Cell Theory and Cell Types
What are all living things made of?
What word refers to the clarity of a microscope image?
Resolution
What organelle contains digestive enzymes?
Lysosomes
What type of transport requires no energy?
Passive Transport
What junction prevents leakage between cells?
Tight Junction
Which type of cell has no nucleus?
Which microscope type cannot view living cells?
Electron
Where are proteins made in the cell? (Two answers are possible)
Ribosomes, but RER is also acceptable.
What is the diffusion of water called?
Osmosis
What junction allows materials to pass directly between animal cells?
Gap Junction
What structure encloses all cells and regulates what enters and leaves?
Cell Membrane/Plasma Membrane
Which electron microscope shows 3-D surfaces?
SEM
What organelle stores and packages materials for transport?
Golgi Apparatus
In a hypertonic solution, what happens to the cell?
It shrinks.
What plant channels connect one cell to another?
Plasmodesmata
Which type of cell has larger ribosomes?
Eukaryotic Cells
What process separates organelles by spinning them at high speeds?
Cell fractionation
What organelle is responsible for forming the spindle fibers?
Centrosomes
What protein channels allow water movement?
Aquaporins
What cell-surface structure is important for cell-to-cell recognition?
Glycocalyx (or glycoproteins)
What theory explains how mitochondria and chloroplasts originated?
Endosymbiosis
What microscope is used to observe live, unstained cells?
Phase-contrast microscope
What two organelles have their own DNA?
Mitochondria and Chloroplasts
List 3 examples of active transport.
Pumps, exocytosis, pinocytosis, phagocytosis, recepter-mediated endocytosis
What are the 3 stages of a signal transduction pathway?
1. Reception
2. Transduction
3. Response