Systems Microbiology 1
... a. Describe the different sorts of evidence for life’s appearance on the early Earth ~ 3.5 bya. The evidence for this phenomenon is isotopic record, rocks and microfossils, organic geochemical records, and molecular evolution.Microfossils exist that look as though they could be from cyanobacteria. S ...
... a. Describe the different sorts of evidence for life’s appearance on the early Earth ~ 3.5 bya. The evidence for this phenomenon is isotopic record, rocks and microfossils, organic geochemical records, and molecular evolution.Microfossils exist that look as though they could be from cyanobacteria. S ...
S10 Key BLM 8-6 7 - Cochrane High School
... concentration gradient. Carrier proteins recognize specific molecules because of their size and shape. The molecule to be carried fits into a groove in the protein, much like a lock and key. B. Diffusion (O2) and osmosis (H2O): Diffusion is the movement of particles from an area of high concentratio ...
... concentration gradient. Carrier proteins recognize specific molecules because of their size and shape. The molecule to be carried fits into a groove in the protein, much like a lock and key. B. Diffusion (O2) and osmosis (H2O): Diffusion is the movement of particles from an area of high concentratio ...
Chapter 6
... Cell respiration – breaks down glucose to produce ATP for cell activities Double membrane with inner one folded to increase the surface area (ISA) Cristae – inner folded membrane, contains enzymes for respiration Contains some DNA ...
... Cell respiration – breaks down glucose to produce ATP for cell activities Double membrane with inner one folded to increase the surface area (ISA) Cristae – inner folded membrane, contains enzymes for respiration Contains some DNA ...
2.1 Cells and simple cell transport
... The diagram shows four ways in which molecules may move into and out of a cell. The dots show the concentration of molecules. ...
... The diagram shows four ways in which molecules may move into and out of a cell. The dots show the concentration of molecules. ...
Cell Basics
... and many membrane-bound organelles with specialized functions. • Animal or plant cells. (also includes fungi and protists) ...
... and many membrane-bound organelles with specialized functions. • Animal or plant cells. (also includes fungi and protists) ...
NOTES CH. 7 The Cell
... Light microscopes – uses light (1000x actual size) Electron microscopes – uses a beam of electrons instead of light (500,000x actual size). Specimens must be in a vacuum. 1. Scanning Electron Microscope (SEM) – 3-D shape 2. Transmission Electron Microscope (TEM) – study structures within a cell. ...
... Light microscopes – uses light (1000x actual size) Electron microscopes – uses a beam of electrons instead of light (500,000x actual size). Specimens must be in a vacuum. 1. Scanning Electron Microscope (SEM) – 3-D shape 2. Transmission Electron Microscope (TEM) – study structures within a cell. ...
Cell Notes PPT - Winston Knoll Collegiate
... • is the division of cells that produces daughter cells that have the same number of chromosomes as the parent cell. Hence, it occurs when your body is growing and you need to replace those worn out cells ...
... • is the division of cells that produces daughter cells that have the same number of chromosomes as the parent cell. Hence, it occurs when your body is growing and you need to replace those worn out cells ...
Plant Cells
... molecules. Proteins carry out most of the work of cells to perform the essential functions of life. One of the major functions of the cell is the production of proteins. The genetic information in DNA provides instructions for assembling protein molecules. In eukaryotic cells the nucleus, ribosomes, ...
... molecules. Proteins carry out most of the work of cells to perform the essential functions of life. One of the major functions of the cell is the production of proteins. The genetic information in DNA provides instructions for assembling protein molecules. In eukaryotic cells the nucleus, ribosomes, ...
3 - cloudfront.net
... 11. A solution that is hypotonic to a cell has a. more solutes than the cell. b. fewer solutes than the cell. c. the same concentration of solutes as ...
... 11. A solution that is hypotonic to a cell has a. more solutes than the cell. b. fewer solutes than the cell. c. the same concentration of solutes as ...
WOODLAND HILLS HIGH SCHOOL LESSON PLAN
... Describe the fundamental roles of plastids (e.g., chloroplasts) and mitochondria in energy transformations Describe how the structure of the plasma membrane allows it to function as a regulatory structure and/or protective barrier for a cell. ...
