Download Additional Questions for Page 1 File

Unit 5 Scientific Article Questions
Protozoa Could Be Controlling Your Brain
Paragraph 1
The ancient debate surrounding the existence of free will appears
unresolvable….”
1. What is the difference between nature and nurture?
2. Design a study or investigation that could help us understand the role of nurture
versus genes in our development?
3. What type of organism is Toxoplasma gondii?
4. Identify the genus and species names for T. gondii?
5. Suggest why it important to classify organisms?
6. State the 7 taxonomic groups?
7. State the 5 Kingdoms?
8. Compare eukaryotic and prokaryotic cell structures.
9. Name the new theory did Carl Woese propose in the 1970s so that organisms could
be more accurately classified?
10. Describe how Archae differ from bacteria?
11. Suggest how this theory was critically evaluated?
Paragraph 2
“Natural Selection has given rise to pathogens that infiltrate the nervous
system….to achieve its ultimate purpose, replication.”
1. Define the term pathogen
2. Replication involves the production of new DNA molecules. Describe the process of
replication and name at least 2 enzymes involved in this process.
3. HIV is an example of a virus that replicates in its host cell. Describe how HIV
infects its target cell.
4. Explain how HIV replicates in its host cell.
5. State why is HIV called a retrovirus?
6. What is AIDS?
7. Explain why HIV leads to AIDS
Unit 5 Scientific Article Questions
Paragraph 3
“They infect muscle and brain to escape attacks by the host’s immune
system”
1. Explain how white blood cells help to fight infectious disease?
2. Suggest what the role of memory white blood cells is.
3. As well as white blood cells, our bodies have alternative ways of defending against
disease. Name 2 of these ways.
4. Toxoplasma cysts have a tough cell wall similar to plant cells. Plant cell walls contain
cellulose. Describe the structure of cellulose.
Paragraph 4
“Toxoplasmosis has been most thoroughly studies in rats and mice”
1. Compare the risks and benefits of using animal models in medical research.
“Spray a bit of cat urine into a corner and the rodent will avoid this location….”
2. What term is used to describe this behaviour?
3. Design an investigation to test the hypothesis that rats are afraid of the smell of
cat urine.
4. Explain why is this characteristic is a selective advantage.
Unit 5 Scientific Article Questions
Rodents Aren’t Superheroes
Paragraph 6
1. Summarise the behavioural adaptations of rats.
2. How might Webster and Sapolsky have ensured that their data were valid
3. State how Webser and Sapolsky’s research would have been distributed and
validated by the wider scientific community?
Paragraph 7
1. Define the term “genome”
2. Suggest 2 benefits of the human genome project.
3. What brain disorder is dopamine associated with?
4. Describe how dopamine enables the transmission of reward and pleasure signals in
the brain
5. What drug can be used to replace dopamine in the human brain and state what
enzyme is needed for this.
Paragraph 8
1. Explain what is meant by the term “Natural Selection?
2. Summarise Darwin’s theory of evolution in 4 points.
3. What correlation is suggested in paragraph 9?
4. Explain the difference between causation and correlation?