CellStructureSE-1_2016Gizmo
... 3. Fill in: Name the organelle or organelles that perform each of the following functions. A. _____________________ convert sunlight to chemical energy. B. The _____________________ and the _____________________ help to support the plant cell and help it to maintain its shape. ...
... 3. Fill in: Name the organelle or organelles that perform each of the following functions. A. _____________________ convert sunlight to chemical energy. B. The _____________________ and the _____________________ help to support the plant cell and help it to maintain its shape. ...
Cell Structure & Function
... that controls which substances can enter or leave the cell. • Double layer ...
... that controls which substances can enter or leave the cell. • Double layer ...
Cholera - KingsfieldBiology
... causing severe dehydration. Water tainted with V. Cholerae is ingested, usually through water contaminated with effluent Produce flagellin to produce flagellum to move through mucus of small intestine. ...
... causing severe dehydration. Water tainted with V. Cholerae is ingested, usually through water contaminated with effluent Produce flagellin to produce flagellum to move through mucus of small intestine. ...
Slide 1
... • Some plastids store starches or lipids, where as others contain pigment; pigments are molecules that give color • Chloroplasts contain the green pigment chlorophyll • Chlorophyll traps light energy and gives leaves and stems their green color ...
... • Some plastids store starches or lipids, where as others contain pigment; pigments are molecules that give color • Chloroplasts contain the green pigment chlorophyll • Chlorophyll traps light energy and gives leaves and stems their green color ...
Cell Membrane, vacuoles, vesicles and lysosomes
... Membrane-bound sac of hydrolytic enzymes that the cell uses to digest macromolecules Found in the cytoplasm of eukaryotic cells Lysosomal enzymes can hydrolyze proteins, polysaccharides, fats, and nucleic acids Carry out intracellular digestion by a process called phagocytosis Lysosomes also ...
... Membrane-bound sac of hydrolytic enzymes that the cell uses to digest macromolecules Found in the cytoplasm of eukaryotic cells Lysosomal enzymes can hydrolyze proteins, polysaccharides, fats, and nucleic acids Carry out intracellular digestion by a process called phagocytosis Lysosomes also ...
Structures external to the Cell Wall:
... The Bacterial Cell Wall: The cell envelope: The layers that surrounding bacterial cell are called the cell envelope. The Gram-positive cell envelope: It is composed from three layers: the cytoplasmic membrane, a thick peptidoglycan layer and a variable outer layer called capsule. The Gram-negative ...
... The Bacterial Cell Wall: The cell envelope: The layers that surrounding bacterial cell are called the cell envelope. The Gram-positive cell envelope: It is composed from three layers: the cytoplasmic membrane, a thick peptidoglycan layer and a variable outer layer called capsule. The Gram-negative ...
cells and organelles
... embedded proteins. Color and label the cell membrane tan. Plant cells have an additional layer surrounding them called the cell wall. The cell wall is made of nonliving material called cellulose. Color and label the cell wall brown. The centrosome (also called the "microtubule organizing center") is ...
... embedded proteins. Color and label the cell membrane tan. Plant cells have an additional layer surrounding them called the cell wall. The cell wall is made of nonliving material called cellulose. Color and label the cell wall brown. The centrosome (also called the "microtubule organizing center") is ...
“The Cell”
... C) Cytoskeleton – a network of protein filaments that help cell to maintain its shape; also involved in cell movement 1) Cytoskeleton is made up of: (a) Microtubules – hollow tubes of protein; they maintain cell shape and serve as “tracks” for organelles to move ...
... C) Cytoskeleton – a network of protein filaments that help cell to maintain its shape; also involved in cell movement 1) Cytoskeleton is made up of: (a) Microtubules – hollow tubes of protein; they maintain cell shape and serve as “tracks” for organelles to move ...
Cell Organelle Collage Project
... Remember, it takes 3 million cells to cover the head of a pin, but only one cell collage to cover a large part of your Biology grade. Assignment: You must write an original and appropriate analogy between cell organelles/structures and everyday objects. “An analogy is a comparison between two things ...
... Remember, it takes 3 million cells to cover the head of a pin, but only one cell collage to cover a large part of your Biology grade. Assignment: You must write an original and appropriate analogy between cell organelles/structures and everyday objects. “An analogy is a comparison between two things ...
CELL ORGANELLES
... membrane. The cell wall gives the plant cell it's box-like shape. it also protects the cell. The cell wall contains pores which allow materials to pass to and from the cell membrane. ...
... membrane. The cell wall gives the plant cell it's box-like shape. it also protects the cell. The cell wall contains pores which allow materials to pass to and from the cell membrane. ...
Cell parts flipbook
... TRANSPORT PROTEINS-move molecules across membranes FUNCTION: Membranes are SELECTIVELY PERMEABLE (=Semi-permeable) Allow certain molecules to pass through; but keep others out Controls what enters and leaves cell Helps with HOMEOSTASIS CYTOPLASM= gel-like material + organelles between nucleus and ...
... TRANSPORT PROTEINS-move molecules across membranes FUNCTION: Membranes are SELECTIVELY PERMEABLE (=Semi-permeable) Allow certain molecules to pass through; but keep others out Controls what enters and leaves cell Helps with HOMEOSTASIS CYTOPLASM= gel-like material + organelles between nucleus and ...
Name - SimplyBio
... 21.Some materials can move across the cell membrane against a concentration gradient by active transport 22.The levels of organization in a multicellular organism listed from simplest to most complicated are cells, tissues, organs and organ systems. ...
