Fianls Study Guide Flashcards
What are the steps of the scientist method
- Observe and ask question- notice a problem and find out all you can about it
- Inferring and hypothesizing - propose a explanation for what you see
- Design a controlled experiment - set up trails and a control group
- Collect data - make measurements, analyze, and then come to a conclusion
Define organic molecules
Organic molecules are the molecules which exist in all living things. They contain carbon
Benedict’s
Test for glucose turns organic is positive stays blue is negative
Biurets
Test for protein purple is positive stays blue is negative
Iodine
Test for starch blue black is positive stays amber is negavtive
Brown paper
Test for lipids paper has a greasy spot is positive paper dries without spot is negative
How can temperature affect an enzyme’s ability to work?
Can denature protein
How can a type of substrate affect an enzyme’s ability to work
Enzymes work on specific substrate
How can the amount of enzyme affect an enzyme’s ability to work?
Limit . Monc doesn’t mean better
What are the levels of organization used in ecology
Organism
Population
Community
Ecosystem
Biome
Biosphere
Decomposed/detritivore
Decomposers break down dead, organic materials, detritivores like millipedes, earthworms, and termites, eat dead organism and wastes
Scavenger
Is an organism that mostly consumes decaying biomass, such as meat or rotting plant material
Compare and contrast food webs and food chain
A food chain outline who eats whom. A food web shows all the food chains in an ecosystem
What are the trophic levels from the start of a food chain to the 4th top predator?
Trophic level 4- top predator
Trophic level 3 carnivore
Trophic level 2- herbivore/omnivore
Trophic level 1- autotrophs
What effect can change in population have on other populations
If one population dies out, all the other populations depend on that species for food may also die out. They all depend on each other
What are three relationships of a symbiosis
- Mutualism - each organism helps the other oxpecker bird and the zebra
- Commensalism- one organism benefits, the other is unaffected Remora fish eats shark leftovers
- Parasitism- one organism benefits, they other is negatively affect. Tapeworms absorb good from host and host is malnurished
How is a habitat different from a niche
A habitat is a place where organisms live and a niche defines a specific roles played by organism in an ecosystem
What does a diaphragm do
Adjusts the amount of light entering the scope
What does a stage do
Holds the slide for viewing
What does an eyepiece do
Multiples the image x 10. Where you look into a scope
What does a revolving nosepiece do
Allows you to switch from low to high power
What does the Objectives do
Different magnification lenses from viewing
What does the arm do
One of the places you carry the scope by
What does the fine adjustment knob do
Allows you to sharpen the focus quality of an image
What does the coarse adjustment knob do
Brings the slide into approximate focus
Muticellar
Made of more than one cell
Unicellular
Organism is only one cell
Organelle
Specialized structure inside the cell
Nucleus function
Control center for the cell
Cell membrane function
Controls what enters and leaves the cell
Mitochondria function
Powerhouse of the cell, site of cellular respiration to make ATP
Chloroplast
Site of photosynthesis to make sugars
Golgi body/apparatus function
Modifies and packages material to leave the cell
Endoplasmic reticulum function
Transports material throughout the cell
Ribosome function
Make proteins
Chromatin function
DNA stored in nucleus
Cell wall function
Supports and protects
Vacuole
Stores material
