Introduction to Cells 2
Terms
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- This type of microscope scatters electrons off the sample and is used to look at surface details of cells and other structures___________.
- Scanning electron Microscope
- Molecular machine that makes protein molecules are called?
- Ribosoomes
- A continual exchange in materials takes place between _______________,________________,______________ and the ________________.
- Endoplasmic Reticulum, Golgi apparatus, Lysosomes and Outside cell
- What are organelles?
- separate recognizable substructures that are hard to see under a microscope.
- Membrane surronding the organelles are called____________.
- Internal Membrane
- Recieves and often modifies chemically the molecules made in the endoplasmic reticulum is the __________________.
- Golgi Apparatus
- __________ have the simplest structure and come closes to showing us life stripped down to its essentials.
- Bacteria
- This type or microsope looks at thin sections of tissue and transmits beams of electrons rather than light ___________.
- Transmission electron microscope
- The external membrane is called the______________.
- Plasma Membrane
- The organells that generate energy fo the eucaryotic cell_______________. Appears sausage like. Contain their own DNA and reproduce by dividing into two.
- Mitochondria
- The work of Prokaryotes is divided into two domains: ____________ and ___________.
- Eubacteria and Archaea
- Nucleus
- The most prominent organell in a eukaryotic cell.
- Cytoplasm
- Clear liquid that holds the organelles.
- Large green organells that are found only in the cells of plants and algae. Contain their own DNA and reproduce by dividing into two.
- Chloroplasts
- What does Prokaryotes lack?
- Nucleus
- _________ are typically spherical, rodlike, or corkscrew-shaped, small and contains a protective coat.
- Bacteria
- An irregular maze of interconnected spaces enclosed by a folding membrane is the ____________.
- Endoplasmic Reticulum
- Site where most cell membrane components, as well as materials destined for export from cell are made in the ___________________.
- Endoplasmic Reticulum
- Stacks of flattened membrane-enclosed sacs are ____________.
- Golgi Appratus
- What does Eukaryote contain?
- Nucleus
- _____________ are small irregularly shaped organelles in which intracellular digestion occurs, releasing nutrients from food particles and breaking down unwanted molecules for recycling and excretion.
- Lysosomes
- _____________ are small, membrane-enclosed vesicles that provided a contained environment for reactions with Hydrogen peroxide.
- Peroxisomes
- _____________ are the most diverse of cells.
- Prokaryotes
- The process for which cells are engulfed into the cell is called?
- Endocytosis
- The process for which the cells contents are released from the cell is called?
- Exocytosis
- what has a double membrane bound organelle and contains chromosomes?
- Nucleus
- What membrane bound organelle is the site of oxidative phosphorylation?
- Mitochondrion
- What large green membrane bound organelle is the site of Photosynthesis?
- Chloroplasts
- What large membrane structure is the site of protein synthesis and modification and membrane synthesis?
- Endoplasmic Reticulum
- What membrane bound organelle modifies proteins and directs proteins to other locations in the cell or to the outside.
- Golgi Apparatus
- What membrane bound organelle is the site of intracellular digestion?
- Lysosomes
- What membrane bound organelle contains hydrogen peroxide used in various chemical reactions.
- Peroxisomes
- Located outside the nucleus and other organells this concentrated aqueous gell of large and small molecules is called.
- Cytosol
- A network of filaments giving the cell shape and form is called____________?
- Cytoskeleton
- Thinest of the filaments are called____________.
- Actin filaments
- This filament generates contractile forces within the cell.
- Actin Filament
- Thickest filaments are called ____________.
- Microtubules
- This filament helps pull the duplicated chromosomes in opposite directions and distributes them equally to the daughter cells.
- Microtubules
- What filament serves to strengthen the cell mechanically?
- Intermediate filament