Entries by Daphne Hanson

Single-cell organisms.

Single-cell organisms. Cells come in an amazing variety – single-cell organisms (like bacteria), cells of the immune system, the world’s largest cell, animal cells, plant cells, Natural Killer cells, cells with XXX chromosomes, and even cells that we could make a reality TV show with, like Cell Survivor: Livin’ On The Edge (like Archaeans ).  […]

The two-domain model.

The two-domain model. https://bmcecolevol.biomedcentral.com/articles/10.1186/s12862-017-1059-z What are the authors’ main reasons for supporting the three-domain model what reasoning do they present to keep the three-domain model strong enough to reject new evidence for the two-domain model? Do you see holes within their argument?   Williams et al (2013)    https://www.nature.com/articles/nature12779 What evidence do the authors present […]

The three-domain system.

The three-domain system. Zhou et al (2018) https://link.springer.com/article/10.1007/s00253-018-8831-x   word count on each 5 sentences In the Zhou et al (2018) paper, what are two arguments for the three-domain system that you find most compelling? What are two arguments for the two domain system Zhou et al (2018) paper, which system do believe more 3. […]

Functions of hormones 

Functions of hormones 1. What produces more urea? a cow or a wolf 2. Positive and negative feedback loops when regulating body temperature 3. What hormone is affected by the adrenal gland 4. A girl is under stress. State the symptoms and physical contractions 5. The pathway of urine from nephrons 6. Functions of hormones […]

sickle cell disease.

sickle cell disease. Describe how somatic gene therapy has been successful in combating sickle cell disease but has failed in other applications. Does genetic screening help people? Consider both the pros and cons of genetic screening in your answer. What happens if the kidneys excrete too much water Nitrogen must be excreted comes from where […]

Current trends in scientific research.

Current trends in scientific research. -Reflect on the course readings and current trends in scientific research. What intrigues you about the search for other life forms? Consider life at the cellular level. What similarities and differences in chemical processes would you expect to find? Provide details and refer to step-by-step metabolic processes in the textbook. […]