1. Cell Structure Review

2. Create a VENN diagram to compare and contrast Prokaryote Cell and Eukaryote Cell:
Nucleus
Contain organelles
Genetic material contained in nucloid region
Surrounded by a cell membrane
Complex
Contain genetic information
Example: plant, animal, fungi, protist
Simple
Contain ribosomes
Example:
Bacteria

3. What part of this nested VENN diagram includes prokaryotes:

4. List the levels of organization from smallest to largest.
Atom
Molecule
Organelle
Cell
Tissue
Organ
Organ System
Organism
Population
Community
Ecosystem

5. Draw a diagram and explain endosymbiotic theory?
A prokaryote cell engulfs another prokaryote (mitochondrion) cell and creates a simple animal cell.

6. What does permeable mean? Why is a cell membrane semi-permeable?
Permeable means to permit or allow things to pass through. The cell membrane is semi-permeable because it only allows CERTAIN things to pass through.

7. What is the difference between osmosis and diffusion?
Diffusion is simply the movement of molecules from an area of higher concentration to lower concentration.
Osmosis deals specifically with water moving from higher concentration to lower concentration.

8. Label the area of high concentration, low concentration and carrier molecule.

9. Define and give an example: Positive Feedback and Negative Feedback
Positive feedback:  the type of feedback when a change in the controlled quantity is further increased by the system.
Example: conversion of enzymes to other enzymes for digestion
Negative feedback: the type of feedback when a change in the controlled quantity is counterbalanced by the system
Example: Guard cell adjusts for changes in temperature and moisture

10. When doing a microscope lab to observe cheek cells, what lab SAFETY equipment is necessary. Circle all that apply:
Apron
fire extinguisher
Goggles
ear plugs
fire blanket
Gloves
eye washer

11. What would be a research “problem” or question for this experiment?
Does molecule size affect permeability of a membrane
Explain the procedure for the dialysis tubing lab?
Iodine is added to water outside the baggie, starch is added inside the baggie, the iodine molecules move into the baggie turning the starch purple/black
What vocabulary term did we demonstrate?
Diffusion (iodine into the baggie through the membrane)
What did the results demonstrate?
The iodine molecules were small enough to travel through the membrane but starch molecules were not

12. List three differences between these cells:
Prokaryote has no nucleus only nucleoid region
Eukaryote has several membrane-bound organelles; prokaryote has no organelles
Prokaryote is small and simple in structure

13. What is the function of these two structures?
Movement
What is another word for that function?
Motility

14. Cytoplasm: portion of the cell outside of the nucleus
Nucleus: control center of the cell
Contains nearly all the cell’s DNA
Coded instructions for making proteins and other important molecules
Cell membrane: regulates what enters and leaves the cell and provides protection and support
Ribosome: Small particles of RNA found in the cytoplasm that produce proteins by following coded instructions from the nucleus

15. Mitochondria and Choroplasts
Mitochondria: organelles that convert chemical energy stored in food into compounds that are more convenient for the cell to use
Chloroplasts: organelles that capture the energy from sunlight and convert it into chemical energy – photosynthesis