Pros and Eus and Cell Theory
Three parts of Cell Theory???
1) All living organisms are composed of one or more cells
2) The cell is the basic unit of structure and function in living organisms
3) All cells arise from pre-existing cells.
Negative or Positive Feedback Loop:
When you get really hot, you begin to sweat
Negative
(Bonus points if you can describe the component)
PHOSPHOLIPIDSSSSSSSSSS
(A hydrophilic head and a hydrophobic tail)
A cell in a hypotonic solution will do what?
SWELL
Active Transport involves what component?
ENERGY!!!!
What are some examples of eukaryotes?
Animals: Dogs, Monkeys, Tigers, etc.
Plants: Flowers, grass, etc.
What is homeostasis?
An organism's ability to maintain a normal, usual state regardless of change in environment.
How would you describe a cell membrane.....
Something along the lines of "fluid" and/or "semi-permeable"
A cell in a hypertonic cell will do what?
shrink
Molecules moving from a high concentration to a low concentration is an example of what kind of transport?
Passive Transport
What are some examples of prokaryotes?
Bacteria. I legit don't know the name of any...
What is a positive feedback loop?
(Bonus points if you can name an example and how that example works
A change that is amplified to help an organism return to homeostasis.
(Childbirth, blood clotting, etc.)
What allows molecules to enter the cell?
HINT: they are types of proteins
Channel and Pore Proteins.
A CELL WILL DO WHAT IN AN ISOTONIC SOLUTION.
Stay the same.
Passive transport using proteins is....
Facilitated Diffusion!
What does multicellular mean?
What is a negative feedback Loop?
What does cholesterol do for the cell membrane?
It stabilizes it!!!
A cell is in a glass of some sort of liquid. The liquid has a higher solute concentration than the cell. What kind of solution is this?
Hypotonicccccc
What type of energy is used in active transport?
ATP energy!
Name as many similarities and Differences between Eukaryotes and Prokaryotes.
Similarities: Prokaryotes and eukaryotes are both cellular life forms that share similarities like having a plasma membrane, cytoplasm, ribosomes, and DNA, Differences: structure and complexity. The main distinction is that eukaryotes have a membrane-bound nucleus and organelles, while prokaryotes lack these features and have a simpler structure, including smaller, circular DNA. Eukaryotes are also generally larger and can be multicellular, whereas prokaryotes are typically unicellular and smaller. (yes I cnp this because I was too lazy)
Lets say your really stupid and touch a really hot stove. Your nerve endings detect this immense heat and PAIN. Your brain then wants to send a signal to your hand. The muscles in your hand contract. You then pull your hand away from the stove.
Name the Stimuli, Receptor, Control Center, Effector, and Response.
Why do cells have a cell membrane?
To let things in and keep things out! This allows the cell to grow, develop, and let you live.......
A cell is placed in another liquid. The water in the liquid is absorbed by the cell. What is this?
osmosis.
Why is facilitated diffusion considered passive transport despite involving transport proteins?
It don't use ATP and it moves down the concentration gradient.