The Discovery of the Cells
Cells are the basic units of structure and _____________________ in living things.
function
A microscope that uses light and two lenses is called a __________________.
Compound microscope
The functions of a eukaryotic cell are managed by the ___________________________.
nucleus
What is the plasma-membrane made of?
A phospholipid bilayer
True or false: diffusion can be both active and passive transport.
False. It is passive
Who coined the term "cells"?
Hooke
What do microscopes use to focus and magnify an image?
Two glass lenses
Which organisms do not have cell walls?
Animal cells
Because the phospholipid molecules and some proteins are free to move, the plasma membrane is said to be a _________ ________ model.
Fluid mosaic
Name the two types of active transport we talked about in class
Endocytosis and exocytosis
Prokaryotic cells do not have a nucleus or membrane-bound organelles. Eukaryotic cells do.
What do you carry a microscope by?
The arm and the base
In a cell, the breakdown of molecules in order to RELEASE ENERGY (ATP) occur in the ________________________________________.
mitochondria
True or false: Passive transport is when the movement of molecules goes against the concentration gradient.
False
If a cell is placed in saltwater, water leaves the cell by ___________________.
Osmosis
Who concluded that all plants are made of cells and formed the basics of cell theory?
Schleiden
What part of the microscope do you look into?
The ocular lens
What organelle makes and transports proteins?
endoplasmic reticulum
What macromolecule sits in the membrane to make the membrane stable enough so it doesn’t fall apart, but still flexible enough for the cell to move and work properly.
Cholesterol
into
What are the 3 tenets of cell theory?
1. Cells are the basic structure and function of all living things.
2. All living things are made of cells.
3. All cells come from other cells.
What part of the microscope focuses light?
Diaphragm
Which organelle is responsible for building proteins?
Ribosomes
1 phosphate and 1 fatty acid (lipid) tail
The phosphate is hydrophilic
The lipid tail is hydrophobic
True or false: all particles can flow in and out of the cell.
Cell membrane helps cells maintain stable internal balance called ________________.
False
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