Chapter 7 Bio
Who was the first person to observe and identify a cell?
Which two people invented the first microscope?
Hans and Zacharias Janssen
Name the 3 types of electron microscopes?
TEM (transmission electron)
SEM (scanning electron)
STM (scanning tunneling)
cells that do not have a membrane enclosing their DNA
Cells that have a nucleus and other membrane-bound organelles
Name examples of eukaryotes
Protists, Fungi, Plants, and Animals have eukaryotic cells
what 2 structures in a cell produce energy?
mitochondria & chloroplast
how do we know plant cells are eukaryotic?
eukaryotic cells have organelles and membrane bound DNA and so do plants
all cells have ____ which ____
controls what enters and exits the cell
all cells have ______ that make ____
the living jelly-like material outside the nucleus
Name the 2 types of genetic material.
DNA & RNA
eukaryotic cells evolved from
what is the cell membrane composed of ?
define selectively permeable
property of the plasma membrane that allows it to control movement of substances into or out of the cell
which part of a cell produces ribosomes?
which part of a cell create structure?
cytoskeleton, cell wall, and central vacuole
what structure can only be found in a plant cell
which part of a cell stores water?
the movement of a substance from a higher concentration to a lower concentration
diffusion occurs until
dynamic equilibrium is reached
diffusion can be effect by
the heat makes diffusion ___
diffusion of water
three ways osmosis occurs
stays the same
when a substance must move from an area of lower concentration to an area of higher concentration
energy is requires to
move the substance through a carrier proteins
an example of an active transport is a
sodium potassium pump
moves things inside and outside of the cell
Chapter 7 Bio