Describe what you see, why do you think this occurs and how?

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Presentation transcript:

Describe what you see, why do you think this occurs and how?

Or this.

Why did this kidney grow? compensatory hypertrophy - increase in size of an organ or part of an organ or tissue, when called upon to do additional work or perform the work of destroyed tissue or of a paired organ.

How did this? Become this!

Answer…. Cell Reproduction

Cell Reproduction We make 2-trillion cells a day Exact copies of each other Why cells reproduce: 1.You grow, organ/ tissues grow, cells grow 2.Some cells die or are damaged 3.Keep you healthy

Cell Maintainance Work of cells done by proteins Cells too large to maintain -> they divide at certain size Helps repair wounds by cell division

Chromosomes Cell Activity directed by DNA - DNA organized by genes (segments of DNA) which code for RNA and protein -DNA is condensed/ organized and packaged into Chromosomes Prokaryotic Cell – Single Molecule of DNA Eukarytoric Cell – condensed into Chromosomes -human has 46

DNA and Proteins make up Chromatin 1 st packaging -> histones (Protein) Nucleosome – histone core and DNA around it Chromsomes exist as coiled or uncoiled -condense (Chromatid) before they divide *(not tangled) Chromatid held together by Centromere.