vocabulary
What is seen or measured
what do autotrophs do?
they make their own food
what is another name for a lipid
fat
what is digestion?
the break down of food into molecules small enough for the body to use for things like energy
what is selective breeding?
process where scientists produce animals and plants with desired traits (disease resistance, larger fruit, more meat or milk, specific colors
definition of: hypothesis
An untested prediction. A good hypothesis states both cause and effect (“If/then” statement).
what is photosynthesis?
when plants use sunlight to make energy for themselves
what are cells?
the basic unit of life
lung, heart, liver, kidney, etc.
what base pair matches with A? what base pair matches with G?
A-T, C-G (in RNA, A-U and C-G
definition of: data
things you learned/results of an experiment
what is diffusion of molecules?
when a molecule like salt moves from an area of high concentration to low concentration
what does pH measure?
the amount/strength of acids and bases in a solution
where can you find red blood cells?
where do you find your DNA in a cell?
the nucleus
Inference
A conclusion based on observation or evidence
what is a stimulus?
a change in the environment that you respond to
what happens to a protein when it is subject to high temperature?
it will either change shape, lose its function, or break down
what do white blood cells do?
fight infection by helping your immune system
true or false: can the environment change the expression of your genes (DNA)?
true
Definition of: Placebo
A sugar pill or other “fake” treatment give to the control group so subjects do not know which group they are in
what is a neuron?
a nerve cell that can send impulses to the brain
enzymes are catalysts, what is a catalyst?
something that affects the rate of a reaction
what are antibiotics?
Antibiotics are drugs used to stop infections by bacteria. Antibiotics will not work against viruses.
how many chromosomes do humans have? how many pairs of chromosomes?
46 chromosomes, 23 pairs