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Bio Test 2 Review

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redjet's version from 2010-12-15 11:46

Section 1

Question Answer
TIME TABLEok.
Which of the following could be seen in the Mesozoic, but not the Paleozoic -- (1) lots of flowering plants (2) a diversity of mushrooms (3) gymnosperms (4) high levels of photosynthesis(3) gymnosperms
Which of the following tell you that you're in the Cenozoic era? (1) water lily floating in a pond (2) bee pollinating flower (3) many birds flying (4) rabbit eating a daisy (5) green ferns with dragonflies hovering above them(4) rabbit eating a daisy; rabbits and hares evolved at the beginning of the Cenozoic era
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Section 2

Question Answer
Which of the following is an example of homoplasy -- (1) fur in bears and seals (2) dorsal fins in dolphins and ichthyosaurs (3) cells in flowering plants and algae (4) scales in snakes and lizards(2) dorsal fins in dolphins and ichthyosaurs, b/c they evolved separately
How did bacteria change Earth's atmosphere to enable aerobic respiration?Oxygenic photosynthesis by cyanobacteria dramatically increased the amount of oxygen in the atmosphere
Given a chemoorganoheterotrophic bacteria, what would you use as a source of energy for it?sugar
Why was the Cambrian explosion so important?b/c there was an explosion in diversity among animals
Which of the following key adaptations is found in many animals from the Burgess Shale fauna but not found in the Doushantuo and Ediacaran faunas? (1) multicellularity (2) burrow formation (3) segmentation (4) hard mouthparts(4) hard mouthparts
what is the major goal of cell respiration?produce ATP
What was the largest extinction?Permian
Why would gene duplication events, such as those seen in the Hox gene complex, set the stage for adaptive radiation?One copy of a gene can perform the original function while other copies are available to take on new functions
What do Bacteria have in common with Archaea but not with Eukarya?absence of (membrane-bound) nucleus
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Section 3

Question Answer
You found a new prokaryote. Why do you think it's a cyanobacterium? -- (1) you determine it can cause Lyme disease (2) it lacks cell walls (3) it is able to form colonies and produce oxygen (4) it is an endosymbiont(3) it is able to form colonies and produce oxygen
Which of the following groups is characterized by an unusual corkscrew shaped flagella contained w/in a structure called the outer sheath? -- (1) Spirochetes (2) Proteobacteria (3) Firmicutes (4) Chlamydiales (5) Euryarchaeota(1) Spirochetes
What organisms are the most numerous on earth?prokaryotes!
A bacterium oxidizes inorganic molecules with high potential energy; it also makes ATP by cell respiration with inorganic compounds serving as the electron donor. It is most likely a... (1) chemoorganotroph (2) phototroph (3) chemolithotroph(3) chemolithotroph
Why are bacteria used to clean up oil spills?b/c they can use petroleum as an electron donor
Bacteria are {}phyleticmonophyletic
Which taxon makes yogurt? (1) Firmicutes (2) Spirochetes (3) Proteobacteria (4) Chlamydiales (5) Euryarchaeota(1) Firmicutes
Which taxon includes Rhizobium root nodules? (1) Firmicutes (2) Spirochetes (3) Proteobacteria (4) Chlamydiales (5) Euryarchaeota(3) Proteobacteria
Which taxon includes the organisms with spores filled w/ bacteria?(3) Proteobacteria
Which of the following is most likely to lead to PSP (paralytic shellfish poisoning)? (1) dinoflagellates (2) Giardia (3) Plasmodium (4) Toxoplasma (5) diatoms(1) dinoflagellates
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Section 4

Question Answer
Which of the following eukaryotic lineages contains the organism that causes Malaria? (1) Excavata (2) Rhizaria (3) Amoebozoa (4) Alveolata(4) Alveolata
Which of the following eukaryotic lineages contains a group that forms huge supercells for dispersal?(3) Amoebozoa
Which of the following statements is consistent with the assertion that protists are paraphyletic? (1) Protists all share a common set of synapomorphies (2) Protists do not share a single common ancestor (3) Some protists evolved into nonprotist groups (3) some protists evolved into nonprotist groups
Which of the following is true of all protists? (1) smaller than animal cells (2) have a cell wall (3) photosynthetic (4) unicellular (5) contain a nucleus(5) contain a nucleus
If a protist obtains a chloroplast via secondary endosymbiosis, how could you tell?the chloroplasts have 3 or 4 membranes
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