Lab 5 Post Quiz
During DNA replication, - each parental strand serves as a template for the synthesis of a complementary strand - one daughter molecule ends up with two newly synthesized DNA strands - four identical DNA molecules are produced - replication begins at one end of the chromosome and continues all the way to the other end
each parental strand serves as a template for the synthesis of a complementary strand
The environmental sample plate was designed to compare bacterial growth in different humidity levels - true - false
false
After being sealed, your bacterial plats were - placed in the biohazard container - irradiated with UV light - heated to at least 212 F - incubated at appropriate temperatures for 48 hours then placed in refrigerator until the next lab
incubated at appropriate temperatures for 48 hours then placed in refrigerator until the next lab
What was the independent variable for the mutation experiment? - number of Petri dishes - bacterial growth - length of UV exposure - UV bulb brightness
length of UV exposure
The site of translation is - the Golgi apparatus - the cell nucleus - the plasma membrane - ribosomes in the cell nucleus - ribosomes in the cell cytoplasm
ribosomes in the cell cytoplasm
You can tell that this is an image of a DNA nucleotide and not an RNA nucleotide because you see a - double-stranded molecule, not a single-stranded molecule - uracil nitrogenous base, not a thymine nitrogenous base - phosphate group, not a uracil - thymine nitrogenous base, not a uracil nitrogenous base - sugar with two, and not three, oxygen atoms
sugar with two, and not three, oxygen atoms
Which of the following statements is true about double-stranded DNA? - the strands run in opposite directions - it contains ionic bonds - adenine and uracil are present in equal amounts - the two strands are said to be identical
the strands run in opposite directions
E. coli bacteria were mixed into the tube containing S> marcescens before you completed the quadrant streak isolation plate - true - false
true
Which materials were disposed of in biohazard containers? (Receptacles on tables or the large biohazard bag) - used swabs - pipettes - gloves - rolls of masking tape
used swabs, pipettes, gloves
Which of the following should have been done before transferring the live bacteria to Petri dishes? - wash your hands - put on googles and gloves - open each dish and set lid next to it - clean your area with 70% alcohol
wash your hands, put on goggles and gloves, clean your area with 70% alcohol
