I've got a Scientific Method/Variables!
The first step in the scientific method.
Observe
A seed can remain dormant for years without showing signs of life such as movement, growth, or energy use. However, when placed in suitable conditions, it can germinate and grow into a plant.
Is it living?
Yes!
All living things are composed of one or more what?
Cells
What do we call an unwelcome microbe that enters the body and causes disease?
Pathogen
Name two common symptoms of the flu
For a scientist to test their hypothesis, they must do this.
create an experiment
A virus can reproduce and evolve but only within a host organism. Outside of a host, it is inactive and cannot perform life processes on its own.
Is it living?
No!
What is one of the two things (we learned of) which plant cells have but animal cells do not have.
chloroplasts or cell wall
Mr. Perry gets a virus that was from one person to another through close contact. Why type of disease is this?
Communicable disease
How does the flu virus typically enter the body? (name 3 ways)
The nose, mouth, or eyes when an infected person coughs, sneezes, or talks
The variable the scientists change over the course of the experiment/investigation is what?
Independent Variable
This requirement to be a living thing contains all the genetic code of an organism. What is it?
DNA
Cells that contain a nucleus and complex membrane-bound organelles are what?
Eukaryotic
What is the part of the pathogen that alerts the body of a foreign invader?
Antigen
What is one key action you can take to prevent the spread of the flu?
Ex: Washing your hands often with soap and water for at least 20 seconds
The step of the scientific method when a scientist proposes an answer to his question that is informed by your research.
Make a Hypothesis
All living things consume energy to live. If heterotrophs get energy by consuming other organisms, what do autotrophs get energy from?
the sun
Daily Double! (for 800 points)
Why is the mitochondria the powerhouse of the cell?
Produces energy (ATP)
In the 1st line of immune system defense, which defender uses hairs, mucus, cilia and might cause coughing and sneezing?
Breathing Passages
What does the flu vaccine stimulate in the body to fight the virus?
production of antibodies
In the penny experiment Timmy had this hypothesis:
I predict that soap will cause the number of drops that can stay on a penny to be less than the number of drops on a dry penny.
What variable is the number of drops?
Dependent Variable
Living things sense and respond to changes in their environment (stimuli). What are organisms trying to maintain when they react to stimuli?
Homeostasis
Cells that do not have a nucleus or membrane-bound organelles are what?
Prokaryotes
Cytotoxic T Cells cause destroy infected cells by causing them to self-destruct. What is this called?
Apoptosis
Daily Double!! (1000 pionts)
Describe a specific response of the immune system to the flu virus after vaccination?
Creation of memory cells that remember how to fight the disease in the future