Hierarchy of Organization
Fill in the blank: Cell, Tissue, Organ, _____ , Organism
Organ system
What is the term for a cell membrane that allows some molecules to pass through while keeping others out?
Semi-permeable (or semi-permeability)
Which type of transport moves molecules without requiring energy (ATP)?
Passive
What is the key difference between diffusion and osmosis?
Water (osmosis uses water)
Once a cell reaches equilibrium (balance), molecules stop moving completely across the membrane - True or False
Made of a group of tissues working together to perform a specific job, this level of organization includes examples like kidneys, liver, and brain
Organ
These large structures found throughout the membrane act as tunnels to help large or different molecules cross through.
Transport Proteins
In which direction does active transport work: high to low concentration or low to high concentration?
Low to high concentration
If a cell has 90% water inside and is placed in a solution with 70% water outside, which direction will water flow during osmosis?
Outside of the cell (high to low)
In the diffusion lab, was the plastic bag semi-permeable?
The basic unit of life is which level in the hierarchy of organization?
Cells
The onion osmosis lab showed cells shrinking when exposed to salt water. Which cell membrane characteristics does this exhibit the most?
Flexibility (of the membrane)
Oxygen gas easily passes directly through the cell membrane without using energy or transport proteins. What specific type of transport is this? (If passive, be specific)
Passive simple diffusion
If I sprayed perfume / cologne in the front corner of the classroom and waited until the person in the back corner could smell it, this would be an example of which type of passive transport?
Diffusion
What would happen to a freshwater fish cell if you dropped it into ocean saltwater?
You were looking at onion tissue samples under the microscope during the osmosis lab, what does that make the onion bulb the tissue samples were collected from?
Organ
Which of the 6 characteristics of life does the cell membrane embody the MOST?
Homeostasis
If a poison shuts down a cell’s mitochondria so it can no longer produce energy, which type of transport will immediately stop working?
Active
During the osmosis lab, which organelle in plant cells made it so that we saw no change when the onion was in fresh water?
Vacuole
A chef pours salty salad dressing onto fresh lettuce leaves an hour before dinner. By the time it is served, the lettuce is soggy and wilted. Which type of passive transport caused water to leave the lettuce leaf cells?
Osmosis
Cancer is caused by uncontrolled cell division. When mutated cells group together to form a lump or tumor, that tumor is what level of organization?
Tissue
Which type(s) of transport can use transport proteins? Active? Passive? Both?
Both
If a cell has 6 glucose molecules inside and wants to acquire the 2 glucose molecules from the outside, which type of transport would this be an example of?
Active
In the winter, grass often dies near the roads that have been covered in salt to remove the ice. During this process of osmosis, is the water moving from high to low or low to high concentration?
High to low
In the diffusion lab, we saw that iodine moved from the beaker into the bag with cornstarch. What would happen if you did an experiment in which the iodine was placed in the plastic bag, and the starch solution was in the beaker? Where would the iodine end up?
In the beaker