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32 Cards in this Set

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  • Back
Living things contain these organic molecules
Proteins
Carbs
Lipids
Nucleic Acids
Living things are composed of____
What are the two types of these
Cells
Unicellular and Multicellular
Where do cells come from
pre-existing cells
Define Biology
the study of living things or organisms
metabolism
all chemical processes taking place within cells of living organisms
living things grow and reproduce
continue species through reproduction using gene material
cell
the smallest functional unit of life
living things must obtain ____&____ from the environment
energy and nutrients
living things respond to _____ by doing what
stimuli by sensing changes in the environment and responding to them
How do plants obtain energy and nutrients?
Plants maintain energy from the sun and obtain nutrients from the soil
Stimuli
change causes a response in an environment
living things maintain homeostasis
living things maintain homeostasis
homeostasis
the ability to maintain a steady state of equilibrium in the internal environment
external environments
conditions outside the body
internal environments
conditions inside the body
homeostatic mechanisms
processes inside your body to regain or maintain homeostasis when you are faced with stresses that push us out of range
what age group has the most homeostatic problems
infants and the elderly
Four reasons that Infants have problems maintaining homeostasis
1)Small body size
2) homeostatic mechanisms not fully functioning
3)cant act on signals, they need help
4)dont always sweat enough to cool them down
Why do the elderly have problems maintaining homeostasis
they gradually lose their sensitivity to coldness as they get older
populations of living things _____and have ________ traits
Evolve
adaptive
How does each population have the ability to be successful(live and reproduce)
Through Natural selection
Adaptive traits
genetic traits (determining structure and function ) that help an organism be successful
Natural selection
Means by which over millions of years, organisms evolved to have certain traits
Adaptations
lead to biodiversity
Levels of Biological Organization
Molocule
Cell
tissue
Organ
Organ system
Organism
---------------
Ecology
What is required to maintain organization
Energy
Levels of Biochemistry
Biochemistry/ molecular biology
cytology
histology
anatomy and physiology
How are structure and function related?
How something is structured depends on what it needs to do to correctly function
3 Ways we can consider Biology a science
1) Science is Objective not subjective
2) Helps humans understand the natural world.
3) Conclusions may change or modify.
Objective
observed using senses
factual
measurable
Subjective
Personal Opinion
Values
Bias
Steps of the scientific method
Observe
Hypothesize
Analyze
report or publish