Evolution
Water
Scientific Method
Life
Chemistry
100
What are homologous and analogous structures?
Homologous: Structures derived from the same ancestor they do not need to be similar
Analogous: Similar structure but they don't come from the ancestor
100
Draw Waters Polarity
Aldrin will check answers
100
What is the difference between Hypothesis and Theory?
Hypothesis is narrow in scope and its goal is to explain a very specific thing
Theories are explanations that can be proven wrong (not set in stone)
100
What are the 4 major biomolecules in life?
1. Proteins
2. Carbohydrates
3. Lipids
4. Nucleic Acids
100
Draw the Bohr Model for Nitrogen (Z=7)
Aldrin will check answers
200
Explain what Natural Selection is
Organisms with favorable traits survive and reproduce and the others die
200
Explain what cohesion is and how certain animals take advantage of this
Water molecules are attracted to one another due to Hydrogen Bonds and an example is the Water Strider
200
When testing how much sunlight is the best for plants the scientist believes that more sunlight will mean more growth so they put plants under sunlight for different amounts of times and notices that all his are not growing very much even with both plants. What would be the scientists next step?
Most likely it would be to form another hypothesis after thinking about factors such as procedure or other outside variables
200
What are the properties of life?
Energy, Information, Reproduction, Change, Order, Autopoiesis
200
What biomolecule is this? (Aldrin will draw it)
Carbohydrate
300
Draw the graph for Stabilizing, Disruptive, and Directional
correct! Unless not then good effort!
300
What is a buffer and why are they important in life?
A buffer H+ or OH- and can help regulate pH in internal systems that are sensitive to pH
300
Explain what Laws are and how they differ from Theories
Laws are what they are. They explain something that pretty set in stone (but could be defied in the future based on research) an example would be gravity
Theories can be proven wrong much easier and are still theoretical an example would Einsteins equation
300
Why are viruses not considered Natural Life?
Many reasons for this but one of them is they can't reproduce without a host nor produce their own energy
300
What biomolecule is ATP?
Nucleic acid
400
The 5 kingdoms are branched off from the 3 domains which come from a single ancestor
True or False
True
400
If my starting pH is at 4 and I increase the pH to 10 by what factor did H+ decrease by?
pH=-log(H+)
x0.0000001
400
How would you test to see if something is Natural Life?
Many ways but one way would be to come up with a hypothesis choose one thing to test such as reproduction and see if it can reproduce on its own and if it doesn't then it probably isn't natural life but still go back and do the hypothesis process again
400
Are xenobots Natural life? Justify using the properties of life
No (explanation provided by student)
400
What is this reaction?
Hydrolysis
500
Based on what you know about mutations, is it possible for a species to gain a trait that its entire ancestry never had?
Yes because mutations are random and can occur for many reasons
500
If I add 1mL of acid to 100L of water what will my pH be?
Around 7 because its not only about if the acid is there its about how much of it there is. Our instruments measure H3O+ and if there's a tiny amount compared to the amount of water then the instrument will measure a pH of 7
500
What is a control group and what is an experimental group? Provide an example of each
Control group is the one we want to keep as normal as possible (don't receive the change or factor we are trying to measure)
Experimental group is the group that receives our experimental factor
500
Draw a Phospholipid and say what bonds exist in it
Where do we use Phospholipid molecules in our cells?
(students draw) bonds should be single polar covalent, double polar covalent, and noncovalent
500
Name the functional groups
Name what it is
What biomolecule uses this?
Phosphate, Hydroxyl, Carbonyl, Methyl
Nucleotide
DNA and RNA