Steve+D

flat =Cell Size Lab:= 1. Compare and contrast the three cubes after they were sliced in half. The agar had a depth of .5cm. covered in the liquid. 2. Which "cell" seemed to be most and least efficient at getting outside substances into the cell? Explain. The "cell" that was least effected was the bigger one because it had much more protection. 3. Which of your calculations seems to explain what you observed in your cell models? Why do you think so? The rate of diffusion calculation seemed to explain what had happened the most. I think this because it showed me that the cubes were effected at 1/2 cm. per minute. 4. Speculate on a relationship between cell size and efficiency. Your statement should resemble a hypothesis. (Remember: Use an If....., then..... statement.)If the cell is bigger in size/has a stronger membrane then it will be protected more so than a smaller cell.
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flat I have heard the saying “you are what you eat” many times before and this is what I think. In my opinion it means that if you don’t want to be healthy then don’t eat healthy. I feel that if you were to eat unhealthy you would be healthy; if you eat healthy then you will be healthy.

Is it ok to eat pizza twice a week or more?

Can I eat practically anything and exercise with it and still be healthy?

Why is there so many unhealthy foods now a days?

Unique properties of water

Reg water

First test 19

second test24

third test19

fourth test

soap water

second test18

third test18

fourth test19

=DNA Replication Model= media type="custom" key="25086106" flat Protein synthesis questions What are the steps of transcription? RNA polymerase comes in binds onto the DNA double helix and unwinds the double helix. Then RNA polymerase also creates a strand of mRNA, with the complementary nucleotides. After the mRNA strand is formed, the double helix reforms. The mRNA strand breaks off the template strand. The mRNA strand leaves through the nuclear pores and reaches the cytoplasm. Then the mRNA strand enters the ribosomes What are the steps of translation? The large and small subunits of the ribosome both bind with the mRNA strand. Then the ribosome begins at the start codon, which is AUG or methionine. The tRNA molecule has the correct anti-codon binds onto the right codon. As the ribosome moves down the mRNA strand, the amino acids attach to one another and form a peptide bond as each tRNA breaks off. The ribosome stops at the stop codon. The stop codon does not make an amino acid! The amino acid chain then forms a three dimensional figure, or its tertiary structure List three differences between DNA and RNA DNA has thymine, and RNA has uracil instead. DNA is double stranded, but RNA is only single stranded. DNA has deoxyribose as a sugar and RNA has ribose. List the three types of RNA. And state their function (what they do and where they do it) mRNA- relays the message from the DNA in the nucleus

rRNA- provides the ribosome, builds proteins in the cytoplasm

tRNA- transfers amino acid to the ribosomes in the cytoplasm
 * 1) What enzyme is used to produce a new strand of RNA? RNA polymerase
 * 2) Which molecule contains the genetic code? DNA

= Protein Synthesis Flip Book = media type="custom" key="25211592" Robertsonian Translocation 1. chromosomal mutation 2. ROB 3. None 4. 1 in 1000 5. it is a lack of genetic material that carries no health problems