BLG 144 CORE MAIN EXAMINATION SET
QUESTIONS AND ANSWERS SURE A+
✔✔Ingestive feeding of protists - ✔✔Bacteria, Archaea
Microscopic animals
Other prostists
Photosynthesus
Ingesting packets of food
Absorbing organic molecules directly from the environment
✔✔Absorptive feeding of protists - ✔✔Take up nutrients from across their plasma
membrane DIRECTLY from the environment
Ex: Decomposers
✔✔How do protist reproduce - ✔✔Asexual reproduction
- Mitosis + cell division, fission
Sexual reproduction
- Meiosis
- Occurs intermittently
✔✔Alteration of generations - ✔✔Sporophyte --> Spore ---> Gametophyte --> Gamete
, ✔✔HIV causes - ✔✔AIDS
✔✔How does HIV cause AIDS - ✔✔- HIV decreases the amount of HT cells
- Decrease HT cells in the bloostream decreases effectiveness of overal immune
system
- Causes AIDS
- More susceptible to illness and sickness
✔✔Vaccines vs Antiviral drugs - ✔✔Vaccines: Trigger immune system response
Antiviral drugs: Directly inhibit replication of viral genome
✔✔3 types of single stranded RNA - ✔✔1. Positive sense
2. Negative Sense
3. Ambisense
✔✔Positive sense RNA - ✔✔Single-stranded RNA genomes ready for immediate
translation into proteins
✔✔Negative sense RNA - ✔✔RNA genomes that need to be converted into the proper
form to be made into proteins
✔✔How do virus progeny exit a cell? - ✔✔1. Bud through cell membrane
2. Cell lysis
✔✔Natural selection in viruses favour - ✔✔1. Ability to replicate within a host
2. Ability to be transmitted to a different host
✔✔How do viruses co-exist with a host cell? - ✔✔Enter a dormant state
Their DNA is still being integrated and replicated (if the cell is a diving cell)
Certain cues will initiate lysongeny or the lytic cycle
✔✔6 phases of virus replicated growth - ✔✔1. Attatchment to host cell and entry into
cytosol
2. Viral genome transcription and proteins are made
3. Viral genome is replicated
4. Virions are assembled
5. Exit from the cell
6. Transmission to a new host cell
✔✔viral protease - ✔✔Cleaves viral polyproteins to produce virion proteins and viral
enzymes; nucleocapside enzyme
✔✔RNA replicase - ✔✔an enzyme that can produce RNA from an RNA template
QUESTIONS AND ANSWERS SURE A+
✔✔Ingestive feeding of protists - ✔✔Bacteria, Archaea
Microscopic animals
Other prostists
Photosynthesus
Ingesting packets of food
Absorbing organic molecules directly from the environment
✔✔Absorptive feeding of protists - ✔✔Take up nutrients from across their plasma
membrane DIRECTLY from the environment
Ex: Decomposers
✔✔How do protist reproduce - ✔✔Asexual reproduction
- Mitosis + cell division, fission
Sexual reproduction
- Meiosis
- Occurs intermittently
✔✔Alteration of generations - ✔✔Sporophyte --> Spore ---> Gametophyte --> Gamete
, ✔✔HIV causes - ✔✔AIDS
✔✔How does HIV cause AIDS - ✔✔- HIV decreases the amount of HT cells
- Decrease HT cells in the bloostream decreases effectiveness of overal immune
system
- Causes AIDS
- More susceptible to illness and sickness
✔✔Vaccines vs Antiviral drugs - ✔✔Vaccines: Trigger immune system response
Antiviral drugs: Directly inhibit replication of viral genome
✔✔3 types of single stranded RNA - ✔✔1. Positive sense
2. Negative Sense
3. Ambisense
✔✔Positive sense RNA - ✔✔Single-stranded RNA genomes ready for immediate
translation into proteins
✔✔Negative sense RNA - ✔✔RNA genomes that need to be converted into the proper
form to be made into proteins
✔✔How do virus progeny exit a cell? - ✔✔1. Bud through cell membrane
2. Cell lysis
✔✔Natural selection in viruses favour - ✔✔1. Ability to replicate within a host
2. Ability to be transmitted to a different host
✔✔How do viruses co-exist with a host cell? - ✔✔Enter a dormant state
Their DNA is still being integrated and replicated (if the cell is a diving cell)
Certain cues will initiate lysongeny or the lytic cycle
✔✔6 phases of virus replicated growth - ✔✔1. Attatchment to host cell and entry into
cytosol
2. Viral genome transcription and proteins are made
3. Viral genome is replicated
4. Virions are assembled
5. Exit from the cell
6. Transmission to a new host cell
✔✔viral protease - ✔✔Cleaves viral polyproteins to produce virion proteins and viral
enzymes; nucleocapside enzyme
✔✔RNA replicase - ✔✔an enzyme that can produce RNA from an RNA template
