Unit B: Cell structure
... • Nuclear membrane/envelope bilayer, separates and contains nuclear contents (DNA). • Nuclear pores: allow mRNA out of nucleus, nucleotides, nutrients & enzymes in. They are made from protein. • Chromatin: Protein & DNA; form chromosomes when cell divides. • Nucleolus:contains rRNA and Ribosomal pro ...
... • Nuclear membrane/envelope bilayer, separates and contains nuclear contents (DNA). • Nuclear pores: allow mRNA out of nucleus, nucleotides, nutrients & enzymes in. They are made from protein. • Chromatin: Protein & DNA; form chromosomes when cell divides. • Nucleolus:contains rRNA and Ribosomal pro ...
Eukaryotic Cell Organelles
... Rough ER – covered in ribosomes; packages proteins made by the ribosomes into vesicles (small sacs containing materials) that are transported to the golgi complex Smooth ER – no ribosomes; make lipids and break down toxic substances ...
... Rough ER – covered in ribosomes; packages proteins made by the ribosomes into vesicles (small sacs containing materials) that are transported to the golgi complex Smooth ER – no ribosomes; make lipids and break down toxic substances ...
Passive Transport in the Cell
... This is the movement of molecules such as Oxygen, Sugar, and Carbon Dioxide from one region to another. Because these are relatively small molecules, they can pass through the cell membrane until they are equal on the inside and the outside. This is referred to as dynamic ...
... This is the movement of molecules such as Oxygen, Sugar, and Carbon Dioxide from one region to another. Because these are relatively small molecules, they can pass through the cell membrane until they are equal on the inside and the outside. This is referred to as dynamic ...
END OF CHAPTER QUESTIONS
... Both facilitated diffusion and receptor-mediated endocytosis require a transport protein within the plasma membrane. ...
... Both facilitated diffusion and receptor-mediated endocytosis require a transport protein within the plasma membrane. ...
Fall 2009 Lecture 1 - Department of Chemistry -
... * Rough ER = site of protein synthesis via ribosomes - Ribosomes are made up of RNA and proteins not bound by a membrane 5. Lysosomes - Internal sacs bound by a single membrane - Responsible for degrading cell components that have become obsolete for the cell or organism. - Internal pH ~5 (very acid ...
... * Rough ER = site of protein synthesis via ribosomes - Ribosomes are made up of RNA and proteins not bound by a membrane 5. Lysosomes - Internal sacs bound by a single membrane - Responsible for degrading cell components that have become obsolete for the cell or organism. - Internal pH ~5 (very acid ...
Cells – the Basic Unit of Life
... Blue – Homeostasis: any structure that helps to maintain a cell’s environment or internal balance Red – Reproduction; any structure associated with reproducing the cell Orange – Structure; any structure associated with building for the cell ...
... Blue – Homeostasis: any structure that helps to maintain a cell’s environment or internal balance Red – Reproduction; any structure associated with reproducing the cell Orange – Structure; any structure associated with building for the cell ...
Review Game Questions
... 11. What is the difference between plasmolysis and Turgor pressure? 12. When some substances can pass across them but others cannot, biological membranes are said to be ______________________________________ 13. The process by which a protein channel allows molecules to cross the cell membrane is ca ...
... 11. What is the difference between plasmolysis and Turgor pressure? 12. When some substances can pass across them but others cannot, biological membranes are said to be ______________________________________ 13. The process by which a protein channel allows molecules to cross the cell membrane is ca ...
Chapter 5 Cell Membrane
... Proteins embedded in membrane • 1. Channel Proteins - form small openings for molecules to difuse through 2. Carrier Proteins- binding site on protein surface "grabs" certain molecules and pulls them into the cell 3. Receptor Proteins - molecular triggers that set off cell responses (such as relea ...
... Proteins embedded in membrane • 1. Channel Proteins - form small openings for molecules to difuse through 2. Carrier Proteins- binding site on protein surface "grabs" certain molecules and pulls them into the cell 3. Receptor Proteins - molecular triggers that set off cell responses (such as relea ...
Section 3.2 – Moving Cellular Materials Selectively Permeable
... Section 3.2 – Moving Cellular Materials ...
... Section 3.2 – Moving Cellular Materials ...
Controls what enters and leaves the cell
... Contain powerful hydrolytic enzymes to break down food, waste, or dead organelles within the cell. ...
... Contain powerful hydrolytic enzymes to break down food, waste, or dead organelles within the cell. ...
Cell Processes Unit Review Newsletter Questions
... Read the newsletter provided and use it to answer the following questions. 1. Most animal cells are ________________________, meaning they have a ________________. 2. Fill in the chart below about the different organelles in a cell: Name 1. Nucleus 3. Nucleolus 5. Ribosomes 7. Endoplasmic ...
