What is a hypothesis?
A proposed explanation based on the basis of evidence.
"an educated guess"
What are the 4 macromolecules?
carbohydrates
lipids
nucleic acids
proteins
What is qualitative data?
descriptive data (5 senses)
Which objective lens gives the most detail? (4x,10x,40x)
40x
You observed a sample under a microscope. You noticed it was round, pink, and about 10 micrometers wide. Which observations are qualitative, and which are quantitative?
Qualitative - round,pink
Quantitative - 10 mm
A research question much be _________ and _________.
testable; specific
Which type helps build muscle and enzymes?
proteins
What is quantitative data?
Numerical data
What part is used to carry the microscope safely?
arm and base
Found in butter, used for energy storage, made of fatty acids — What biomolecule am I?
Lipid
What is wrong with this hypothesis?
I think plants grow faster because of they are green.
Not specific
Not written in "if...then...because"
Which biomolecule gives quick energy?
carbohydrates
Give an example of each type of data (from mealworm experiments).
Qualitative - color, behavior, etc.
Quantitative - distance, time
If the eyepiece is 10x and the objective is 40x, what is the total magnification?
400x
A student places a slide on the microscope, uses the 40x objective first, and immediately adjusts the coarse focus. They hear a crack. What did they do wrong, and what should they have done instead?
They should have started with the 4x objective and used the coarse focus only on low power.
What is the difference between independent and dependent variables?
independent - manipulated by scientist
dependent - measured by scientist
Which element is unique to proteins and nucleic acids?
Nitrogen
Why is it helpful to collect both types of data in an experiment?
Gives you a more broad understanding of the subject in the experiment.
What is the difference between magnification and resolution?
Magnification refers to the ability to make an object appear larger, while resolution refers to the ability to see between two closely spaced objects (blur).
Can data be both qualitative and quantitative? Give an example.
yes
ex. pain scale 1-5
In an experiment where fertilizer is tested on plant growth, what are the variables?
independent - fertilizer
dependent - growth
control - plant type, soil, climate, etc.
What is the monomer of a lipid?
Lipids have no true monomer !!
Describe a situation where qualitative data might be more useful than quantitative data.
answers will vary
ex. when observing behaviors or emotions
What is to make cell structures easier to see or to highlight specific parts like the nucleus or cell wall?
What is a monomer of a carbohydrate?
monosaccaride