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52 Cards in this Set
- Front
- Back
meters in one micrometer?
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1 micrometer = 1.0E-6 meters
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Penalty for 2 unexcused absences?
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-10 on final grade
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3 unexcused absences?
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failing grade for the class
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Students must wear what for lab?
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Close-toed shoes and long pants and shirts with sleeves
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3 things disposed of in the broken glass container?
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pipet, wet mounts, broken glass
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light microscope that has two sets of lenses and is used for the observation of small specimens. Can magnify a specimen up to 1000 times
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Compound microscope
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Light microscope that is used for the observation or manipulation of larger or whole specimens at low magnification. Produces a 3D image of the specimen
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Dissecting microscope
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Used to examine the structure by scanning the specimen with a beam of electrons
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Scanning Electron Microscope
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Used to examine inner structure by passing electrons through a section of the specimen
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Transmission electron microscope
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2 kinds of electron microscopes?
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Scanning and transmission
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Calculate the total magnification for a compound microscope with a 10X ocular 30X objective lens
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40X
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What does parfocal mean?
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When an image is focused at scanning power, it will also be in focus at low and high power
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What allows plants to regenerate new tissues, organs, or even whole plants?
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Totipotency
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This chemical promotes shoot development
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Cytokinins
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The chemical promotes root development
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auxins
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The actual process by which the excised plant tissue produces new tissues is called
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organogenesis
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Name the two shapes of calcium oxalate crystals
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raphides, druses
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Steps in micropropagation
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Establishment (step done in class), Multiplication, Rooting, Acclimation
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Name one plant that contains calcium oxalate crystals
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aloe, banana, pineapple, philodendrons, dumbcane
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Bioplastic is more economically friendsly and degrades much faster than traditional plastic (True/False)
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True
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Idioblasts are specialized cells that causes cell damage to the one ingesting them (True/False)
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True
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After the completion of S phase, the number of chromosomes is ___
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doubled
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What causes cancer?
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Oncogenes
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During anaphase, centromeres use spindle fibers to pull apart sister chromatids (True/False)
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True
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Nuclear membrane degrades, spindle fibers being to form and chromosomes condense during what phase?
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Prophase
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What is the difference between cytokinesis in plant cells and animal cells?
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Animal cells have a cleavage furrow and plant cells have a cell wall
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Name the mitotic phases in order
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Interphase, Prophase, Metaphase, Anaphase, Telophase
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Steps to the scientific method?
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Observation, Question, Hypothesis, Prediction, Experiment
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Standardized variable across all groups
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controlled
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Variable manipulated by the experimenter
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Independent
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Variable is the factor that is being measured/tested
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Dependent
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Discrete variables are measured quantitatively and use logical order and numbers (True/False)
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False
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What section of a scientific paper contains the hypothesis?
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Introduction
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What section contains tables and figures?
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Results
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Where are the meanings of the experiment evaluated?
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Discussion
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the pairing of homologous chromosomes into tetrads
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Synapsis
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set of 2 pairs of homologous chromosomes
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tetrad
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random alignment
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Independent assortment
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Natural process by which the organisms with favorable traits (best adapted) are more likely to survive and reproduce than those that do not
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Natural selection
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Requirements for Natural Selection?
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1. genetic variation
2. Variation must be heritable. 3.Variants have increased fitness – they survive and reproduce at a higher rate than non-variants |
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Random fluctuations in the frequency of a character in a small, isolated population
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Genetic Drift
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An error during reproduction… a sudden structural change within a gene (or chromosome) of an organism
Results in the creation of a new character or trait not found in the parents |
Mutation
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, Crossing Over occurs b/w adjacent nonsister chromatids exchange DNA
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Prophase I
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Tetrads line up along equator
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Metaphase I
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when 2 homologous chromosomes move to the same pole during meiosis (anaphase I)
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NONDISJUNCTION
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Nondisjunction disorders
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Down Syndrome (trisomy 21), Tuner Syndrome (X), Supermales (XYY)
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Microscope that does NOT give an internal image
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Scanning Electron Microscope
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Finding total magnification?
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Objective Lens × Ocular lens = Total Magnification
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The 3 Shapes of Bacteria?
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Spirilla- spiral
Bacilli- rod Coccus- spherical |
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plantlets are transferred from sterile medium to soil & allowed to adjust to more natural environmental conditions
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Acclimatization
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developing shoots are transferred to a new growth medium containing auxin to stimulate root formation
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Rooting
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Made from plant starch, cellulose, vegetable oils, or microorganisms
Most are biodegradable |
Bioplastics
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