Podcast
Podcast
Podcast
Something went wrong
Questions and Answers
Questions and Answers
Match the prefixes or suffixes with their meanings:
Match the prefixes or suffixes with their meanings:
chloro- = green mito- = thread -cyte (or cyto-) = cell eu- = true, good a- (or an-) = without, lack of, not ex- = out of endo- = inside, inner
Match the prefixes or suffixes with their meanings:
Match the prefixes or suffixes with their meanings:
water = aqu- (or aqua-) two = bi- across = trans- body = -some (or soma-) between = inter- little, small = -elle color = chrom-
Match the prefixes or suffixes with their meanings:
Match the prefixes or suffixes with their meanings:
micro- = small hyper- = above, greater than -plasm = formed substance -phyll = leaf phago- = eat hypo- = below, less than sym- = same
What is the function of the smooth ER?
What is the function of the smooth ER?
What is the function of the rough ER?
What is the function of the rough ER?
What is the function of the Golgi apparatus?
What is the function of the Golgi apparatus?
What is the function of lysosomes?
What is the function of lysosomes?
What is the route of the endomembrane system?
What is the route of the endomembrane system?
Which of the following proteins are synthesized by bound ribosomes? (Select all that apply)
Which of the following proteins are synthesized by bound ribosomes? (Select all that apply)
Proteins that are secreted from a eukaryotic cell must first travel through the endomembrane system, beginning with __________.
Proteins that are secreted from a eukaryotic cell must first travel through the endomembrane system, beginning with __________.
Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is __________.
Beginning within the nucleus, the first step leading to the synthesis of a polypeptide is __________.
The outer surface of smooth ER lacks ribosomes, whereas the outer surface of rough ER has ribosomes.
The outer surface of smooth ER lacks ribosomes, whereas the outer surface of rough ER has ribosomes.
What is the ratio of the volume of typical eukaryotic to prokaryotic cells?
What is the ratio of the volume of typical eukaryotic to prokaryotic cells?
Which statement correctly describes an endomembrane function?
Which statement correctly describes an endomembrane function?
The diameter of a typical eukaryotic cell is approximately ten times the diameter of a typical prokaryote. Which statement describes this?
The diameter of a typical eukaryotic cell is approximately ten times the diameter of a typical prokaryote. Which statement describes this?
What is found in prokaryotic cells?
What is found in prokaryotic cells?
What is found in eukaryotic cells only?
What is found in eukaryotic cells only?
What is present in both eukaryotic and prokaryotic cells?
What is present in both eukaryotic and prokaryotic cells?
In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are?
In eukaryotic flagella, the fibers that slide past one another due to the activity of dynein proteins are?
Many cell organelles, most notably the nucleus, are anchored by __________ which are assembled from a diverse class of proteins.
Many cell organelles, most notably the nucleus, are anchored by __________ which are assembled from a diverse class of proteins.
Centrosomes are sites where protein dimers assemble into __________.
Centrosomes are sites where protein dimers assemble into __________.
The extension of pseudopodia in amoeba is due to the regulated assembly and destruction of __________.
The extension of pseudopodia in amoeba is due to the regulated assembly and destruction of __________.
During muscle contractions, myosin motor proteins move across tracks of __________.
During muscle contractions, myosin motor proteins move across tracks of __________.
Choose the letter that indicates the organelle that contains most of a cell's DNA.
Choose the letter that indicates the organelle that contains most of a cell's DNA.
Which of these organelles carries out cellular respiration?
Which of these organelles carries out cellular respiration?
Which of these is the double membrane that encloses the nucleus?
Which of these is the double membrane that encloses the nucleus?
The __________ is composed of DNA and protein.
The __________ is composed of DNA and protein.
Ribosomal subunits are manufactured by the __________.
Ribosomal subunits are manufactured by the __________.
__________ are the sites of protein synthesis.
__________ are the sites of protein synthesis.
Which of these organelles manufactures proteins bound for secretion out of the cell?
Which of these organelles manufactures proteins bound for secretion out of the cell?
The __________ is a selective barrier, regulating the passage of material into and out of the cell.
