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These microscopes are ideal for generating true-color views of living or preserved cells.
Transmission & Scanning electron microscopes
These microscopes are useful to look at smaller structures due to their high capability of magnification.
structures in cells that manufacture proteins
forms a boundary between the cell and its environment.
the cell membrane encloses the _________ and includes all cell contents (except the nucleus).
This is the fluid portion of the cytoplasm
These organisms are the simplest, most ancient forms of life. Their cells lack a nucleus and other membrane bound organelles.
These organisms have cells that contain a nucleus and other membrane bound organelles.
This structure is found in bacteria cells and is the area where the cell's circular DNA molecule congregates.
This structure is rigid, surrounds the cell membrane, and protects the cell. It is can also help maintain cell shape and prevent the cell from bursting if it absorbs too much water. (Bonus - what cells HAVE this and which cells DON'T)
Tail-like appendages that help some bacteria move. (Note - other organisms may also have these)
Also referred to as "little organs," these structures are compartments that carry out specialized functions in a cell.
A double layer of phospholipids. Is a major constituent of the cell membrane and contains hydrophilic heads and hydrophobic tails.
A cell membrane is often called _____________ because many of the molecules drift laterally within the bilayer.
These are specialized proteins in the cell membrane that create passageways through which ions, glucose, and other polar substances pass into or out of the cell.
These are specialized proteins that facilitate chemical reactions that otherwise would proceed too slowly to sustain life.
Carbohydrates attached to the cell surface proteins and serve as "nametags" that help the body's immune system recognize its own cells.
These membrane proteins enable cells to stick to one another.
These proteins bind to molecules outside the cell and trigger a response inside of the cell.
This system consists of the cell's internal membranes and organelles consisting of nuclear envelope, endoplasmic reticulum, Golgi apparatus, lysosomes, vacuoles, and cell membrane, coordinated together.
Small membranous spheres that transport materials inside the cell. They can pinch off from membranes and fuse with other organelles or the cell membrane.
The membrane bound organelle in eukaryotic organisms that contains DNA.
Holes in the nuclear envelope where mRNA exit the nucleus.
The double membrane structure that separates the nucleus from the cytoplasm.
Located inside the nucleus and is a dense spot that assembles the components of ribosomes.
endoplasmic reticulum (ER)
A network of sacs and tubules composed of membranes. This complex organelle originates at the nuclear envelope and winds throughout the cell.
Ribosome-studded portion of the ER where secreted proteins are synthesized.
Portion of the ER that produces lipids and detoxifies poisons. It contains NO ribosomes.
Sac of flat membrane-enclosed sacs that functions as a processing center.
Organelles that dismantle and recycle food particles, captured bacteria, worn-out organelles, and debris.
Organelle found in plants that is similar to lysosomes. In large plants, it contains a watery solution of enzymes that degrade and recycle molecules and organelles.
Organelles that contain several types of enzymes that dispose of toxic substances. Similar to lysosomes, but originate at the ER.
The cell's powerhouse. This organelle uses cellular respiration to extract energy from food to be used by the cell.
Inner folds of the mitochondria's membrane.
The site of photosynthesis in eukaryotes.
Framework of protein rods and tubules in eukaryotic cells.
Component of the cytoskeleton; intermediate in size in between a microtubule and a microfilament
Component of the cytoskeleton; made of subunits of the protein tubulin.
Part of the cell that organizes microtubules
Component of the cytoskeleton; made of the protein actin.
Short movable protein projections extending from a cell. (short numerous extensions resembling fringe)
Connections between plant cells that allows cytoplasm to flow between them.
Connection between two adjacent animal cells that prevents fluid from flowing past the cells.
anchoring (or adhering) junction
Connection between two adjacent animal cells; anchors intermediate filaments in a single spot on the cell membrane. (similar to a rivet)
Connection between two adjacent animal cells that allows cytoplasm to flow between them.
Which widely-accepted set of ideas claims that all living things are made of very similar simple units with very similar characteristics?
A preservationist worldview is best described by...
2. b) As a cell increases in size, which increases more rapidly, its surface area or its volume?
What is the rough ER's functions?
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