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Biology Chapter 7

Terms in this set (26)

What are the 3 principles of cell theory?
1. Cells are the basic unit of life
2. All living things are made of cells
3. All cells are produced from other cells
Prokaryotes do not have a ________________________.
Nucleus
Bacteria are _____________________________.
Prokaryotes
The nucleus stores ____________________________.
DNA
Which organelle breaks down old organelles?
Lysosome
What is a job of the cytoskeleton?
Helps a cell keeps its shape
What organelle makes proteins?
Ribosome
Which structure modifies, sorts, and packages proteins?
Golgi apparatus
What does the golgi apparatus look like?
A stack of folded membranes (like a stack of pancakes)
What is a main function of the cell wall?
Support and protect the cell
Which organelle is found in plant cells, but not animal cells?
Chloroplast
What is the job of the cell membrane?
Regulates the movement of materials into and out of the cell
Osmosis is ________________________.
The diffusion of water across a selective permeable membrane.
Active transport requires ____________________________ for transport.
Energy
Particle transport that uses both energy and a transport protein that moves particles from low to high concentration is _____________ _______________?
Active transport
Type of cell transport in which a molecule is engulfed or enters a vesicle and brought into the cell.
Endocytosis
Describes relatively constant internal physical conditions of an organism.
Homeostatis
List the levels of organization of an organism from simple to complex
Cell (simple)
Tissue
Organ
Organ system (complex)
_______________________ is when molecules move from high concentration to low concentration.
Diffusion
Large molecules that cannot cross the lipid bilayer must use ____________________ to cross the membrane.
Facilitated Diffusion
Prokaryotes have a ______________________ and its DNA is not enclosed in a nucleus.
Cell wall
What is the job of a cell nucleus?
It controls the cell's activities, acts like the headquarters of the cell, and it contains the cells DNA which gives the cell its instructions.
Why does a raisin puff up when placed in a cup of pure water overnight?
The water concentration is highest in the cup of water, so it goes into the raisin where concentration of water is lower.
What causes a blood cell to shrink when placed in a solution?
The concentration of water is highest in the cell. Water will flow out of the cell into the hypertonic solution.
The cell takes in food and water and sheds waste through its selectively permeable____________________.
Cell membrane
Please note: You also need to find a picture the following cell stuctures:
(This one goes with the "please note")
Nucleus
Mitochondria not
Ribosome
Cell membrane
Smooth Endoplasmic Reticulum (ER)
Rough Endoplasmic Reticulum (ER)
Necleous
Golgi apparatus
Cytoplasm
THIS SET IS OFTEN IN FOLDERS WITH...