... Read the newsletter provided and use it to answer the following questions. 1. Most animal cells are ________________________, meaning they have a ________________. 2. Fill in the chart below about the different organelles in a cell: Name 1. Nucleus 3. Nucleolus 5. Ribosomes 7. Endoplasmic ...
Microbodies
... functions to help the body break down large molecules and detoxify hazardous substances It contains oxidative enzymes and catalysts. ...
... functions to help the body break down large molecules and detoxify hazardous substances It contains oxidative enzymes and catalysts. ...
Cell Organelle Chart
... instruction manual for the cells’ activities. Without the nucleus the cell will be unable to create new cells and will eventually die. ...
... instruction manual for the cells’ activities. Without the nucleus the cell will be unable to create new cells and will eventually die. ...
cell membrane
... Transport – carry molecules within cell Secretory – carry molecules outside cell ...
... Transport – carry molecules within cell Secretory – carry molecules outside cell ...
Chapter 4 (Part A) : Eukaryotic Cells
... Mycobacterium tuberculosis prevents fusion of lysosome with vesicle in cell containing the bacteria; the bacteria then ride along with the immune system cell (macrophage) ...
... Mycobacterium tuberculosis prevents fusion of lysosome with vesicle in cell containing the bacteria; the bacteria then ride along with the immune system cell (macrophage) ...
Cell Structure and Function Study Guide
... Be prepared to know the location and key words to define the cell parts. Use your worksheet from class to study the parts. You must be able to identify the following organelles by shape so you can label each part. You must also know the function of each cell part. Cell wall Mitochondria Chloroplast ...
... Be prepared to know the location and key words to define the cell parts. Use your worksheet from class to study the parts. You must be able to identify the following organelles by shape so you can label each part. You must also know the function of each cell part. Cell wall Mitochondria Chloroplast ...
Chapter 13, Lesson 1
... a. Chromosomes, within the nucleus, controls cell functions and traits. “blueprint” b. nuclear membrane, surrounds nucleus, controls movement of materials into and out of nucleus. Semi-permeable. 4. Mitochondria, organelle where energy is released from breaking down food; “powerhouse” Muscle cells h ...
... a. Chromosomes, within the nucleus, controls cell functions and traits. “blueprint” b. nuclear membrane, surrounds nucleus, controls movement of materials into and out of nucleus. Semi-permeable. 4. Mitochondria, organelle where energy is released from breaking down food; “powerhouse” Muscle cells h ...
Cells
... Does not dissolve in watery environment of the body. The membrane is nonpolar but the environment of the body is polar. The chemical composition is not the same so it’s like mixing oil and water. Consists of a lipid bilayer made up of polar heads and nonpolar tails. This lipid bilayer is chemically ...
... Does not dissolve in watery environment of the body. The membrane is nonpolar but the environment of the body is polar. The chemical composition is not the same so it’s like mixing oil and water. Consists of a lipid bilayer made up of polar heads and nonpolar tails. This lipid bilayer is chemically ...
Finding your way around the animal cell
... communicate with its neighbours and detect and respond to changes in the environment. It also acts as a physical barrier, controlling what can enter and exit the cell. 2. Extracellular matrix: the material in between cells that holds tissues together, usually made of scaffolding proteins such as col ...
... communicate with its neighbours and detect and respond to changes in the environment. It also acts as a physical barrier, controlling what can enter and exit the cell. 2. Extracellular matrix: the material in between cells that holds tissues together, usually made of scaffolding proteins such as col ...
Cytosol
The cytosol or intracellular fluid (ICF) or cytoplasmic matrix is the liquid found inside cells. It is separated into compartments by membranes. For example, the mitochondrial matrix separates the mitochondrion into many compartments.In the eukaryotic cell, the cytosol is within the cell membrane and is part of the cytoplasm, which also comprises the mitochondria, plastids, and other organelles (but not their internal fluids and structures); the cell nucleus is separate. In prokaryotes, most of the chemical reactions of metabolism take place in the cytosol, while a few take place in membranes or in the periplasmic space. In eukaryotes, while many metabolic pathways still occur in the cytosol, others are contained within organelles.The cytosol is a complex mixture of substances dissolved in water. Although water forms the large majority of the cytosol, its structure and properties within cells is not well understood. The concentrations of ions such as sodium and potassium are different in the cytosol than in the extracellular fluid; these differences in ion levels are important in processes such as osmoregulation, cell signaling, and the generation of action potentials in excitable cells such as endocrine, nerve and muscle cells. The cytosol also contains large amounts of macromolecules, which can alter how molecules behave, through macromolecular crowding.Although it was once thought to be a simple solution of molecules, the cytosol has multiple levels of organization. These include concentration gradients of small molecules such as calcium, large complexes of enzymes that act together to carry out metabolic pathways, and protein complexes such as proteasomes and carboxysomes that enclose and separate parts of the cytosol.