Controls most of the cell, processes and contains the hereditary information of DNA
100
What are cell walls made of?
Phospholipids
100
Cells are the ___________ of life
Basic building block / unit
100
What are one major difference between Eukaryotic and Prokaryotic cells?
Prokaryotic cells have membrane bound organelles, Eukaryotic cells keep their DNA in a nucleus, Eukaryotic cells are much larger than prokaryotic cells, Eukaryotic cells work together with other Eukaryotic cells.
100
What function does the chloroplast perform?
Capture energy from the sun and convert it into energy the plant can use by using photosynthesis
200
What function does the mitochondria perform?
It takes energy from food and makes it into high energy compounds that the cell can use
200
Why do cell membranes form?
half of what makes up a membrane is polar (attracted to water) and the other half is non-polar (hydrophobic)
200
Why are cells called cells?
Because the scientist to first examine them described them as tiny rooms or "cells"
200
What type of cell has a nucleus, cell wall, chloroplast, mitochondria, and an endoplasmic reticulum?
Plant cell
200
German scientist ___________ animals are also made of cells
Theodor Schwann
300
What limits a cell's size?
Surface area to volume ratio
300
What types of cells have cell membranes?
All of them
300
In 1665 who was one of the first people to look at cells under a microscope?
Robert Hooke
300
What is a major organelle that animal cells have and plant cells don't have?
Lysosomes
300
What is osmosis?
Diffusion of water through a selective membrane
400
what are the four basic things that all cells have?
Cell membrane, Ribosomes, Cytoplasm, and DNA
400
What is a way that cell membranes let things into /out of the cell?
Diffusion
400
In 1838 German botanist _________ concluded that all plants are made of cells
Matthias Schleiden
400
What type of cell has cytoplasm, ribosomes, free floating DNA, and a membrane?
A prokaryotic cell
400
What function do lysosomes perform?
they break down organelles and debris. Also they break down carbs lipids and proteins into a form the cell can use
500
Name six of the main organelles that all Eukaryotic cells contain?
What are the three main functions of the cell membrane?
Protect the cell from it's surroundings (keep whats in the cell in the cell), letting nutrients into the cell, getting waste and other harmful stuff out of the cell
500
In 1855 German physician Rudolf Virchow stated that ____________
Where a cell exists there must have been a preexisting cell
500
Why don't animal cells have cell walls?
Also why do plant cells have cell walls?
Cell wall limit movement of cells so animals would not be able to hunt, hide, or run
Plants don't need to move and they need the extra protection and support that cell walls provide