A researcher studies normal human fibroblast cells. They can be maintained in culture but die off after about 30 cell generations. Unexpectedly, a colony of cells continues to survive and divide past 30 generations. Which scenario is most likely true for these cells?

Subject: Science and Technology (STS)

Cyberbullying is a common scenario experienced in this technological era. How do you protect your and other’s human rights in the face of changing social conditions and technological development by grounding yourself with the virtues of character? Discuss your answer.

The average human body contains 5.70 L of blood with a Fe2+ concentration of 2.10×10⁻⁵M . If a person ingests 10.0 mL of 25.0 mM NaCN, what percentage of iron(II) in the blood would be sequestered by the cyanide ion?

Express the percentage numerically.

Think about a bacterial cell entered the blood stream of a human. State the probable sequence of immunological interactions and responses that will occur in both innate and adaptive immune system and support your answer with molecules, receptors, pathways and cells involved. (200-300 words)

For each of the following users, (i) explain what accounting information they require about a business and (ii) name two statements or reports in which such information are available?

1. Investors
2. Banks
3. Production manager
4. Divisional manager
5. Human resource manager responsible for performance management

While human impacts on the ecology of our planet have been huge and often negative there are clear examples of where we have mitigated to a significant extent these negative impacts once we realized their importance for the health of life on earth. Give two examples.

• What is the premise of healthcare policies? (consider the following: past/current policies that impact provider-insurer shift)
• Is healthcare access a “human right” or a “privilege”? Provide a rationale.
• Who are the major players in health policies?
• How does health policy impact society?

Fertilization

Compare and contrast how the sperm penetrates the ovum in echinoderms and mammals. Why do you think echinoderm ova have more barriers in place for sperm penetration than mammalian ova?

Compare and contrast the roles of chemotaxis in abalone and human fertilization?

Most fungi that cause harm to humans are not obligate human pathogens. In other words, these fungi are not highly adapted to attacking humans. How and why do these fungi cause harm?

Define what the great oxygen catastrophe was and what organisms caused it and were affected by it.