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what are the steps of the scientific method?
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set up an experiment
whats a theory?
a true statement
what is a hypothosis?
an educated guess
what is a variable?
a condition that might effect the experiment
what is a control?
you can change one of the experiments
what are the characteristics of living things?
able to reproduce
has a genetic code
can grow and develope
can obtain materials and energy
can respond to its enviorment
changes over time
can maintain and enviorment
what is a light microscope?
it produces magnified images by focusing visable light
how can you find the magnification field of view?
eye piece times magnification lenz
what are the types of bonding?
ionic and covelent
what are the three properties of water?
what are the four major bio molecules, what is there monomer and what are the functions?
carbs- sugar molectules- energy
lipids- fatty acids- store energy
nucleic acids- nucleotides- store and transmit genetic info
proteins- amino acids- controll rate of reactions
what are enzymes?
what do enzymes do?
speed up chemical reactions
what is cellulose?
what is ecology?
the study of organisms and there interactions and enviorment
what are the trophic levels?
steps in the food chain / web
what is the greenhouse effect?
when the atmosphere traps in gasses
what are biotic factors?
influence on living things
what are abiotic factorss?
influence on non living things
what factors afect population growth?
births and deaths and number of individuals
what is the deifference between a prokaryote and a eukaryote?
pro has no nuclei and eu has one
what is the nucleus?
what is the mitochondria?
stores energy into compounds the cell can use
what is the chloroplast?
color in plants
what is the golgi apparatus?
modifies, sorts and packages proteins and other materials
what is lysosomes?
filled with enzymes
what is the cell membraine?
thin flexible and surrounds the cell
what is the cytoplasm
protion of the cell outside the nucleous
what is ribosome
paricals of RNA and protein found in the cytoplasim
what is osmosis?
diffusion of water through a permiable membrane
what is ATP used for?
to store and release energy
how do surface area and volume relate to cell division?
when it gets bigger= larger surface area and less volume
what are the phases of the cell?
g1 phase- growth
g2 phase- preperation for mitosis
S phase- DNA replication
M phase- mitosis begins
what are the stages of mitosis?
interphase- grows and duplicates DNA
prophase- copies and pair becoming chromatid
metaphase- line up down center
what is miosis?
two daughter cells of mitosis spilt
what are sex linked traits?
disorder in x chromosome
what is nondisjunction?
when a chromosome doesnt pair or falls apart