... 21.Some materials can move across the cell membrane against a concentration gradient by active transport 22.The levels of organization in a multicellular organism listed from simplest to most complicated are cells, tissues, organs and organ systems. ...
Passive transport Movement w/o input of energy. Active transport
... Binding sites for Na+ and ATP on its intracellular surface Binding sites for K+ on its extracellular surface ...
... Binding sites for Na+ and ATP on its intracellular surface Binding sites for K+ on its extracellular surface ...
BIOL 303: Cell Biology
... Course Materials Currently Used Materials Cell and Molecular Biology: Concepts and Experiments, Karp, 7th Edition ...
... Course Materials Currently Used Materials Cell and Molecular Biology: Concepts and Experiments, Karp, 7th Edition ...
Setting our Cytes Ahead!!
... tiny cell particles called ribosomes that are involved in building proteins. Ribosomes are organelles but do not have a membrane. ...
... tiny cell particles called ribosomes that are involved in building proteins. Ribosomes are organelles but do not have a membrane. ...
Summer Exam 2 Objectives
... i) Membrane Structure and Function (1) Explain how membranes help organize the chemical activities of a cell. (2) Relate the structure of phospholipid molecules to the structure and properties of cell membranes. (3) Describe the fluid mosaic structure of cell membranes. (4) Describe the diverse func ...
... i) Membrane Structure and Function (1) Explain how membranes help organize the chemical activities of a cell. (2) Relate the structure of phospholipid molecules to the structure and properties of cell membranes. (3) Describe the fluid mosaic structure of cell membranes. (4) Describe the diverse func ...
Cell Transport
... 1. Describe the structure of the cell membrane (fluid mosaic model). 2. Carry out an investigation into the chemical structure of the cell membrane. 3. State that the cell membrane is SELECTIVELY PERMEABLE, allowing some molecules to move across the membrane through TINY PORES but preventing others. ...
... 1. Describe the structure of the cell membrane (fluid mosaic model). 2. Carry out an investigation into the chemical structure of the cell membrane. 3. State that the cell membrane is SELECTIVELY PERMEABLE, allowing some molecules to move across the membrane through TINY PORES but preventing others. ...
Notes #1 Cell Structure
... 2. cytoplasm—the gel-like fluid inside a cell; made mostly of water; other organelles are embedded in the cytoplasm 3. nucleus—the control center of the cell; it contains DNA—genetic material of an organism 4. vacuole—storage center of the cell (wastes, food, water) plant cells usually have one or ...
... 2. cytoplasm—the gel-like fluid inside a cell; made mostly of water; other organelles are embedded in the cytoplasm 3. nucleus—the control center of the cell; it contains DNA—genetic material of an organism 4. vacuole—storage center of the cell (wastes, food, water) plant cells usually have one or ...
Why are cells small?
... happens to the cell’s surface area? B) As the cell gets larger (grows) what happens to the cell’s volume? C) Which one increases faster? D) Why is this a problem? ...
... happens to the cell’s surface area? B) As the cell gets larger (grows) what happens to the cell’s volume? C) Which one increases faster? D) Why is this a problem? ...
Cytoplasmic streaming
Cytoplasmic streaming, also called protoplasmic streaming and cyclosis, is the directed flow of cytosol (the liquid component of the cytoplasm) and organelles around large fungal and plant cells through the mediation of actin. This movement aids in the delivery of organelles, nutrients, metabolites, genetic information, and other materials to all parts of the cell. Cytoplasmic streaming occurs along actin filaments in the cytoskeleton of the cell.Cytoplasmic streaming was first discovered in the 1830s. The scientific breakthrough assisted scientists in developing an understanding of the different roles of cells and how they function as the basic operating systems of life.This process occurs through the operation of motor proteins called myosins.These proteins use energy of adenosine triphosphate (ATP) to act as a molecular motor, which slides along actin filaments. This works in a manner that tows the organelles and other cytoplasmic contents in the same direction. Myosin proteins consist of two conjoined proteins. If one protein remains attached to the substrate, the substance acted upon by the protein, such as a microfilament, has the ability to move organelles through the cytoplasm.The green alga genus Chara and other genera in the Division Charophyta, such as Coleochaete, are thought to be the closest relatives of land plants. These haploid organisms contain some of the largest plant cells on earth, a single cell of which can reach up to 10 cm in length. The large size of these cells demands an efficient means to distribute resources, which is enabled via cytoplasmic streaming.Cytoplasmic streaming is strongly dependent upon intracellular pH and temperature. It has been observed that the effect of temperature on cytoplasmic streaming created linear variance and dependence at different high temperatures in comparison to low temperatures. This process is complicated, with temperature alterations in the system increasing its efficiency, with other factors such as the transport of ions across the membrane being simultaneously affected. This is due to cells homeostasis depending upon active transport which may be affected at some critical temperatures.In plant cells, chloroplasts may be moved around with the stream, possibly to a position of optimum light absorption for photosynthesis. The rate of motion is usually affected by light exposure, temperature, and pH levels.In reference to pH, because actin and myosin are both proteins, strong dependence on pH is expected. The optimal pH at which cytoplasmic streaming is highest, is achieved at neutral pH and decreases at both low and high pH.The flow of cytoplasm may be stopped by:Adding Lugol's iodine solutionAdding Cytochalasin D (dissolved in dimethyl sulfoxide)↑ ↑ ↑ ↑ ↑ ↑