Scientific Method
What is the first step of the scientific method?
Ask a question/State the problem.
Which organelle helps to clean the cell?
Lysosomes.
How does the cell membrane help maintain homeostasis?
It regulates what can enter or exit the cell.
What is the function of the small intestine?
It absorbs nutrients using villi.
What is the function of the circulatory system?
To circulate nutrients, oxygen, and waste around the body.
What step comes after research in the scientific method?
Forming a hypothesis.
How do vacuoles in a plant cell differ from the vacuoles in an animal cell?
Plant cells have one large vacuole while animal cells have multiple smaller vacuoles.
What is the function of the phospholipids?
It helps to form the phospholipid bilayer where gases and water can pass through.
True or False: the stomach performs only chemical digestion.
False.
What are the 4 functions of the muscular system?
1. Maintain posture
2. Stability of joints
3. Movement
4. Generate heat
What is the 4th step of the scientific method?
Performing the experiment.
Why are the nucleus and brain similar?
They are both the control centers; the nucleus for the cell and the brain for the human body.
What is the function of the protein?
A channel where larger particles can pass through the cell membrane into and out of the cell.
What are the organs of the excretory system?
Kidneys, ureters, bladder, and urethra.
What are the 5 functions of the skeletal system?
1. Structure and support
2. Movement
3. Produce red blood cells
4. Release/absorb minerals into the bloodstream
5. Protect internal orans
A student has created graphs and tables for their science fair project. What should follow this step?
Drawing a conclusion.
What is the function of the mitochondria?
The "powerhouse" of the cell that breaks down food to create energy (ATP) for the cell.
What is the function of the carbohydrate?
It is used for cell identification.
What are the organs of the circulatory system?
What is the function of the digestive system?
To break down food into usable energy for the body.
A student decides to perform the scientific method in order to answer the question, "How does a person's education level affect their health later in life?"
What is the independent and dependent variable in the above question? Be specific when saying which is which.
Independent variable: Education level
Dependent variable: health
Which 2 organelles are found only in plant cells?
Chloroplasts and cell walls.
What is the function of the cholesterol?
It helps regulate the fluidity of the cell.
Describe the pathway of oxygen into the body using the organs of the respiratory system.
Air enters through the nose/mouth and goes to the pharynx, then the larynx, then the trachea, then the bronchi, bronchioles, and alveoli which are all within the lungs.
What is the difference between the peripheral and central nervous systems? Be specific!
The CNS contains the brain and spinal cord and is responsible for responding to messages from the PNS. The PNS contains the nerves and is responsible for sending and receiving messages from the brain.