Water/Biomolecules/Plasma Membrane
Enzymes & Cell Organelles
Membrane Transport
Homeostasis & Feedback Loops
Random
100
What is adhesion?
Adhesion is the property of water that allows it to stick to other molecules or substances.
100
What is the job of an enzyme?
To help catalyze (speed up) chemical reactions in the body.
100
Name the three types of passive transport.
Do they require energy?
Simple diffusion, facilitated diffusion, osmosis
Passive transport does not require energy
100
When you go outside to PE and your body gets too hot, what two mechanisms try to help your body cool down so that it maintains homeostasis?
Sweating and vasodilation (the widening of your blood vessels)
100
True or False: Negative Feedback reverses changes in a system while positive feedback amplifies changes in a system.
TRUE
200
What property of water allows Water Striders to "float" on top of the water?
Cohesion causes hydrogen bonds to form between the positive region of one water molecule and the negative region of another.
200
What is the name of the spot where the enzyme binds with the product?
200
What kind of membrane transport is shown in this example? And what kind of molecules are transported in this type of transport?
Facilitated diffusion; large and/or charged molecules.
200
If you step outside during winter, your body will __________ in temperature. This will cause your body to start shivering in order to ____________ your body temperature.
Decrease; increase
200
What are Ms. Tiner's two favorite things to do when she isn't at school?
Baking and Reading
300
How does the cell membrane help maintain homeostasis?
By monitoring and regulating what comes in and what goes out of the cell. Does this by membrane transport.
300
What happens when an enzyme gets too hot or is at the incorrect temperature?
It denatures
300
During active transport which way do the molecules move? (High to low or low to high) Does active transport require energy?
Particles move from Low to high concentration. Yes it requires energy.
300
An example of feedback is seen in blood clotting. It has a self-accelerating effect, so that once the clotting process begins, it runs faster and faster until, ideally, bleeding stops. The feedback loop is activated by bleeding and continues until all bleeding stops. Is this an example of negative or positive feedback?
Positive Feedback Loop
300
What is Ms. Tiner's favorite soda?
Dr. Pepper
400
Name the monomers for each of the 4 Biomolecules.
Carbohydrates --> Sugars
Nucleic Acids --> Nucleotides
Proteins --> Amino Acids
Lipids --> Glycerol and Fatty Acids
400
What are the yellow molecules called?
What are the orange/red molecules called?
Yellow molecules coming in are the substrates/reactants.
Orange/Red molecules are the products.
400
In this example, which way will the water move?
The water will move into the cell. This is because there is 90% water outside the cell and 80% water inside the cell. Because of osmosis, we know that water will move from high to low concentration which means water will move into the cell in this example.
400
Is this an example of positive or negative feedback?
Positive feedback
400
Who are Ms. Tiner's top 2 favorite bands/artists?
1. Jonas Brothers
2. Harry Styles
500
What two biomolecules can be found in the plasma membrane?
Proteins and Lipids
500
At what temperature and pH does this enzyme work best?
Temperature --> 36-37
pH --> 8
500
During rainy season, many snails come out onto the sidewalks. Many people pour salt over the snails to kill them off.
The concentration of NaCl (salt) outside of the snail is 95% and the concentration of NaCl inside the snail is 25%.
According to osmosis, which way will water move and how does this effect the snail?
Water will move towards the outside of the snail (from [H] to [L] of water). This will cause the snail to dehydrate and die.
500
Explain how negative feedback loops help the body maintain homeostasis?
Negative feedback loops try to do the opposite of whatever change was detected. This helps to bring the body back to homeostasis. For example, when our body gets too hot, we start sweating in hopes that our body will cool back down to the normal temperature which is homeostasis.
500
What is Ms. Tiner's favorite superhero?
Captain America