Chapter 4
Shwachman-Diamond Syndrome affects the SBDS gene, whose product is involved in processing the cell's genetic instructions to create proteins. As a result of this information, the product of the SBDS gene is likely a part of which cell structure?
ribosomes -The ribosome is the site of protein synthesis.
Match the organelle with its function: Vacuole
Carries out a variety of functions including regulating water levels in plant cells.
Match the organelle with its function: Nucleus
Contains instructions for protein synthesis and cell reproduction; contains genetic information.
Match the organelle with its function: Lysosomes
Digest worn-out organelles and cell debris; digest material taken up by endocytosis.
The cell theory includes different tenets to explain the organization of life. What principles comprise the cell theory?
-All organisms are composed of one or more cells, and the life processes of metabolism and heredity occur within these cells. -Cells are the smallest living things, the basic units of organization of all organisms. -Cells arise only by division of a previously existing cell.
All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, but despite these modifications, all cells resemble one another in certain fundamental ways. Match each description with a feature. NUCLEUS
-contains eukaryotic DNA
All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, but despite these modifications, all cells resemble one another in certain fundamental ways. Match each description with a feature. NUCLEOID
-contains prokaryotic DNA
Match each cellular component with the correct cell type: prokaryote, eukaryote, or both. Both pro and euk
-has a cell membrane -contains ribosomes -has a cytoplasm
Match each cellular component with the correct cell type: prokaryote, eukaryote, or both. Prokaryote
-has a nucleiod
Match each cellular component with the correct cell type: prokaryote, eukaryote, or both. Eukaryote
-has a nucleus -has organelles
-As a cell increases in size the surface area increases________than the volume. -The surface area of a cell increases proportionally to the radius ___________. -The volume of a cell increases proportionally to the radius_________. -Understanding the surface area to volume relationship, a basketball has a _________ surface area to volume ratio compared to a tennis ball.
-less -squared -cubed -smaller
Based on cell size, which cells can be seen with the light microscope?.
-paramecium -bacterium -large virus -red blood cell Incorrect -eukaryotic nucleus
All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, but despite these modifications, all cells resemble one another in certain fundamental ways. Match each description with a feature. CYTOPLASM
-semifluid matrix -contains sugars, salts, and amino acids
All cells exhibit basic structural similarities. The general plan of cellular organization varies between different organisms, but despite these modifications, all cells resemble one another in certain fundamental ways. Match each description with a feature. PLASMA MEMBRANE
-separates contents of cell from surroundings -made up of phospholipids bilayer
Indicate if the following statements about prokaryotes are true or false 1. They contain a plasma membrane 2. They contain internal organelles 3. They have a cell wall 4. They have ribosomes
1. true 2. false 3. true 4. true
Match the organelle with its function: Endoplasmic reticulum
Intracellular compartment forms transport vesicles; participates in lipid synthesis and synthesis of membrane or secreted proteins.
Match the organelle with its function: Peroxisome
Involved in the breakdown of fats and contains the enzyme catalase.
Match the organelle with its function: Golgi Apparatus
Packages proteins for export from cell; forms secretory vesicle.
How did mitochondria and chloroplasts most likely arise?
They arose from bacteria that were engulfed and not digested.
The lysosome contains ________ enzymes.
hydrolytic
Communicating Junction:
permits small molecules and ions to pass directly from one cell to another one
Tight Junction:
this junction connects membranes of adjacent cells, forming sheets of cells
Anchoring Junction:
this junctions attached the cytoskeleton of one cell to the cytoskeleton of one cell of an adjacent cell
