BIO 105/106 Introduction Part 01

BIO 105/106

Introductory Lecture





Coming soon:
            -Quiz 1
       
  Properties of life:

      - Order
                   - non life also have this property (machines)
       - adaptation to stimuli
                   - sun tan
                           I misspoke and said skin created melanocytes in response to sun. It is actually
                           the melanocytes that produce melanin in response to the sun (That is more
                           correct).
                   - The Earth responds to stimuli as well
       - Reproduction
                  - Viruses also reproduce (also prions)
      - Regulation
               - rabbits “radar-like” ears can either lay down and keep the rabbit warm or they can
                 stand up and radiate extra heat
               - regulation is similar to adaptation
      - Energy Processing
               - Machines can process energy
      - Growth
               - non life can grow (lakes can grow when it rains, Mountains can grow)
               - Life grows either through hypertrophy or mitosis
      - use DNA
               - Viruses also use DNA (non-life)
               - DNA is a feature that is common to all cells
               - All cells are also encased by a plasma membrane
      - Cell is smallest unit that carries all traits of life
                  - There can be dead cells so “cell” cannot be the definition of life
                  - Two major types of cells: Prokaryotes and Eukaryotes
                          - Prokaryotes do not have their DNA encased by a membrane enclosed nucleus
                          - Eukaryotes have a nucleus

Side Note: We look at the many properties of life because life is so hard to define. Iddo, Assistant professor of Microbiology at Miami University insists that we can define life in at least seven words:

 " Life is autonomous self-reproduction with variations."

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QUIZ: Biology Pretest

1. Science assumes that natural laws (such as the law of gravity):
apply uniformly through space and time
change with time
apply in a lab, but not nature
differ according to location

2. A toad burrows into the mud to stay cool in the summer, this is an example of a living organism's ability to:
reproduce
maintain homeostasis
have metabolism
be organized

3. The smallest unit of life is the:
atom
organelle
molecule
cell

4. An organism found in the fish tank was green, unicellular and autotrophic - it would most likely be classified as a(n):
bacteria
fungi
plant
protest

5. The tissues of the body are organized into:
cells
body systems
organs
organelles

6. Organisms that do not have a membrane bound nucleus are called:
prokaryotes
eukaryotes
heterotrophs
autotrophs

7. All living things must:
move
reproduce
be symmetrical
breathe

8. A scientist is studying whether cows will produce more milk when given an experimental drug. He gives 100 female cows the drug and then tests their milk production. Which of the following would be a good control group?
100 male cows given the drug
100 male cows not given the drug
100 female cows not given the drug
100 goats


Score =
Correct answers:

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