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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 ________________________.
Bacteria are _____________________________.
The nucleus stores ____________________________.
Which organelle breaks down old organelles?
What is a job of the cytoskeleton?
Helps a cell keeps its shape
What organelle makes proteins?
Which structure modifies, sorts, and packages proteins?
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?
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.
Particle transport that uses both energy and a transport protein that moves particles from low to high concentration is _____________ _______________?
Type of cell transport in which a molecule is engulfed or enters a vesicle and brought into the cell.
Describes relatively constant internal physical conditions of an organism.
List the levels of organization of an organism from simple to complex
Organ system (complex)
_______________________ is when molecules move from high concentration to low concentration.
Large molecules that cannot cross the lipid bilayer must use ____________________ to cross the membrane.
Prokaryotes have a ______________________ and its DNA is not enclosed in a nucleus.
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____________________.
Please note: You also need to find a picture the following cell stuctures:
(This one goes with the "please note")
Smooth Endoplasmic Reticulum (ER)
Rough Endoplasmic Reticulum (ER)
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