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15 Cards in this Set

  • Front
  • Back
Basic Concept
Scientific Method
1. Observe phenomena and formulate testable and falsifiable hypothesis.
2. Test hypotheses, collect data, and analyze statistically.
What is life?
Characteristics: metabolism, reprocution, growth, movement, responsiveness, complex organization.
Evolution
Concept that all organisms are related to each other by common ancestry.
Evolution
Natural Selection
A mechanism fo rthe occurrence of evolution
1. survival of those offspring best adapted to the conditoins in which they live:
a. individuals produce sexually many more offspring than could possibly survive.
b. These offspring are not identical but show variations based on genetic differences.
c. The variations help t hem to survive to the age of reproduction , so that they cnan pass their genes to the next generation.
Evolution
Who formualted concept o fnatural selection
Charles Darwin and Alred Wallace.
Cytology
Cell Theory
All living things are composed of cells and com from cells
Cytology
Cell size
Small to maximize surface area to volume ratio for regulating internal cell environment
Cytology
Cell Membrane
Composed of fluid-like phospholipid bilayer, proteins, cholesterol and glycoproteins
Cytology
Cell Wall
Outside of cell membrane in some organisms, composed of carbohydrate, or carbohydrate derivative
Cytology
Cytoplasm
Material outside nucleus
a. site for metabolic activity
b. cytosol: solutions with dissolved substances
c. organelles: Membrane bound subunits of cells with specialized functions
Cytology
Cytoskeleton
Supportive and metabolic structure composed of microtubules, microfilaments and intermediate filaments.
Cytology
Prokaryotic Cells:
Simpler cellular organisms with no nucleus or other membrane bound organelles
Flagellum, pili, ribosomes, plasma membane, cell wall, capsule, DNA
Cytology
Eukaryotic Cells
Complex cellular organization
Nuclues
nucleolus
rough e.r.
smooth e.r.
Golgi apparatus
lysosome
peroxisome
chloroplast
chromoplast
leukoplast
mitochondrion
vacuole
cytology
nucleus
dna/chromosomes, control cellular activities via genes
Cytology
Nucleolus
located within nucleus, site for ribosome synthesis