Concept Checks: Chapter 6- A Tour of the Cell
Concept Check 6.1
1.What evidence led to the development of the cell theory?
2.How do the various kinds of microscopes differ as tools in the study of cells?
3.Identify two similarities and two differences between plant and animal cells.
4.How is a eukaryotic cell different from a prokaryotic cell?
Concept Check 6.2
1.Describe how phospholipids molecules are oriented in the plasma membrane of a cell.
2. What is the function of a transport protein?
Concept Check 6.3
1. What is diffusion?
2. What role does a cellular membrane play in passive transport?
3. Distinguish between hypertonic, hypotonic, and isotonic solutions, and give an example of how each affects
the cell.
4. What role does active transport play in cell function?
5. How do vesicles transport large molecules out of a cell?
Concept Check 6.4
1. In what way does the nucleus direct the activities of a cell?
2. Trace the path of a protein from the time it is produced by a ribosome on the ER until it reaches its
destination.
3. How are undigested nutrients in a vacuole made available to a cell?
Concept Check 6.5
1. How are functions of chloroplast and mitochondria similar?
2. How does a cell use the energy produced by mitochondria?
3. In what way is energy changed by reactions in a chloroplast?
4. How is membrane structure important to the functions of mitochondria and chloroplasts?
Concept Check 6.6
1. How do microfilaments function in the cytoskeleton of a cell?
2. How do flagella differ in structure and function from cilia?
3. Give an example of coordination within a cell.
Concept Check 6.1
1. Microscopic observations by scientists. Hooke observed cells in cork. Van
Leeuwenhoek saw animalcules.
2. Light microscopes magnify <1000x. SEM is used to study the surface of cells.
TEM is used to look through cells. EM’s magnify about 1 million times.
3. Similar: nucleus, plasma membrane, mitochondria
Differences: cells walls, chloroplasts
4. Prokaryotic cells have no nucleus and lack most organelle
Concept Check 6.2
1. Double layer with the phosphates facing out and in. The lipid tails are
sandwiched in between these layers.
2. Transport proteins help move molecules across the cell
Concept Check 6.3
1. Diffusion is the net movement of particles from an area of high concentration
to low concentration
2. Membrane permits certain substances to diffuse through it. Protein channels
provide diffusion pathways for specific substances.
3. Hypertonic- High concentration of solute outside the cell.
Hypotonic-Low concentration of solute outside the cell Isotonic- equal
concentrations inside and outside the cell
Animal cells shrivel in hypertonic; they swell up in hypotonic; no change in
isotonic
4. Active transport helps to maintain concentrations higher or lower than if the
cell depended on only diffusion
5. Exocytosis: vesicles fuse with the plasma membrane and empty their contents
outside the cell
Concept Check 6.4
1. Nucleus contains DNA, which carries the instructions that direct cell activities
2. Protein is produced from ribosomes on ER  Goes in ER and surrounded by
vesicle  Vesicle moves to the Golgi apparatus  Process and routed to next
location
3. Lysosome fuses with a vacuole and exposes undigested nutrients to enzymes.
The nutrients are then usuable.
Concept Check 6.5
1. Both structures are involved in making energy available to the cell
2. Energy is used to form ATP, energy carrier of the cell
3. Reactions in the chloroplast change light energy into stored energy
4. Both have inner and outer membranes, chemical reactions take place within
these membranes.
Concept Check 6.6
1. Microfilaments are thin rod-like structures that allow the cell to move and
change shape
2. Flagella are long whip-like structures that move in a S pattern. Cilia are short
hair like structures that move back and forth
3. DNA directs protein production for the plasma membrane. They aid in the
movement of molecules through the cell.
A Tour of the Cell
1. Rough Endoplasmic Reticulum
2. Golgi Apparatus
3. Plasma Membrane
4. Mitochondria
5. Central Vacuole
6. Cell Wall
7. Chloroplast
8. Nucleus
9. Nucleolus
10. Plant
11. Cytoplasm
12. Organelle
13. Eukaryote
14. Nuclear envelope
15. Endocytosis
16. True
17. Vesicle
18. True
19. True
20. Microtubules
Concept Checks: Chapter 6- A Tour of the Cell
Concept Check 6.1
1.What evidence led to the development of the cell theory?
2.How do the various kinds of microscopes differ as tools in the study of cells?
3.Identify two similarities and two differences between plant and animal cells.
4.How is a eukaryotic cell different from a prokaryotic cell?
Concept Check 6.2
1.Describe how phospholipids molecules are oriented in the plasma membrane of a cell.
2.What is the function of a transport protein?
Concept Check 6.3
1.What is diffusion?
2.What role does a cellular membrane play in passive transport?
3.Distinguish between hypertonic, hypotonic, and isotonic solutions, and give an example of how each affects
the cell.
4.What role does active transport play in cell function?
5.How do vesicles transport large molecules out of a cell?
Concept Check 6.4
1.In what way does the nucleus direct the activities of a cell?
2.Trace the path of a protein from the time it is produced by a ribosome on the ER until it reaches its
destination.
3.How are undigested nutrients in a vacuole made available to a cell?
Concept Check 6.5
1.How are functions of chloroplast and mitochondria similar?
2.How does a cell use the energy produced by mitochondria?
3.In what way is energy changed by reactions in a chloroplast?
4.How is membrane structure important to the functions of mitochondria and chloroplasts?
Concept Check 6.6
1.How do microfilaments function in the cytoskeleton of a cell?
2.How do flagella differ in structure and function from cilia?
3.Give an example of coordination within a cell.