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

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

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 otherWhy cells reproduce:1. You grow, organ/ tissues grow, cells grow2. Some cells die or are damaged3. 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 ChromosomesProkaryotic Cell – Single Molecule of DNAEukarytoric Cell – condensed into Chromosomes-human has 46

DNA and Proteins make up Chromatin

• 1st 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.