Notes for Exam 3

Notes for Exam 3 - February 3, 2011 Growth Binary Fission...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
February 3, 2011 Growth Binary Fission Cell Cycle: Going from one cell to two cells G1 Phase: GAP 1 S: Synthase of DNA G2: GAP 2 M: Mitosis Amitosis: Division without a nucleus Cell Division Daughter Cells There is no nucleus in prokaryotes Very slow= 3,000 reactions per second DNA is probably attached to the cell membrane HOW FAST ARE CELL CYCLES? ( Really important when it comes to food.) E coli: main one; 37 degress, it can divide into about one and a half cells in about 12 and a half minutes or 15 minutes Sal. Typhi: 37 degrees, cell cycle in 25 minutes, may be as long as 60 minutes Mycobacterium: cell cycle; 392 minutes-932 minutes (appox. 6 ½ hours to 12 hours) Treponema: cell cycle; 1980 minutes (33 hours) Concentration #cello/ml = 2 (each cell cycle, you double the population) Growth (time) 60 n= ------------------ ---- = 4 Generation time 15 Cells grow and multiply, they don’t know how not to (only grow if the conditions are right however)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
R= Reproduction D= death (when the cells stop growing)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Notes for Exam 3 - February 3, 2011 Growth Binary Fission...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online