In lab a small DNA molecule is constructed from a model kit. Which of the follow

Question

In lab a small DNA molecule is constructed from a model kit. Which of the following components was not used in the construction of the DNA mode? (What is not found in DNA) Select one: a. Deoxyribose b. Guanine base c. Phosphate d. Adenine base e. Uracil base In prokaryotic cells (bacteria), DNA replication would occur in the Select one: a. Cytoplasm b. Cell membrane c. Ribosome d. Nucleus e. Stroma Jane finds out that you have taken Bi 101 and asks you to explain what accounts for all the different types of cells in our bodies like muscle cells, nerve cells, red blood cells etc. Which of the following is the most accurate explanation? Select one: a. Different types of cells have different genes which makes them specialized. b. Different types of cells have the same genes. c. Different types of cells have the same collection of genes but different genes are active in each type of cell. d. Any cell type can become another cell type it just depends on where it is located n your body. e. A central processor in our brain determines the different types of cells produced. The discovery of the structure of DNA was a milestone in the history of science and required the efforts of many scientists over many decades. In the 1950's which scientist produced the clearest image of DNA using X-ray diffraction which ultimately helped explain the molecule's shape? Select one: a. James Watson b. Linus Pauling c. Francis Crick d. Rosalind Franklin e. Gregor Mendel The end result of transcription is the production of what? Select one: a. Protein b. Polypeptide chain c. DNA d. RNA e. amino acids

Explanation / Answer

Correct options are as below:

6) e - Uracil base (Uracil is found in RNA and not DNA)

7) a - Cytoplasm (Prokaryote cells lack a nucleus or membrane bound organelles, therefore the replication takes place in cytoplasm)

8) c - Different type of cells have the same collection of genes but different genes are active in each type of cell (gene expression and hence protein products varies in different cells and accounts for the different functions of cells)

9) d - Rosalind Franklin (the image is famously called as photo 51)

10) d - RNA (end result of transcription is the production of mRNA from DNA template)

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