Unit 1 Flashcards
(32 cards)
What are the characteristics of life
Organization Energy Usage Adaptation Reproduction Response to Stimulus
Levels of organization
Atom Molecule Cells Tissue Organ Organ system Organism Species Population Community Ecosystem Biosphere
Define and describe Evolution
The process in which populations change over time to adapt to their environment. These changes pass on to the next generations. Evolution is responsible for the extreme diversity on earth
Define and describe Natural Selection
The mechanism of evolutionary change and is based on how a population changes in response to the environment. Individuals who are better suited to an environment tend to live longer and produce more offspring. This results in changes of characteristics over time, which links back to evolution.
Steps of the Scientific Method
Observation Hypothesis Prediction Experiment Conclusion
Observation
It is a formal way of watching the world and can expand understanding which in turn can help guide an experiment.
Hypothesis
It is based on existing knowledge (maybe from observation) and it must be able to be tested. It is the backbone of an experiment.
Prediction
If a hypothesis is well prepared the scientist should be able to predict the results. If the results and prediction don’t match the hypothesis should be revisited and a new set of experiments should be designed.
Experiment
Experiments are a set of procedures that test the hypothesis. If the experiments and prediction don’t match then the hypothesis is false.
Conclusion
Analyze the data collected and determine whether the hypothesis is supported or not.
What are the organic molecules
Carbohydrates
Lipids
Proteins
Nucleic Acids
Monomers involved in Carbs
monosaccharides
Glucose
Monomers involved in lipids
glycerol
fatty acids
monomers involved in nucleic acids
nucleotides
monomers involved in proteins
amino acids
What is the cell theory
All living things are made up of cells
Cells are the basis of structure and function in all living things
All cells must come from other cells
3 structures all cells have
Plasma membrane
Cytoplasm
Ribosomes
Prokaryotes VS Eukaryotes
PRO no nucleus no membrane bound organelles usually unicellular usually smaller
EUK nucleus membrane bound organelles usually multicellular usually larger
Plant VS animal cells
PLANT
cell wall
large vacuole
chloroplasts
ANIMAL
small vacuole
centrioles
Nucleus
Storage of genetic info
Nucleolus
produces ribosomes
Rough ER
protein synthesis
Smooth ER
synthesis of lipids
Ribosomes
Protein synthesis
