Variability
Cells and Microscope
Body Systems
Foodborne Illnesses
Experimental
100
This is the variable that I (the scientist) changes
What is the Independent Variable
100
This organelle is the "powerhouse" of the cell
What is the mitochondria
100
When heart rate increases, breath rate
What is increases
100
These are small particles or organisms that can cause a larger organism to become sick if eaten.
What are microbes.
100
In performing an experiment for science fair, two students placed a penny in vinegar for three days, making observations each day. What is one thing they could have done to increase the validity of their experiment?
What is: Have a control group in water Complete multiple trials
200
In order to have a valid experiment, it is wise to have one trial which is not changed... this trial is referred to as:
What is the control group
200
On a compound light microscope, this is the total magnification of the yellow lens
What is 100X
200
These two tissues work together to move body parts with the help of tendons and ligaments
What are muscles and bones
200
A method used to clean surfaces of bacteria and control infectous diseases
What is disinfection
200
In order for another scientist to duplicate your experiment, you must write one of these before performing an experiment.
What is a very detailed procedure
300
This variable changes based on the Independent Variable and must be a measurable outcome.
What is the dependent variable
300
The cell membrane acts like a club bouncer, it only allows...
what is certain substances in
300
These two organs work together in the circulatory system to provide the body with oxygen:
What are the heart and lungs
300
Over time, both antibiotics and pesticides become less effective because...
What is they become resistant and pass it on to their offspring.
300
In order to have good data, this must be measurable with a tool.
What is the dependent variable.
400
When testing the effect of light on plant growth, the amount of light shown on the plant is this variable
What is the independent variable
400
If a cell has a cell wall and produces it's own food in it's chloroplast... it must be a:
What is a plant cell
400
These are three of the functions of blood
What are: to carry oxygen to the cells to carry nutrients to the cells to regulate body temperature to carry waste away from the cells to protect against disease
400
If a food already has microbes living on it, this is the best way to preserve the food for future consumption
What is irradiation.
400
This is the tool used to measure mass.
What is the triple beam balance.
500
These variables must be kept the same during an experiment, if changed, they can cause the results to be invalid.
What are constants or controlled variables
500
A single cell organism can split, producing two identical "daughter cells"... this is called:
What is asexual reproduction
500
This is the correct pathway of food in the human body: HINT! **must use cell, digestive and circulatory systems.
What is digestive system>circulatory system>cell
500
Bacteria will not grow on picked food because they cannot survive in:
What is substances with a high pH (high acidity)
500
In order to illustrate two sets of data that occur over a span of time... this is the best type of graph to use:
What is a double line graph
M
e
n
u