1. What is Biology?

2. BIOLOGY the study of living things

3. 5 Characteristics of All Living Things

4. 5 Characteristics of Living Things
Made of Cells
Obtain & Use Energy
Grow and Develop
Respond to Environment
Reproduce

5. Number of Cells
Unicellular one cell
Multicellular- many cells

6. Plants: Photosynthesis
Obtain and Use Energy
Plants: Photosynthesis
Animals:
Cellular Respiration

7. Equation for Photosynthesis
6CO2 + 6H2O > C6H12O6 + 6O2
LIGHT
Carbon Dioxide and Water react with light to produce glucose and oxygen

8. Equation for Cellular Respiration
C6H12O6 + 6O2 ----> 6CO2 + 6H2O + ATP
Glucose + Oxygen yield Carbon Dioxide, Water and ATP (energy)

9. Grow & Develop
Metamorphosis
Puberty
Death

10. Respond to Environment
Do what it takes survive & maintain homeostasis
Ex. Put on a coat, plant bends toward the light

11. Types of Reproduction
Asexual one parent
Sexual two parents

12. Made of Cells

13. UNICELLULAR
Made of just ONE cell

14. Made of more than one cell
MULTICELLULAR
Made of more than one cell

15. Figure 1.5 Eukaryotic cells have a membrane bound nucleus. Nucleus
Prokaryotic cells do not have a membrane bound nucleus.
1.45 µm
0.29 µm
Nucleus

16. Reproduce

17. Two parents each provide a sex cell
SEXUAL REPRODUCTION
Two parents each provide a sex cell

18. Single organism reproduces without another
ASEXUAL REPRODUCTION
Single organism reproduces without another

19. Grow and Develop

20. Grow and Develop
Birth
Growth
Death

21. Obtain and Use Energy

22. Obtain and Use Energy
Photosynthesis
Cellular Respriation

23. Respond to their Environment

24. Respond to Environment
Movement
Behavior

25. Two parents each provide a sex cell
SEXUAL REPRODUCTION
Two parents each provide a sex cell

26. Single organism reproduces without another
ASEXUAL REPRODUCTION
Single organism reproduces without another

27. Who are we? We need structure We need to reproduce
We need to grow and develop
We need energy
We need to interact with the environment

28. Structure gives us function!
We need structure
Tissue
Cell
Structure gives us function!
Organ
Organelle
Molecule
Organism

29. We need to reproduce

30. We need to grow and develop

31. We need energy

32. We interact with the environment

33. What we will study: We need structure We need to reproduce
Molecular structure: Cell
We need to reproduce
Genetics
We need to grow and develop
Cell growth/replication
We need energy
Cell metabolism
We need to interact with the environment
Cell sensing/membrane interactions
Regulation

34. Who are we? Underlying theme: How are we different?

35. How are we the same?
Same basic molecular make-up (atoms, compounds, macromolecules, etc…)
Same genetic code:DNA
Similar genesproteins
Similar cell structure

36. How are we different? Evolution
Simple  Complex organisms
More genes  More proteins  More enzymes
Different genes  Different proteins  Different enzymes
More and different organelles  more and different cells  more and different tissue  more and different organs

37. Underlying theme: Evolution has created diversity
Who are we?
We need structure
We need to reproduce
We need to grow and develop
We need energy
We need to interact with the environment
Underlying theme: Evolution has created diversity
WE=ALL ORGANISMS

38. (where life is possible)
(living and non
living environment)
(All organisms in a
given place & time)
(A group of the same type
of organism living in the
same place and time)
(A living individual)
(Organs connected physically or chemically
that function together)
(A structure consisting of
tissues organized to carry out
specific functions)

39. (The fundamental
unit of life)
(A collection of
specialized cells)
(A membrane bound
structure within a
complex cell)
( A small group of joined atoms)
(The smallest chemical unit of a type of pure
substance or element)

40. The Cell Theory
Pattern Component of the Cell Theory: a pattern observed in nature
Cells are first described and identified – Hooke, 1665 and van Leeuwenhoek.
Plant tissues composed of cells – Malphigi, 1670's
Schleiden and Schwann – all organisms are composed of cells.

41. Figure 1.1 The first view of cells: Robert Hooke’s drawing from 1665
Anton van Leeuwenhoek was the first to view a single-celled “animalcules” in pond water.