For your first assignment, I would like you to go outside and find the following objects Photograph them or draw them and write about them in a little paragraph of no more than a third of a page. You may answer in the form of a type written response under your photo, OR you may write it out in hand writing and draw your answers.
1. Find something dead. How do you know it is dead?
2. find something alive. What is it about this object that makes it alive?
3. Find something that has never, ever been alive. What characteristics does this object have that tells you that it is neither dead nor alive. It is nonliving.
4. Find something that is not alive, but an important PART of something alive. Explain your answer
5. What is something that is not alive but a living thing depends upon it to survive?
Look at your responses and ask yourself: What is the criteria of being alive?
Criteria for living things:
What are the criteria for living things?
1. MOTILITY - the ability to move
2. IRRITABILITY - it responds to stimulus
3. REPRODUCTION - it can reproduce and make offspring
a. it can grow
b. it can make another one of itself
4. It is made of CELLS
5. a. HAS METABOLISM -total of all biochemical reactions
occurring in a living thing. If metabolism stops...then thatis death.
b. TAKES IN NUTRIENTS and MAKES WASTE
CELLS (definition)
-A membrane bound organism that has cytoplasm and genetic material. It also has METABOLISM happening inside it.
-ORGANISMS CAN BE UNICELLULAR (made of a single cell) or MULTICELLULAR (made of many cells)
-ORGANISMS CAN BE EUKARYOTES or PROKARYOTES
Eukaryotic cells have DNA inside a nucleus. Prokaryotic cells have DNA in the cytoplasm but no nucleus. Prokaryotes are bacteria
Eukaryotes are animals, plants, fungi, unicellular protozoans, seaweed.
6. CELLS have HOMEOSTASIS - maintaining the status quo for temp,
pH, levels of hormones, levels of enzymes.
7. CELLS CAN adapt to change in the environment.
Organelle systems provide everything for the cell
1. energy for the cell - this is in the form of ATP made
by mitochondria.The mitochondria needs GLUCOSE and OXYGEN.
GLUCOSE IS FROM DIGESTIVE SYSTEM.
OXYGEN IS FROM SYSTEM AND
RESPIRATORY SYSTEM.
2. eating and drinking - cell receives building blocks such as
AMINO ACIDS, LIPIDS, NUCLEIC ACIDS from the
DIGESTIVE SYSTEM AND CIRCULATORY SYSTEM
3. waste is taken away by diffusion
4. communication for the cell
5. cells defend themselves
6. Reproduction of the cell
ANY ANIMAL CELL inside a mammal...
Eating building material such as amino acids, lipids nucleic acids
Energy: glucose and oxygen goes to mitochondria and carbon
dioxide leaves mitochondria
Waste: ammonia and water
Drinking water
cell product: made by the cell as specified by the DNA. For example,
a pancreatic cell makes INSULIN
