amplification (NASBA) c. Strand displacement amplification (SDA) d. Reverse transcription polymerase chain reaction (RT-PCR)

Biology & Microbiology

Members of this phylum have radial symmetry, and use their two tentacles to capture prey. They have

eight longitudinal plates of cilia that they use for movement, making them the largest animals to use cilia as their primary means of locomotion.

a. Nematoda b. Cnidaria c. Porifera d. Rotifera e. Ctenophora

Biology & Microbiology

To overcome the water/salt balance problem, fish have specialized cells that can either take in salts or excrete salts that are located in their

a. kidneys. b. lungs. c. gills. d. pharynx. e. skin.

Biology & Microbiology

__________ that impart greater __________ to an individual become more common in a population

over generations, compared with less competitive forms. Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology