Topic 1 Fundamentals of Biology

Question 1

1. All life forms have one or more cells
2. The cells is the basic structural, function, and organizational unit of life
3. All cells come from other cells (cell division)
4. Genetic information is stored and passed down through DNA

Answer 1

Modern Cell Theory

Question 2

• States that information is passed down from DNA -> RNA -> proteins

Answer 2

Central dogma of genetics

Question 3

• Self-replicating RNA molecules were precursors to current life
• RNA developed self-replication mechanisms and later could catalyze reactions, such as protein synthesis, to make more complex macromolecules
• RNA stores genetic information and catalyzes chemical reactions
• RNA is unstable due to its extra hydroxyl group making it more likely to participate in chemical reactions

Answer 3

RNA world Hypothesis