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intro to science
siecnce
Question | Anser |
---|---|
boiligist def of life (characteristics of life) | 1.reproduction, development, growth 2.adaptations/ evolve 3.resond 2 stiluli 4.aquire materials/energy 5.organizedd |
in multi-cellular organisms combine to form ____________. | tissssssue (nerve tissue) |
tissues make up ___________. | organs |
metabilism- | encompases all the chemical reactions that occr in a cell. |
homeostasis- | maintainence or internal conditoins within certain boundaries |
genes- | contains specific info for how the organism is to be ordered. ,made of long dna molecules |
levels or biological organization | atoms -> molecules -> cells -> tissue -> organ -> organism -> population -> community -> ecosystem -> biosphere |
atom - | smallest unit of a molecule |
molecule - | smallest unit of a compound |
cell - | smallest unit of a living thing |
tissue - | group of cells with common structure/function |
organ - | several tissues organized for a particular job |
organism - | complex individuals containing organ systems. |
population - | several organisms of the same kind in a certain area. |
community - | interacting populations in a particular area. |
ecosystem - | a community + the environmment |
biosphere - | the earth's crust, waters, and atmosphere which are inhabited by living things. |
energy - | capacity to do work / keeps things in order |
metabolism - | all the chemical reactions in a cell. |
ultimate source of energy - | sun |
biotic - | living |
abiotic - | nonliving |
human impact on biosphere: | we mod it for our own purposes |
why do we have a classification system? | live is so diverse, it's universal |
categories of classification,(least to most specific) : | domain, kingdom, phylum, class, order, family, genus, species. |
3 types of domains: | bacteria, archaea, eukarya |
4 kingdoms: | protists, fungi, plants, animals |
do eukaryotes have a nucleus? | yes |
binomial name: | 2 part name that is universal. first word is genus, second is specific species within a genus |
do prokaryotes have a nucleus | no. |
randomized study - | ensures there's no bias |
double blinded study - | both test subjects and investigators don't know who is getting what treatment |
is it good to have a small sample? | nope. |
you're ego is... | your own comparison of you to another person (self esteem) |
biology is the sudy of_________. | life |
scientific process involves using the ________ ________. | scientific method |
The flow of the scientific method "Levels" are... | Observation -> hypothesis -> experiment -> conclusion -> Scientific theory (or hypothesis if the old hypothesis isn't right) |
inductive reasoning is _________. | Using creative thinking to combine isolated facts into a cohesive whole, to come up with a hypothesis. |
hypthesis - | possible explanation for a natural event |
deductive reasoning - | use4d to test a hypothesis using if, then, logic |
experimental design - | manner in which a scientist intends to conduct an experiment. |
control group - | goes through all the steps of an experiment but is not exposed to the factor being tested. |
conclusion - | whether or not the hypothesis is true or false. |
experiments and observations must be... | repeatable by any scientist, to get the same result |
scientific theories - | concepts that join together well supported and related hypothesis. |
principle (or law) - | theory, but is trusted by a ton of scientists. is accepted as true. |
independent variable - | factor of the experiment being tested. |
dependent variable - | result or change that occurs due to the independent variable. |