Characteristics of life
All living organisms share this basic unit of structure.
Cells
The variable that is purposely changed.
What is the independent variable?
Organ that releases insulin and glucagon.i
Pancreas
Basic unit of the nervous system.
What is a neuron?
Main function of the respiratory system.
What is gas exchange (oxygen in, carbon dioxide out)?
A change in the environment that causes a reaction.
stimulus
The variable that is measured.
Control group
Hormone that lowers blood glucose.
Insulin
Neuron structure that receives signals.
Dendrites
The system that transports oxygen to body cells.
Circulatory system
Why are viruses not considered fully living?
Lack cell structure
Why is a control group important?
provides a baseline for comparison.
Hormone that raises blood glucose during exercise.
What is glucagon?
Why is the nervous system faster than endocrine?
It uses electrical impulses.
Where oxygen enters the blood in lungs.
What are the alveoli?
Sweating to cool the body shows this life process.
Maintaining Homeostasis
Why should experiments be repeated?
Increase reliability and reduce error
Explain insulin and glucagon as a feedback loop.
They reverse changes in blood glucose to maintain balance.
Brain’s ability to change with learning
What is neuroplasticity?
How do these systems work together in exercise?
Lungs supply oxygen, blood delivers it to muscles.
Give one reason fire is not considered alive.
It is not made of cells and cannot reproduce independently.
Why are results invalid if multiple variables change?
You cannot determine which variable caused the outcome.
Predict blood glucose if insulin is absent.
Blood glucose remains dangerously high.
Function affected if the axon is damaged.
Signal transmission away from the neuron.
Process affected if RBCs can’t carry oxygen.
Cellular respiration (energy production).