Question

cellbio Jeb_finel exam,senicrs fv )-Compatibility Mode besigaouReferences MailingRevietouwt to do Normal No Spa.. Heading 1 Heading2Title Parageaph Font Styles The following weblinks are provided for reference (04-08, 015-017) http://learn.genetics.utah.edu/content labs/gel/ True/False Indicate whether the statement is true or false. ü) Explain your choice in one or two sentences. (10 points F 1. Animals are eukaryotic but plants are prokaryotic The major difference between a prokaryotic cell and a eukaryotic cell is the presence of membrane bound organelles in eukaryotic cells. Since plant cells contain membrane bound organelles this makes them eukaryotic 2. If an organism is multicellular, it is an indication that it is also eukaryotic. 3. In the cell fractionation from the buccal mucosal cells, chloroplasts will precipitate in the same fraction as the mitochondria (This is a trick question, read carefully) ! Multiple Choice ij) Identify the choice that best completes the statement or answers the question. Et) Explain your choice in one or hea sentences. (77 points) 4. What is the role of ethidium bromide in gel electrophoresis? a to help DNA segments proceed smoothly in the gel b. to help linearize DNA c. to help DNA dissolve in the running buffer d. to make the DNA bands visible under the florescent light . What happens if you plug in the electrodes to the opposite outlets in gel electrophoresis? a DNA segments move slowes b. DNA segments move in the opposite direction c. DNA segments move faster d it does not interfere with the normal operation

Answer 1

2. THE STATEMENT IS TRUE.

THERE ARE VARIOUS UNICELLULAR EUKARYOTES,BUT MULTICELLULAR PROKARYOTES ARE NOT THERE.SO IF AN ORGANISM IS MULTICELLULAR, ITS AN INDICATION THAT ORGANISM IS A EUKARYOTE.

3 THE STATEMENT IS FALSE

BUCCAL MUCOSA DOES NOT HAVE CHLOROPLAST,CHLOROPLAST IS IN PLANT CELL,IN ANIMAL CELL CHLOROPLAST IS ABSENT.

MULTIPLE CHOICE QUESTIONS:

ETHIDIUM BROMIDE IS USED TO MAKE DNA BANDS VISIBLE UNDER FLORESCENT LIGHT.IT IS USED TO STAIN NUCLEUS,AS A FLORESCENT TAG.

DNA SEGMENTS MOVE IN THE OPPOSITE DIRECTION.

DNA WILL GO IN BACKWARDS DIRECTION IF THE ELECTRODES ARE PUT IN OPPOSITE OUTLET.