1. Why study biomedical biology?

Question 1

What is the first foundation of biology?

Answer 1

Evolution through natural selection - charles darwin

• All life evolved from preexisting life
• homology
• fossil

Question 2

How is the fossil record strong evidence for evolution?

Answer 2

Observe increasing complexity with the passage of time

Question 3

What does ‘ontology recapitulates phylogeny’ mean?

Answer 3

Development is a fast action replay of ancestry

-Early stages of embryos look similar and later embryos differentiate

Question 4

What does homologous mean?

Answer 4

Derived from a common ancestral feature?

Question 5

What were Darwin’s three observations?

Answer 5

Individuals in a population vary-fitness
Pass on traits (fitness) to offspring-heredity
Never enough resources-competition for survival and reproduction

Question 6

What is the 2nd foundations of biology?

Answer 6

Unity of biochemical processes

-All organisms share main biochemical reactions

Question 7

What are some examples of the unity of biochemical reactions?

Answer 7

1. All organisms have genetic material, the DNA that contains the instructions on how that organism will develop
2. Organisms have proteins to carry out these instructions

Question 8

What is the third foundation of biology?

Answer 8

CELL THEORY

• All known living things are made up of one or more cells.
• ALl living cells arise from pre-existing cells by division.
• The cell is the fundamental unit of structure and function in all living organisms
• Cells contain hereditary information DNA which is passed from cell to cell during cell division