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46 Cards in this Set
- Front
- Back
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The basic structural and physiological unit of all living organisms.
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The cell
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The initial accumulation of oxygen in the atmosphere was the result of photosynthesis from an organism most like modern.
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cyanobacteria
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Scientists group species on an evolutionary tree based on_______.
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Gene Similarities, the fossil record, and anatomical structures.
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The key purpose of any single experiment is to __________.
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Test predictions that are based on hypothesis.
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True or False. In an undisturbed sedimentary rock, the oldest layers lie at the bottom, and successfully higher strata are progressively younger.
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True.
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True or False. Sedimentary rock forms from magma.
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False.
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True or False. Mitochondria and chloroplasts have lost all of their DNA to their host cell.
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False.
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Paramecium bursaria is an extant protist which consumes but does not digest photosynthetic bacteria, suggesting a mechanism for endosymbiosis.
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True.
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There are many similarities between chloroplasts and photosynthetic bacteria.
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True.
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Mitochondria and chloroplasts are thought to be derived from prokaryote ancestors.
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True.
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Rock like structures formed by the oxygen generating cyanobacteria are known as _______.
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stromatolites.
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The evolutionary relationships among organisms is known as ________.
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Phylogeny
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From smallest to largest, name the taxonomic categories.
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Domain Drunk
Kingdom King Phylum Phillip Class Called Organism Ofelia Family For Genus Good Species Sex |
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Group that includes common ancestor and some but not all descendants.
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Paraphyletic.
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True or False. Archaea have peptidoglycan in their cells.
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False.
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True or False. Archaea include species that are obligate anaerobes which produce nearly all of the methane in the atmosphere.
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True.
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True or False. Archaea include species that love heat and acid and could die at 131 degrees F.
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True.
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True or False. Archaea have rRNA that differs as much from bacteria's DNA as it does from that of Eukarya.
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True.
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A bacterial cell gives rise to two genetically identical daughter cells by ______.
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Fission.
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These gram-positive bacteria which form from mycelia like chains of cells were once classified as bacteria. They include bacteria that cause tuberculosis and produce streptomycin.
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Actinobacteria.
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These bacteria are small intracellular parasites that have a unique, complex reproductive cycle and include strains that cause eye infections and venerial disease.
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Chlamydia.
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In order for a prokaryote cell to divide which of the following must occur?
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A reproductive signal, DNA replication, segregation, of DNA, and cytokenesis.
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How does a nucleus in G2 differ from a nucleus in G1?
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The G2 nucleus has double the amount of DNA as the G1 nucleus.
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The basic structure of chromatin has sometimes been referred to as beads on a string of DNA. These beads are called _______.
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Nucleosomes.
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During mitosis and meiosis the chromatin compacts which allows ______ to take place more easily.
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The orderly distribution of genetic material into 2 new nuclei.
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The mitotic spindle is composed of_______.
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Microtubules.
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A major drawback of asexual reproduction is that it______.
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produces a lack of variation among the progeny.
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An indicator of programmed cell death is______.
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neatly fragmented chromatin.
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In vascular plants the dominant life cycle phase is the _______, in nonvascular plants its the ________.
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sporophyte, gametophyte.
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Mosses are dependent on water for reproduction because________.
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sperm must swim through water to reach and fertilize eggs.
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The function of the pollen tube is to________.
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Digest the sporophyte tissue as it elongates, taking the male DNA toward the female gametophyte.
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Vascular plant with naked seeds which develop in female cones.
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Conifers/gymnosperms.
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The pistil (carpel) consists of_______.
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stigma, style, and ovary.
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The ancestor of the animal clade was probably a __________.
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colonial flagellated protist.
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Protostomes would be described as______.
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free floating larvae, anterior brain, development of mouth from blastospore.
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Birds are __________.
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in a monophyletic group that includes lizards, snakes, and crocodiles.
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True or False. Birds are not included in the mammals.
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True.
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Most amphibians like frogs breathe air by_______.
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lungs and thin skin.
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Which of the following features is not found in the chordate lineage?
An external skeleton. Bilateral symmetry. Notochord at stage of development. Dorsal hollow nerve chord. Pharyngeal slits. |
An external skeleton.
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True or False. Deuterosomes and protostomes differ in a number of characteristics and the ablilty to form a blastospore is one of them.
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False.
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Which group of plants lacks vascular tissue?
Angiosperms Bryophytes Gymniosperms Pteridophytes None of these. |
Bryophytes.
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Radiata are_____.
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Protostome animals with radial symmetry.
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Cyanobacteria should not be called "blue green algae" because they_______.
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Do not have chloroplasts.
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Worms would be in which 3 phyla?
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Annelida, Nematoda, Platyhelminthes.
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How old is the earth?
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4.6 bil yrs old
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Miller and Urey's experiments proved that ___________.
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complex organic molecules can form spontaneously under conditions that probably existed on early earth.
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