unit 1 Flashcards
introduction to biology
what are observations used for?
observations describe things/objects, systems, processes, behaviors, etc.
how is qualitative used?
observation that only describes characteristics or qualities using words; no numbers
how is quantitative used?
observation that uses numbers to describe, typically a quantity or measurement (includes units)
true or false: In science, we use the metric system of measurement [meter (m), kilogram (kg), liter (L), etc]
true
what are all living things made out of?
all living things are made up of cells
cells are-
the basic unit of all living things
sexual reproduction–
cells from two parents
asexual reproduction–
cells from one parent
what are organisms determined by?
a universal genetic code called DNA
living things can–
grow and develop, obtain and use energy
where do plants get energy from?
from sunlight
where do animals get energy from?
from the food they consume
what is metabolism?
the chemical reactions through which organisms build up or break down materials
organisms respond to their–
environment, a signal an organism responds to is the stimulus
explain homeostasis
living things can maintain a stable (balance) internal environment
evolution–
organisms change or evolve over time, this is called evolution
what is the first step of scientific method?
observe and state the problem
what is the second step of scientific method?
gather information
what is the third step of scientific method?
form a hypothesis
what is the fourth step of scientific method?
set up a controlled experiment
what is the fifth step of scientific method?
record results
what is the sixth step of scientific method?
analyze results
what is the seventh step of scientific method?
draw a conclusion
what is the eight step of scientific method?
publish results
