Chapters 3 and 4 Flashcards
(67 cards)
What does the term diflagellate mean?
With two flagelatte
What is a mononucleocyte?
Cell with a single nucleus
Cork cells were first identified by who?
Robert Hooke
Elimination of insoluble, nondigested particles by a cell is referred to as
Egestion
The transport of dissolved substances into cells to be used by the cells is
Absorption
What is the cell theory?
The cell is the basic unit of all living things
Cells perform all the function of living things
New cells come from the reproduction of existing cells
Organisms that are made up of cells that can operate independently but that normally tend to group together are called
Colonial organisms
Several tissues grouped together and working as a unit form an
Organ
Describe a prokaryotic cell.
Bacteria, blue green algae, some similar organisms; lack membrane around nucleus area, contain only non membrane bound organelles
Describe a eukaryotic cell.
Membrane bound nucleus, both membrane bound and non membrane bound organelles in it, human, plant, animal, many others all eukaryotic cells
The changing of the sol and gel phase of the cytoplasmic matrix can result in organelle movement called
Cytoplasmic streaming
Organelles found in most plant cells but not in animal cells are
Vacuoles
Chloroplasts contain
A complex system of flattened sacs called thylakoids which are arranged into sacs called grana, which contain chlorophyll
Describe all the structures within an animal cell.
Picture in book
A cytoskeleton is made up of
Microscopic fibers, microtubules, which are straight and hollow tubes of proteins, and microfilaments, which are thinner, solid strands of protein
The process by which large molecules enter a cell through pouches in the cell membrane is
Pinocytosis
The cytoplasm’s long tubular extensions contain a set of microtubules and that are used in cellular movement are
Microfilaments
The diffusion of water into a cell by osmosis results in a build-up of
Turgor
Describe cell turgor pressure.
Kept crisp by central vacuole being filled with water and putting pressure on everything else
Contractile vacuoles would be of great importance to a what kind of unicellular organisms?
Ones that are underwater
The control center for most cell activity is the
Nucleus
A solution that has a greater concentration of water molecules than the cell is surrounds is
Hypertonic
Since diffusion is a purely physical process (it requires no cellular energy), it could be a form of
Passive transport
The use of cellular energy to change permeability of a membrane is called
Active transport