The __________ is a selective barrier, regulating the passage of material into and out of the cell.
Where is calcium stored?
Where is calcium stored?
Which of these structures stores, modifies, and packages products?
Which of these structures stores, modifies, and packages products?
Which of these are hollow rods that shape and support the cell?
Which of these are hollow rods that shape and support the cell?
_____ is/are identical in structure to centrioles.
_____ is/are identical in structure to centrioles.
Which of these organelles produces H2O2 as a by-product?
Which of these organelles produces H2O2 as a by-product?
Which of these provides the cell with structural support?
Which of these provides the cell with structural support?
Mitochondria and chloroplasts are part of the endomembrane system of the eukaryotic cell.
Mitochondria and chloroplasts are part of the endomembrane system of the eukaryotic cell.
Choose the best description of the cell cytoskeleton.
Choose the best description of the cell cytoskeleton.
Which of the following is present in a prokaryotic cell?
Which of the following is present in a prokaryotic cell?
The endoplasmic reticulum is part of the endomembrane system, which also includes the __________.
The endoplasmic reticulum is part of the endomembrane system, which also includes the __________.
The walls of plant cells are largely composed of polysaccharides and proteins that are synthesized __________.
The walls of plant cells are largely composed of polysaccharides and proteins that are synthesized __________.
Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why?
Your intestine is lined with individual cells. No fluids leak between these cells from the gut into your body. Why?
A protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized __________.
A protein that ultimately functions in the plasma membrane of a cell is most likely to have been synthesized __________.
The region of a bacterial cell that contains the genetic material is called the __________.
The region of a bacterial cell that contains the genetic material is called the __________.
A substance moving from outside the cell into the cytoplasm must pass through __________.
A substance moving from outside the cell into the cytoplasm must pass through __________.
Chromosomes are only visible as a cell is about to divide.
Chromosomes are only visible as a cell is about to divide.
Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they have no membrane-bounded organelles in their cytoplasm.
Bacterial cells are prokaryotic. Unlike a typical eukaryotic cell they have no membrane-bounded organelles in their cytoplasm.
The endosymbiont theory explains the origins of __________.
The endosymbiont theory explains the origins of __________.
Cell motility, which includes changes both in cell location and in the movement of cell parts, requires interactions of the cytoskeleton __________.
Cell motility, which includes changes both in cell location and in the movement of cell parts, requires interactions of the cytoskeleton __________.
Observing a fluorescent micrograph cell with intermediate filaments would help you identify the cell as a __________.
Observing a fluorescent micrograph cell with intermediate filaments would help you identify the cell as a __________.
Animal cells have unique organelles called __________ that are composed of structures called __________.
Animal cells have unique organelles called __________ that are composed of structures called __________.
In terms of cellular function, what is the most important difference between prokaryotic and eukaryotic cells?
In terms of cellular function, what is the most important difference between prokaryotic and eukaryotic cells?
Microfilaments function in cell motility including __________.
Microfilaments function in cell motility including __________.
The organelle that is a plant cell's compartment for the storage of inorganic ions such as potassium and chloride is the __________.
The organelle that is a plant cell's compartment for the storage of inorganic ions such as potassium and chloride is the __________.
What is the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?
What is the functional connection between the nucleolus, nuclear pores, and the nuclear membrane?
Basal bodies are most closely associated with which of the following cell components?
Basal bodies are most closely associated with which of the following cell components?
Match the types of cell junctions in plant and animal cells:
Match the types of cell junctions in plant and animal cells:
Components of the cytoskeleton often mediate the movement of organelles within the cytoplasm.
Components of the cytoskeleton often mediate the movement of organelles within the cytoplasm.
Cilia and flagella move due to the interaction of the cytoskeleton with which of the following?
Cilia and flagella move due to the interaction of the cytoskeleton with which of the following?
You would expect a cell with an extensive Golgi apparatus to __________.
You would expect a cell with an extensive Golgi apparatus to __________.
Dye injected into a plant cell might be able to enter an adjacent cell through __________.
Dye injected into a plant cell might be able to enter an adjacent cell through __________.
The extracellular matrix of the animal cell has all of the following molecular components except a middle lamella.
The extracellular matrix of the animal cell has all of the following molecular components except a middle lamella.
Which of the following groups is primarily involved in synthesizing molecules needed by the cell?
Which of the following groups is primarily involved in synthesizing molecules needed by the cell?
The network of fibers that organizes structures and activities in a cell __________.
The network of fibers that organizes structures and activities in a cell __________.
The function of the rough endoplasmic reticulum (RER) is __________.
The function of the rough endoplasmic reticulum (RER) is __________.
Cells are small because __________.
Cells are small because __________.
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.
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.
__________ are membrane-bound metabolic compartments that specialize in the production of hydrogen peroxide (H2O2) and its conversion to water.
__________ are membrane-bound metabolic compartments that specialize in the production of hydrogen peroxide (H2O2) and its conversion to water.
Questions and Answers
Something went wrong
Flashcards
Flashcards are hidden until you start studying
Flashcards
Something went wrong
Study Notes
Study Notes
Cellular Structures and Their Functions
- Smooth Endoplasmic Reticulum (ER): Involved in lipid synthesis, calcium ion storage, and detoxification of poisons.
- Rough Endoplasmic Reticulum (ER): Responsible for synthesizing proteins destined for secretion.
- Golgi Apparatus: Modifies, sorts, and packages proteins; involved in cisternal maturation where molecules are altered as they move through.
- Lysosomes: Digest macromolecules and facilitate autophagy, the process of recycling cellular components.
Endomembrane System
- The endomembrane system includes the nuclear envelope, ER, Golgi apparatus, lysosomes, and vesicles.
- Proteins synthesized in the rough ER are processed in the Golgi apparatus before being transported in vesicles.
Ribosomes
- Bound ribosomes synthesize proteins such as insulin and lysosomal enzymes.
- Ribosomal subunits are manufactured in the nucleolus and play a key role in protein synthesis.
Prokaryotic vs. Eukaryotic Cells
- Eukaryotic cells are approximately ten times larger than prokaryotic cells, leading to a volume ratio of about 1000:1.
- Prokaryotic cells lack membrane-bound organelles and have a region called the nucleoid containing genetic material.
Cell Membrane and Transport
- The plasma membrane is a selective barrier regulating material passage in and out of the cell.
- Tight junctions between intestinal cells prevent fluid leakage.
Cytoskeleton Functions
- Composed of microtubules, microfilaments, and intermediate filaments, the cytoskeleton provides structural support and facilitates cell movement.
- Myosin motor proteins interact with microfilaments during muscle contraction, while microtubules assist in organelle movement and cilia/flagella movement.
Plant and Animal Cell Differences
- Plant cells possess a central vacuole for storing ions, while animal cells do not have a large central vacuole.
- Both types of cells use mitochondria for cellular respiration; chloroplasts are exclusive to plant cells.
Golgi Apparatus and Protein Secretion
- An extensive Golgi apparatus indicates a high capacity for protein secretion.
- Golgi apparatus processes incoming ER products with modifications during their transit from cis to trans regions.
Endosymbiont Theory
- Explains the origins of mitochondria and chloroplasts, suggesting they evolved from engulfed prokaryotic cells.
Cell Junctions
- In plant cells, plasmodesmata serve as channels allowing transport between neighboring cells; in animal cells, gap junctions fulfill a similar communication function.
Cytoplasmic Components
- Peroxisomes produce hydrogen peroxide as a metabolic by-product.
- The cytoskeleton is a dynamic network that can be quickly reconfigured to support cell function and shape.
General Cellular Mechanics
- Cells are small due to geometric relationships, balancing surface area and volume for efficient material exchange.
- Intermediate filaments provide structural integrity and assist in anchoring organelles within cells.
Cellular Structures and Their Interrelationships
- The smooth ER and rough ER work together in synthesis and processing of lipids and proteins, respectively.
- The ribosomal protein subunits and lysosomal proteins are synthesized in the rough ER and modified in the Golgi apparatus.
- Mitochondria and chloroplasts share characteristics with prokaryotes, supporting the endosymbiont theory through their own DNA and ribosomes.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Study Notes
Something went wrong
