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Biology Chapter 1


what is biology study of life
what is biosphere includes all living things + the places they are found
the biosphere includes: land, all water, part of the atmosphere
what is biodiversity variety of life on earth
where is biodiversity highest at the equator
where is biodiversity lowest the poles
what is a species one type of living thing that can reproduce + have fertile offspring
number of different species 2 million
what is an organism any individual living thing
list the characteristics of life 1) made of 1 or more cells 2) energy for metabolism 3) respond to environment 4)DNA to pass to offspring
what is a system organized group of interacting parts
a _____ is a system of chemicals and processes cell
a _____ _____ includes organs that interact body system
an ecosystem includes: living + non-living things
what is homeostasis maintaining constant internal conditions
give an example of homeostasis heart rate, body temperature
homeostasis is maintained by a _____ _____ _____ negative feedback loop
what is evolution change in living things over time
what changes when evolution occurs the genetic makeup of a population of a species
_____ can occur through natural selection of adaptations evolution
list the steps of the scientific method 1) observation 2) hypothesis 3) test 4) evaluate results
list the 2 variables experiments have 1) independant 2) dependant
what is an independant variable what changes
what is a dependant variable what is measured
what is a constant condition that is kept the same
what is a control those not experimented on
a theory is supported by: a wide range of scientific evidence
can a theory change yes
list the 2 types of microscopes 1) light 2) electron
when are computer models used when you can't study the subject directly
what is a gene segment of DNA that stores genetic information
what is a genome all the DNA of an organism
knowlege of biology help us ... understand our health
what is physiology study of the human body
what is ecology study of living and non-living things
what do physiologists study 1) food allergies 2) effects of obesity 3) cancer 4) effects of drugs + alcohol
what is biotechnology use and application of living things + biological processes
examples of biotechnology 1) transgenic crops 2)transgenic bacteria 3) genetic engineering
Created by: Emily Dumas