OSSF Installer -Exam 1 | Question with 100%
Correct Answer
What enzyme must attach to a 2 stranded DNA molecule in order to function? -
✔️✔️DNA Polymerase
What type of DNA repair focuses on one base? - ✔️✔️BER (base excision repair)
What type of DNA repair occurs during replication? - ✔️✔️MMR (mismatch repair)
What type of DNA repair removes more DNA before fixing the damage? -
✔️✔️NER (nucleotide excision repair)
What ensures even distribution of molecules between daughter cells after mitosis?
- ✔️✔️Membrane proteins/lipids can float in fluid bilayer and diffuse within the
membrane
Where are phospholipids produced? - ✔️✔️smooth ER
What enzyme in the smooth ER creates symmetrical membranes? - ✔️✔️Scramblase
What enzyme(s) in the Golgi creates asymmetrical membranes? - ✔️✔️Flippase and
Floppase
True/False: glycolipids in the plasma membrane always face inside the cell. -
✔️✔️FALSE - they always face out of the cell
What is the exception to the rule of channel proteins being generally closed? -
✔️✔️K-leak channel proteins
What are the 3 DNA damage checkpoints in a cell cycle? - ✔️✔️Between G1 and S,
during S, during G2 after replication
What is required for a cell to move from G1 phase to S phase? - ✔️✔️SPF (s-phase
promoting factor)
Correct Answer
What enzyme must attach to a 2 stranded DNA molecule in order to function? -
✔️✔️DNA Polymerase
What type of DNA repair focuses on one base? - ✔️✔️BER (base excision repair)
What type of DNA repair occurs during replication? - ✔️✔️MMR (mismatch repair)
What type of DNA repair removes more DNA before fixing the damage? -
✔️✔️NER (nucleotide excision repair)
What ensures even distribution of molecules between daughter cells after mitosis?
- ✔️✔️Membrane proteins/lipids can float in fluid bilayer and diffuse within the
membrane
Where are phospholipids produced? - ✔️✔️smooth ER
What enzyme in the smooth ER creates symmetrical membranes? - ✔️✔️Scramblase
What enzyme(s) in the Golgi creates asymmetrical membranes? - ✔️✔️Flippase and
Floppase
True/False: glycolipids in the plasma membrane always face inside the cell. -
✔️✔️FALSE - they always face out of the cell
What is the exception to the rule of channel proteins being generally closed? -
✔️✔️K-leak channel proteins
What are the 3 DNA damage checkpoints in a cell cycle? - ✔️✔️Between G1 and S,
during S, during G2 after replication
What is required for a cell to move from G1 phase to S phase? - ✔️✔️SPF (s-phase
promoting factor)
