Shayna+D.

flat

Cell Size Lab
1. Compare and contrast the three cubes after they were sliced in half. After the cubes were cut the liquid barely went into the large cube and went farther into the middle cube. However, the liquid went all the way through the cube.

2. Which “cell”, seemed to be most and least efficient at getting outside substances into the cell? Explain. The 3x3x3 size cell was least efficient. This is because the cell is bigger and it takes longer for the substance to get all the way into the cell from the outside.

3. Which of your calculations seems to explain what you observed in your cell models? Why do you think so? Volume because it showed how far the liquid could go into the cell from all sides.

4. Speculate on a relationship between cell size and efficiency. Your statement should resemble a hypothesis. (Remember: Use an If....., then..... statement.) If a cell is bigger it will be less efficient to get substances through the cell. So if the cell is smaller it will be more efficient at getting substance through the cell.

Individual Protists
Blepharisma
 * The smallest they can be is 50 micrometers long.
 * When a Blepharisma feeds on a smaller member of the species they get gigantism and grow to unusual sizes. However, when they stop feeding on smaller members they go back to a normal size.
 * They can reproduce by ciliate conjugation, which is when two Blepharisma come in close contact and a cytoplasmic bridge is formed between them to pass genetic materials.

You are What you Eat
You are what you eat means, in my opinion, that what you eat will effect other aspects of your life. It could affect how you feel and your weight. So, if you something unhealthy then you will be unhealthy. If you eat fatty foods all the time then you will mostly likely be overweight. If you eat foods that are very sugar filled then you will probably be hyper.

There are many questions I have about food in the media and from my parents.
 * Is serving size actually the amount everyone is supposed to eat?
 * Are calories a bad thing to consume a lot of?
 * Is diet soda worse than normal soda?

DNA Replication
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Protein Synthesis
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Protein synthesis review
What are the steps of transcription? RNA polymerase binds to the start of a gene on the double helix and unwinds DNA into single-strands then RNA polymerase attaches complementary nucleotides on one strand, the next step after the one strand is matched with its complementary RNA strand the resulting molecule is called mRNA, the last step is that the mRNA molecule breaks off from the one strand and moves out of the nucleus into the cytoplasm to begin translation. 2. What are the steps of translation? First mRNA goes into the ribosome after that it reads the mRNA sequence and converts it into an amino acid sequence, then the mRNA sequences are read in sets of three nucleotides, next the ribosomes begins translation at the start codon composed of the nucleotide sequence, then tRNA molecules transfer the amino acid to the ribosome. After the tRNA with complementary anticodon binds to the codon temporarily, after the ribosome reads the next codon and another tRNA with a complementary anticodon binds, then a peptide bond joins the two amino acids as the ribosome continues down the mRNA strand so the first tRNA molecule falls off to leave its amino acid. Final the ribosome continues on until the stop codon were the last tRNA molecule falls off to leave a chain of amino acids, which will fold upon itself to form a tertiary structure. 3. List three differences between DNA and RNA. DNA is made of deoxyribose where RNA is made of ribose. RNA’s bases are A+U and G+C where DNA’s bases are A+T and G+C. 4. List the three types of RNA. And state their function (what they do and where they do it) tRNA- transfers amino acid to the ribosome, rRNA- reads RNA, mRNA- carries info to the ribosome 5. What enzyme is used to produce a new strand of RNA? RNA polymerase 6. Which molecule contains the genetic code? The DNA molecule Be sure you can transcribe a gene and determine the complementary amino acids. Be sure you can identify all the parts (see flip book requirement list) of both transcription and translation.