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Biology 1 Chapter 6
Terms in this set (30)
The cytoskeleton is
a network of fibers that organizes structures and activities in the cell
Cilia and flagella move due to the interaction of the cytoskeleton with which of the following?
Basal bodies are most closely associated with which one of the following cell components?
Of the following organelles associated with the endomembrane system, which group is primarily involved in synthesizing molecules needed by the cell?
ribosome, rough endoplasmic reticulum, smooth endoplasmic reticulum
The organelle that is a plant cell's compartment for the storage of inorganic ions such as potassium and chloride is the
Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why?
The intestinal cells are bound together by tight junctions.
The walls of plant cells are largely composed of polysaccharides and proteins that are synthesized
in the rough endoplasmic reticulum and the Golgi apparatus
Evidence that supports the prokaryotic origins of mitochondria and chloroplasts are all of the following except
that mitochondria and chloroplasts have multiple copies of linear DNA molecules associated with their inner membranes
Microfilaments function in cell motility including
muscle contraction, amoeboid movement, and cytoplasmic streaming in plants
A substance moving from outside the cell into the cytoplasm must pass through
the plasma membrane
You would expect a cell with an extensive Golgi apparatus to
secrete a lot of protein
Cell motility, which includes changes both in cell location and in the movement of cell parts, requires interactions of the cytoskeleton
with motor proteins
Cells are small because
of the geometric relationships between surface and volume
Dye injected into a plant cell might be able to enter an adjacent cell through
The function of the rough endoplasmic reticulum (RER) is
to synthesize proteins that are secreted as glycoproteins
Animal cells have unique organelles called __________ that are composed of structures called __________.
Which of the following is false in respect to cells' chromosomes?
chromosomes only appear as a cell is about to divide
The endoplasmic reticulum is part of the endomembrane system, which also includes the
nuclear envelope, the Golgi apparatus, lysosomes, and vesicles
Which statement about the cytoskeleton is true?
components of the cytoskeleton often mediate the movement of organelles within the cytoplasm
In terms of cellular function, what is the most important difference between prokaryotic and eukaryotic cells?
eukaryotic cells are compartmentalized, which allows for specialization
The endosymbiont theory explains the origins of
mitochondria and chloroplasts
A protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized
in the rough endoplasmic reticulum
Cell junctions in plant cells are called __________, and communicating junctions in animal cells are called __________.
plasmodesmata; gap junctions
Observing a fluorescent micrograph cell with intermediate filaments would help you identify the cell as a
human skin cell
What is the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?
subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores
Which of the following is present in a prokaryotic cell?
__________ are membrane-bound metabolic compartments that specialize in the production of hydrogen peroxide (H2O2) and its conversion to water.
The region of a bacterial cell that contains the genetic material is called the
The extracellular matrix of the animal cell has all of the following molecular components except
a middle lamella
Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they
have no membrane-bounded organelles in their cytoplasm
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