Ch. 6 A Tour of the Cell Dynamic Study Module

plasmodesmata

Dye injected into a plant cell might be able to enter an adjacent cell through __________.

Subunits of ribosomes are assembled in the nucleolus and pass through the nuclear membrane via the nuclear pores.

What is the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?

Ribosomes, rough endoplasmic reticulum, and smooth endoplasmic reticulum

Which of the following groups is primarily involved in synthesizing molecules needed by the cell?

Chromosomes are only visible as a cell is about to divide. human skin cell.

Which of the following is false in respect to cells' chromosomes?

Ribosomes

Which of the following is present in a prokaryotic cell?

Components of the cytoskeleton often mediate the movement of organelles within the cytoplasm. have no membrane-bounded organelles in their cytoplasm

Which statement about the cytoskeleton is true?

secrete a lot of protein

You would expect a cell with an extensive Golgi apparatus to __________.

The intestinal cells are bound together by tight junctions.

Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why?

Peroxisomes

__________ are membrane-bound metabolic compartments that specialize in the production of hydrogen peroxide (H2O2) and its conversion to water.

in the rough endoplasmic reticulum

A protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized __________.

the plasma membrane

A substance moving from outside the cell into the cytoplasm must pass through __________.

centrosomes; centrioles

Animal cells have unique organelles called __________ that are composed of structures called __________.

have no membrane-bounded organelles in their cytoplasm

Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they __________.

nuclear envelope, the Golgi apparatus, lysosomes, and vesicles

Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they __________.

Cilia

Basal bodies are most closely associated with which of the following cell components?

plasmodesmata; gap junctions

Cell junctions in plant cells are called __________, and communicating junctions in animal cells are called __________.

with motor proteins

Cell motility, which includes changes both in cell location and in the movement of cell parts, requires interactions of the cytoskeleton __________.

of the geometric relationships between surface and volume

Cells are small because __________.

Motor proteins

Cilia and flagella move due to the interaction of the cytoskeleton with which of the following?

that mitochondria and chloroplasts have multiple copies of linear DNA molecules associated with their inner membranes

Evidence that supports the prokaryotic origins of mitochondria and chloroplasts are all of the following except __________.

Eukaryotic cells are compartmentalized, which allows for specialization.

In terms of cellular function, what is the most important difference between prokaryotic and eukaryotic cells?

muscle contraction, amoeboid movement, and cytoplasmic streaming in plants

Microfilaments function in cell motility including __________.

human skin cell

Observing a fluorescent micrograph cell with intermediate filaments would help you identify the cell as a __________.

nuclear envelope, the Golgi apparatus, lysosomes, and vesicles

The endoplasmic reticulum is part of the endomembrane system, which also includes the __________.

mitochondria and chloroplasts

The endosymbiont theory explains the origins of __________.

a middle lamella

The extracellular matrix of the animal cell has all of the following molecular components except __________.

to synthesize proteins that are secreted as glycoproteins

The function of the rough endoplasmic reticulum (RER) is __________.

is the cytoskeleton

The network of fibers that organizes structures and activities in a cell __________.

central vacuole

The organelle that is a plant cell's compartment for the storage of inorganic ions such as potassium and chloride is the __________.

nucleoid

The region of a bacterial cell that contains the genetic material is called the __________.

in the rough endoplasmic reticulum and in the Golgi apparatus

The walls of plant cells are largely composed of polysaccharides and proteins that are synthesized __________.