Cells
What is the difference between the term unicellular and multicellular?
Unicellular organisms are those that are made up entirely of one cell. (ex. bacteria)
Multicellular organisms are those made up of more than one cell. (ex. humans)
What is a life function (how would you define it)?
A characteristic that all living things need to do in order to be considered a living thing.
What two scientists are credited for creating the cell theory?
Robert Hooke and Anton van LeewenHoek
What is a constant in an experiment?
A constant is something that always remains the same in an experiment.
What is the black platform of the microscope called?
The stage.
What types of cells would you find in plants?
Eukaryotic cells.
What is the name of the life function when organisms move a substance within their body?
Circulation/movement.
Who was the man who coined the term cells after looking at cork because they looked like the small rooms Monk's lived in called cells?
Robert Hooke
What is a control in an experiment?
The "normal", or baseline that you can compare the results to at the end of the experiment.
What is the difference between an abiotic factor and a biotic factor?
Abiotic factors are naturally occurring non-living things. Biotic factors are things that have lived, are currently living, or have the potential to live.
Can an orgainsm be one cell and survive on it's own? Why or why not?
Yes! All bacteria are unicellular. They preform all life functions in one cell!
Also some protists such as Euglena and Ameoba are unicellular.
What is the difference between ingestion and digestion?
Ingestion is the process of taking in food. Digestion is the process of breaking down food. All living things must do both in order to get the energy from the food, this just may look different in different organiams. Remeber fungi digest and then ingest!
Image a bacteria cell slowly splits from one cell into two daughter (smaller) cells. What part of the cell theory best describes this?
All cells come from pre-existing cells.
What is the difference between an independent and a dependent variable?
Independent: Component that YOU are changing.
Dependent: What you are measuring (the result of the experiment)
What side of the data table does the independent variable go on? What about the dependent variable?
The independent goes on the left, the dependent goes on the right.
What is the difference between a eukaryotic cell and a prokaryotic cell?
Eukaryotic cells are more complex, and have a nucleus. Prokaryotic cells are simpler and lack a nucleus. The nucelus holds genetic material/DNA. In Prokayotic cells the genetic material floats around the inside of the cell, no nucleus to hold it.
A human starts as an embryo and turns into a fetus before it is born. What life function is this?
Growth and development
( Reproduction makes the embryo!)
What are the three parts of the cell theory?
1. All living things are made of cells.
2. Cells are the basic unit of life.
3. All cells come from preexisting cells.
What was the dependent variable in the heart rate lab? How do you know?
Your heart rate; that is what we were measuring!
What is an example of an organism that has prokaryotic cells?
Bacteria.
What is a heterotroph? How is it different from an autotroph?
Heterotrophs are organisms that need to get food from other places. Autotrophs are organisms that are able to chemically create their own food.
Which life function best describes the human respiratory system? How?
Exchange of gases; humans breathe in/inhale oxygen, and release/exhale carbon dioxide.
What would you find in a cell? Are those things living?
Organelles (little structures within the cell), these are not alive, but work together to keep the cell alive (like organs).
Name 4 things that all graphs need.
1. Even intervals
2. A ruler
3. Title (both dependent and independent variable in it)
4. Labels
5. Key (if necessary)
DNA is found in the nucleus in eukaryotic cells. Do prokaryotic cells not have DNA? Explain.
No, they still do, it just floats around in the cytoplasm!