1.1: Study of life
What is the most basic unit of life?
Cell
True or False: An ecosystem contains only living things
false. It contains living species and nonliving things they interact with
What is the name for your proposed answer to the scientific question that you are testing in your experiment?
hypothesis
What can magnify things more: A light microscope or an electron microscope?
electron
Define biology
the science of living things
If a group of living things can reproduce by interbreeding, they are called a what?
Species
evolution
A good hypothesis must be _______
genetic info on DNA
Define organism
A living thing
What molecule passes genetic material to their offspring?
DNA
The fact that a polar bear has hollow hair that helps it stay warm in cold weather is an example of how a polar bear maintains _______
homeostasis
Which variable is the one you change in an experiment?
Independent?
Give 2 examples of imaging technology scientists use
Define ecosystem
physical environment with different species that interact with one another and with nonliving things
One of the characteristics of living thing is the need for __________, which is used in metabolism. Plants and animals get it from different sources.
energy
Give an example of a specific adaptation an organism has and how it is advantageous for them
Responses vary
The conditions you do not change in an experiment are called ___
constants
genomics
Define homeostasis
the maintenance of constant internal conditions in an organisms
What kind of organism reproduces when one cell divides into two cells?
single celled (or asexual)
Why is it important for an organism to maintain homeostasis?
Cells require consistent conditions to function correctly
If I were to run an experiment to see if my daughter slept longer if the room were quiet, if I played classical music, or if I played Taylor Swift, what would the dependent and independent variables be?
independent-what is being played
dependent-how long she sleeps
GMO crops, transgenic bacteria making human insulin, or others
Explain the difference between a theory and a hypothesis
A hypothesis is your prediction for one experiment; a theory is based on many experiments and explains how things work