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Germs 101 Exam #1 Questions And Accurate Answers Graded A+
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Germs 101 Exam #1 Questions And AccurateAnswers Graded A+
Microbes
A microorganism, esp. a bacterium causing disease or fermentation i.e. bacteria,
single-celled eukaryotes, fungi, and viruses
Scientific Process
1. Scientific method
2. Peer review & replication
3. Professional consensus
Scientific Method
1. Observations
2. Hypothesis
3. Predictions
4. Data collection
5. Interpretation
6 characteristics of life:
1. Reproduction & Heredity
2. Individual growth
3. Metabolic activity
4. Response to light & chemical stimuli
5. Cellular structure
6. Cellular transport/nutrients
Taxonomy
The scientific study of how living things are classified, according to similarity or
"relatedness" i.e. often traits, appearance, and behaviours 7 categories of
classification: Kingdom, Phylum, Class, Order, Family, Genus, Species Binomial
, Nomenclature A universal system of naming species that reflects their taxonomic
organization Genus, Species i.e. Genus Species or G. Species -Always italicized or
underlined Evolutionary Tree A branching diagram that reflects evolutionary
relationships among groups of organisms Robert Hooke -Helped invent the compound
light microscope
- 1665, discovered cells
Compound light microscope (1600's)
A microscope that allows light to pass through a specimen and uses two lenses to form
an image
- Magnification often 10X - 400X
- 1,000X - 2,000X with oil immersion
Antony Van Leeuwehoek
- 1674, discovered single-celled eukaryotes
- 1676, discovered the first bacteria
3 traits shared amongst all cells:
1. Organic molecules
2. Cell membranes
3. Uses DNA to store genetic information
Organic molecules
Lipids, carbohydrates, nucleic acids
3 Characteristics that vary among cell types:
1. Eukaryotes
2. Prokaryotes
3. Archaea
Eukaryotes
- DNA in nucleus
- Larger size
- Have organelles
Prokaryotes
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