quiz 1 Flashcards
what does biology mean?
Study of life
autotrophs
organisms that can produce their own food by usually photosynthesis
heterotrophs
must obtain material and energy by eating
What does energy mean?
The ability to do work
Homeostasis
“Staying the same” is the ability of the body to maintain relatively constant it’s internal environment as our external environment changes
Life comes from life?
Biogenesis
asexual
unicellular organisms divide (1 parent)
sexual
Usually needs two parents
How many steps in the scientific method
7 steps
What are the steps of scientific method?
Step 1- observation
Step 2- question or problem
Step 3- hypothesis
Step 4- experiments (controlled and repeatable)
Step 5- collect and analyze data
Step 6- conclusion
Step 7- theory
What’s the levels of organization
atoms
molecules
cells
tissue
organs
organ systems
organism
population
community
ecosystem
What’s is taxonomy?
The assignment of a binomial to each species
example: Homo sapiens
What’s is life?
a concept
metabolism
all of the chemical reactions or changes that occur in the body
What is the chemical process that occurs in the mitochondria of cells to convert food into energy
Cellular respiration
food+ O2 -> energy +co2+h2o
What’s does “living things are organized” mean?
Living things are made of smaller things
What’s is DNA?
A coding of your characteristics
What’s the difference between A control group and experimental group?
A controlled group is a group that has everything the same except for which is being tested
What is adaptation?
Being able to change based of your environment
What’s is growth?
The increase in size
Development?
changes that take place between conception and death
Natural selection?
is the differential reproduction success of adapted individuals
Evolution?
The change in the frequency of traits in population and species
