+
Related Flashcards
Related Topics
Cards In This Set
| Front | Back |
|
Looking at the scientific method, on what is science based?
|
The experiment - Empiracal - the knowledge that is based on experience and observations that are rational, testable and repeatable
|
|
What is the smalled unit of life that can be considered alive?
|
A cell
|
|
Where is the greatest concentration of nitrogen? Which organisms make it usable?
|
In the Atmosphere (78%)
Bacteria
|
|
What three chemical elements are present in all living organisms? What is the additional chemical element in proteins?
|
Oxygen, carbon and hydrogen-nitrogen
|
|
How are carbohydrates classified? Give examples of each group.
|
Carbs are classified by size. Carbon Hydrogen and oxygen.
Monosaccharides or simple sugars: glucose, found in sap and fruit of many plants and fructose. Polysaccharides and complex carbohydrate: cellulose and chitin and starch. |
|
What are the two major groups of cells? How do they differ?
|
Eukaryotic cell: Evolve 1.5 billion years after Prokaryotes, "Good and Kernel" has a nucleus which contains the cells DNA. Organisms composed of eukaryotic cells are eukaryotes. Much larger, domain Eukarya, much more advanced.
Prokaryotic Cell: First to evolve, "Before and Kernel" does not have a nucleus; its DNA simply resides in the middle of the cell. Organisms composed of prokaryotic cells are prokaryote. Bacteria and Archea domains, smaller and fewer structural features. |
|
7. What are organelles? Name one organelle that is found only in animal cells. Name two organelles that are found only in plant cells.
|
Specialized structures in the cytoplasm of eukaryotic cells with specific functions, such as the rough and smooth endoplasmic reticulum, Golgi apparatus and mitochondria.
Animal:
Lyosomes
Mitochondria: the power house of the cell, converts energy at the chemical level for all tasks, has own set of DNA.
Plant Only:
Cell wall: surrounds plasma membrane, made up of polysaccharide cellulose.
Vacuole: cells back up nutrients and waste, poisons, and pigments.
Chloroplasts: site of photosynthesis, similar shape to photosynthetic bacteria.
|
|
What is the commonest cause of pollution in streams, rivers, and oceans?
|
Siltation
|
|
Where is the largest proportion of water on earth? Is it usable for drinking water?
|
Oceans, No
|
|
What does “biodiversity” mean?
|
The variety and variability among all genes, species and ecosystems.
|
|
What forms of energy are used in plants? What form of energy is used in animals?
|
Plants Energy: Chloropasts
Animal Energy: Glycolysis and the Kreb Cycle
|
|
What energy process is used in plants? What energy process is used in animals?
|
Plants: Cellular respiration and photosynthesis
Animals: Glycolysis, Krebs Cycle and Electron Transport Chain
|
|
What organelle houses chlorophyll for photosynthesis? What organelle is the “powerhouse” of the cell?
|
Chloroplasts and Mitochondria
|
|
Name three fossil fuels. Are they renewable or non-renewable?
|
Gasoline, oil and natural gas
Non-renewable: oil, and natural gas, coal
Renewable: wood
|
|
What fossil fuel is considered the cleanest? Name two alternative energy sources.
|
Natural Gas
Kinetic and Potential Energy
|