... Describe the fundamental roles of plastids (e.g., chloroplasts) and mitochondria in energy transformations Describe how the structure of the plasma membrane allows it to function as a regulatory structure and/or protective barrier for a cell. ...
worksheet prokaryotic and eukaryotic cell structure
... Lack membrane-bound organelles_____________________________________________ Possess subcellular organelles________________________________________________ Evolve from much smaller prokaryotic cells___________________________________ Contain DNR________________________________________________________ ...
... Lack membrane-bound organelles_____________________________________________ Possess subcellular organelles________________________________________________ Evolve from much smaller prokaryotic cells___________________________________ Contain DNR________________________________________________________ ...
CELL ORGANELLES
... • Controls cell activities • Keeps DNA out of the cytoplasm, but allows RNA to move through the nuclear pores and ribosomes • Cell reproduction starts here ...
... • Controls cell activities • Keeps DNA out of the cytoplasm, but allows RNA to move through the nuclear pores and ribosomes • Cell reproduction starts here ...
chapter 7 a tour of the cell
... According to a widely accepted model, filaments near the cell’s trailing edge interact with myosin, causing contraction. The contraction forces the interior fluid into the pseudopodium, where the actin network has been weakened. The pseudopodium extends until the actin reassembles into a netwo ...
... According to a widely accepted model, filaments near the cell’s trailing edge interact with myosin, causing contraction. The contraction forces the interior fluid into the pseudopodium, where the actin network has been weakened. The pseudopodium extends until the actin reassembles into a netwo ...
Honors Biology - LangdonBiology.org
... Pure water is hypotonic to your cells. Since water osmoses from hypotonic to hypertonic solutions, water would flow into your cells, eventual causing them to lyse. 4. Describe what would happen if you put a fish evolved to live in fresh water into the ocean. The ocean water is hypertonic relative to ...
... Pure water is hypotonic to your cells. Since water osmoses from hypotonic to hypertonic solutions, water would flow into your cells, eventual causing them to lyse. 4. Describe what would happen if you put a fish evolved to live in fresh water into the ocean. The ocean water is hypertonic relative to ...
File
... 6. Nucleus – the “brain” of the cell; stores the cell’s most important chemical information 7. Vacuoles – membrane bound sacs filled with fluids; store water, food and waste 8. Chloroplasts – found only in plants and some Protists; contain pigments that absorb sunlight 9. Mitochondria – the cell “po ...
... 6. Nucleus – the “brain” of the cell; stores the cell’s most important chemical information 7. Vacuoles – membrane bound sacs filled with fluids; store water, food and waste 8. Chloroplasts – found only in plants and some Protists; contain pigments that absorb sunlight 9. Mitochondria – the cell “po ...
Attachment 2
... support (plants only) Cell Regulates what membrane enters and leaves the cell. Gives the cell protection and support. Cytoplasm Jello-like fluid that fills the inside of the cell ...
... support (plants only) Cell Regulates what membrane enters and leaves the cell. Gives the cell protection and support. Cytoplasm Jello-like fluid that fills the inside of the cell ...
A Tour of the Cell
... Synthesizes lipids, phospholipids and steroids in specific cells In the liver, SER assists with the breakdown of harmful substances and the regulation of ...
... Synthesizes lipids, phospholipids and steroids in specific cells In the liver, SER assists with the breakdown of harmful substances and the regulation of ...
HOMEWORK: REVIEW CELL LIFE CYCLE AND MITOSIS
... 1) Write an M next to the things that happen during mitosis. Write a C next to the things that happen during cytokinesis. ...
... 1) Write an M next to the things that happen during mitosis. Write a C next to the things that happen during cytokinesis. ...
2. a) Protein channels help to move material across the cell
... lipids and membrane proteins that move laterally or sideways throughout the membrane. That means the membrane is not solid, but more like a 'fluid'. The membrane is depicted as mosaic because like a mosaic that is made up of many different parts the plasma membrane is composed of different kind ...
... lipids and membrane proteins that move laterally or sideways throughout the membrane. That means the membrane is not solid, but more like a 'fluid'. The membrane is depicted as mosaic because like a mosaic that is made up of many different parts the plasma membrane is composed of different kind ...
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)↑ ↑ ↑ ↑ ↑ ↑