Create an account
What is interphase?
The cell grows to its mature size, makes a copy of its DNA, and prepares to divide into two cells. Two cylindrical structures called centrioles are also copied.
What are the four parts of mitosis? Explain.
-Prophase, Chromatin in the nucleus condenses to form chromosomes. The pairs of centrioles move to opposite sides of the nucleus. Spindle fibers form a bridge between the ends of the cell. The nuclear envelope breaks down.
-Metaphase, The chromosomes line up across e center of the cell. Each chromosome attaches to a spindle fiber at its centromere.
-Anaphase, The centromere split. The two chromatids separate, and each chromatid becomes a new chromosome. The new chromosomes move to opposite ends of the cell. The cell stretches out as the opposite ends are pushed apart.
-Telophase, The chromosomes begin to stretch out and lose their rodlike appearance. A new nuclear envelope forms around each region of chromosomes.
What is cytokinesis?
The cell membrane pinches in around the middle of the cell. The cell splits in two. Each daughter cell ends up with an identicle set of chromosomes and about half the organelles.
What is diffusion?
The method by which small molecules move across the cell membrane. The process by which molecules move from an area of high concentration to an area of lower concentration.
What is passive transport?
The movement of dissolved materials through a cell membrane without using cellular energy.
What are the four nitrogen bases? How do they pair?
Adenine, thymine, guanine, and cytosine.
Adenine and thymine, guanine and cytosine.
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together