Scientific Method
Variable that is changed or manipulated by experimenter
independent variable
Name two characteristics of life.
Adaptation
Reproduction
Cells
DNA/heredity
Energy processing
Growth and development
Homeostasis
Response to stimuli
Enzyme do this to a chemical reaction
Speed it up
This is the human body's combination of processes to maintain a stable internal environment
homeostasis
What are the building blocks of carbohydrates?
Monosaccharides
Simple sugars
What is a dependent variable?
variable that is is measured
A bunch of cells put together
Tissues
Enzymes do this to an activation energy
lower it
What are 2 examples of homeostasis?
regulating body temperature, heart rate during exercise, insulin regulation, blood pressure
What are the building blocks of proteins?
Amino acids
How is the control group different from the experimental group?
the control group is kept at normal conditions and does not receive the experimental treatment
You count that 85% of a tree's leaves have changed color from green to yellow. Is that an observation or inference?
Observation
Enzymes function depending on...
Shape (lock and key)
What is the claim in a claim, evidence, and reasoning?
The answer to the question being asked. Usually only one sentence long.
Protein!
What is one way to increase the validity of an experiment
increase the number of trials or increase the sample size
What is the purpose of using a "break" on the y-axis of a graph?
To show that you are jumping on the y-axis before you start to follow a regular pattern for the scale.
Increasing the temperature for a chemical reaction will...
speed up the reaction until the enzyme is denatured and won't work anymore
Your data shows that a plant with no fertilizer grew to be 11 inches tall, a plant with 5g of fertilizer grew to be 15 inches tall, and a plant with 10g of fertilizer grew to be 21 inches tall.
What is the REASONING to answer the question "How does fertilizer affect plant growth?"
The data shows that the plant with the most fertilizer (10g) grew to be the tallest (21 inches) while the plant with less fertilizer (5g) grew to be only 15 inches tall, and the plant with no fertilizer grew the least (11 inches). This tells us that fertilizer allows plants to grow taller because of the additional nutrients that the plant gets from the fertilizer.
What is an indicator?
A solution that changes color in the presence of the substance it tests for
Provide an example of a hypothesis that would test how light impacts the height of a plant
If the amount of sun is increased then the plant will grow taller
Which characteristic of life do viruses NOT have?
Can only reproduce inside other organisms (except mimiviruses).
Rely on hosts for energy.
Do not have cells.
Do not grow and develop.
Do not maintain homeostasis.
increased _________ of enzymes, makes the reactions speed increase
concentration, number
Write a full CER to answer the final question from Murder and a Meal. What was the last food that the critic ate before his death?
Claim: The critic ate last at the Medford Pastaria, where he had pasta, bread, and olive oil.
Evidence: The iodine test for starch was positive. The glucose indicator test for glucose was negative. The Biuret solution test for protein was negative.
Reasoning: The iodine test for starch was positive, which means there were polysaccharides in the victim's vomit. This means he must have eaten at the Pastaria, where he had pasta and bread which are both polysaccharides.
The glucose indicator test for glucose was negative, which means he did not have simple sugars (monosaccharides) in the vomit, so he did not go to Baskin Robbins and eat ice cream which would have monosaccharides in it.
The Biuret solution test for proteins was also negative, which means he did not eat protein. That means the critic did not eat last at Alfredo's where he had pizza with sausage, pepperoni, and bacon, which are all proteins.
The only place the critic had polysaccharides was the Medford Pastaria, so that must have been the location of his last meal.
What are two elements that are commonly found in biomolecules/macromolecules/organic molecules?
Carbon
Hydrogen
Oxygen
Nitrogen
Phosphorous