Cells Chapter 5 Part 1
Basic unit of structure and function of all living things
Who developed a better microscope in the early 1600's?
Anton van Leewenhoek
Who discovered small boxes in a piece of cork and called them cells in 1665?
Why did Robert Hooke call the small boxes in a piece of cork, cells?
Because that's where Monks lived
Why do we need microscopes?
To see cells
Who observed a dark structure near the center of the cell and called it the nucleus in 1833?
Who said all plants are made of cells in 1838?
Who said all animals are made of cells in 1839?
Who said cells come from preexisiting cells in 1855?
Order of the scientists?
Anton Van Leewenhoek
The 3 theories of Cells?
All living things are made of cells
Cells are organisms basic unit of structure and function
Cells come from preexisting cells
Why aren't our cells larger?
Because they'd be too big to move in and out
Store DNA, protein molecules and internal structures to survive and produce
Surface area to obtain nutrients and dispose wastes
life arises from non-life
Why is rain an example of Spontaneous Generation?
Because people thought that rain made worms, but it's because worms come up from the ground when it rains so that they don't drown.
Who did the Spoiled Meat Experiment?
What did people think was true about the Spoiled Meat Experiment?
That flies came from meat
What were the 3 trials done in the Spoiled Meat Experiment?
Cheesecloth Covered Jar
What did the Cheesecloth Covered Jar have as a result in the Spoiled Meat experiment?
flies and maggots outside of the jar
What did the sealed Jar have as a result of the Spoiled Meat Experiment?
No flies or maggots
Conclusion as to why meat doesn't make flies?
The flies were attracted to the meat because of the scent. They landed on the meat, laid eggs, and produced more flies.
Who did the 1st Broth Experiment?
How was the 1st and 2nd Broth Experiment performed?
Boiled Broth to kill organisms
What 2 trials were done in the 1st Broth Experiment?
What were the results of the Open Flask in the 1st Broth Experiment?
What were the results of the Sealed Flask in the 1st Broth Experiment?
Explanation as to why one flask was cloudy and the other one wasn't in the 1st Broth Experiment?
The one that was left open, air made it cloudy. Air didn't touch the sealed one so it wasn't cloudy.
Who perfomed the 2nd Broth Experiment?
How did the 2nd Broth Experiment change from the 1st one?
The flask were made into 2 different shapes.
How come one flask was cloudy and the other one was clear in the 2nd Broth Experiment?
There's particles in the air that made it cloudy
Cells Chapter 5 Part 1