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They all are enclosed by a membrane, filled with DNA, and contain cytoplasm
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What do all cells have in common?
Which type of cell can only be in single-celled organisms?
Which type of cell can be in single- or multi-celled organisms?
Which type of cell contains membrane-bound organelles?
Which type of cell does not contain membrane-bound organelles?
All organisms are made of cells
All cells are made by other cells
The cell is the most basic unit of life
What are the 3 parts of cell theory?
The German scientist who first noted that plants are made of cells
The German scientist who first concluded that all living things are made of cells
The English scientist who first identified and named cells
The Dutch scientist who made lenses and was the first person to observe cells in greater detail
The German scientist who first proposed that all cells come from other, existing cells
The part of the cell that supports & shapes the cell, and positions the organelles
The organelle that contains DNA
The part of the cell surrounding the nucleus
The part of the cell that fills the space between the cell membrane and the nucleus. It contains mostly water, and many of the cell's chemical reactions happen here.
This organelle is the site of protein synthesis.
The organelle that folds and synthesizes proteins and lipids
The type of ER that is studded with ribosomes
The type of ER that doesn't contain ribosomes
The type of ER that does lipid synthesis
The organelle that packages, sorts, and delivers proteins.
Membrane-bound sacs that transport materials around the cell
The organelle that supplies energy to the cell
Fluid-filled sacs that store water and food molecules
Do plants or animals have larger vacuoles?
This organelle contains enzymes that defend the cell and break down damaged parts of the cell
Do plants or animals have lysosomes?
These organelles help in cell division
Do plants or animals have centrioles?
A strong, rigid layer surrounding the cell membrane. It provides support, shape, and protection to the cell.
Do plants or animals have cell walls?
The organelle that carries out photosynthesis
Cell membranes allow some things in the cell and not others. What is this property called?
What structure forms the cell membrane?
What are the heads of the phospholipid made of?
What forms the tails of the phospholipid?
Phospholipid heads are _____ molecules
Phospholipid heads are hydrophilic or hydrophobic?
Phospholipid tails are hydrophilic or hydrophobic?
This molecule found on the cell membrane strengthens it
This molecule extends through the cell membrane, forming channels
This molecule found on the cell membrane helps your body identify what type of cell it is
Fluid Mosaic Model
This model shows that the cell membrane is flexible and set up like tiles
What are cell receptors made of?
The molecules that bind to receptors.
The type of receptor found inside the cell
These receptors can interact with DNA & start protein production
The type of receptor found on the cell membrane. They send signals into the cell.
Allows molecules to move across the cell membrane without using energy
Movement of materials from areas of high to low concentration.
Describes the concentration of molecules between areas
Diffusion of water molecules
Same concentration of dissolved materials
Solution has a higher concentration of dissolved solids
The water concentration is higher inside the cell, so water moves out
Solution has a lower concentration of dissolved solids
The water concentration is lower inside the cell, so water moves into the cell.
Larger molecules use this to diffuse through openings in the cell membrane formed by transfer proteins
Moving down the concentration gradient
Moving from an area of high concentration to low concentration
Moving against the concentration gradient
Moving from an area of low concentration to high concentration
Transporting a substance from an area of low to high concentration using energy
What type of energy is used during active transport?
Moving large molecules into a cell by engulfing them into a membrane
Moving large molecules out of a cell