• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Single-celled Primary Producers Diversity of Primary Producers
Single-celled Primary Producers Diversity of Primary Producers

... • Prokaryotes and Protista are single-celled • Range of sizes - some are so small they are difficult to collect in numbers – Picoplankton - <2 µm (10-6) – Ultraplankton - 2-5 µm – Nanoplankton - 5 -20 µm – Microplankton - 20-200 µm • Most important are nanoplankton or smaller Prokaryotes • Single ce ...
auditory / vestibular
auditory / vestibular

... AUDITORY / VESTIBULAR INTRO Similarities between auditory and vestibular systems (why consider together) Share: Labyrinth in temporal bone Eighth nerve Hair cells Differences Auditory Massive cortical representation Focuses on external world Pattern recognition ("what is it") Spatial info ("where is ...
an eGOcentric view of tOrC1 signaling
an eGOcentric view of tOrC1 signaling

... with and positively regulates mTORC1 in its GTP-bound state.3 Interestingly, TSC2, but not Rheb, appears to be dispensable for coupling amino acid signals to mTORC1, suggesting the existence of additional proteins that participate in amino acid regulation of mTORC1.4,5 In this context, two complemen ...
Single-celled Primary Producers
Single-celled Primary Producers

... • Prokaryotes and Protista are single-celled • Range of sizes - some are so small they are difficult to collect in numbers – Picoplankton - <2 µm (10-6) – Ultraplankton - 2-5 µm – Nanoplankton - 5 -20 µm – Microplankton - 20-200 µm • Most important are nanoplankton or smaller Prokaryotes • Single ce ...
Tissue Culture
Tissue Culture

... known as a cell line) but may cause a loss of specialized  y p cells and differentiated properties (de‐differentiation). ...
Checklists B2
Checklists B2

... a) Protein molecules are made up of long chains of amino acids. These long chains are folded to produce a specific shape that enables other molecules to fit into the protein. Proteins act as:  Structural components of tissues such as muscles.  Hormones.  Antibodies.  Catalysts. b) Catalysts incr ...
Exam 3 Review Sheet 11/8/10
Exam 3 Review Sheet 11/8/10

... 3. Explain what happens to the polymers we are constantly eating. Where did most the monomers that make up these polymers ultimately come from? (This will require some logical thinking) 4. How would you define a lipid. 5. How are lipids chemically different from the other three classes of macromolec ...
Sympathetic neurons in culture
Sympathetic neurons in culture

... days, and transfected with endotoxin-free plasmid DNA encoding green fluorescent protein (pEGFP-C1, Clontech). The DNa was diluted at 200 ng/µl concentration in basal medium (DMEM alone). Cells were removed from the incubator and the culture medium was exchanged to DMEM containing 100 ng/ml NGF only ...
Chapter 3 The Basic Structure of a Cell
Chapter 3 The Basic Structure of a Cell

... Number of Cells Although ALL living things are made of cells, organisms may be: • Unicellular – composed of one cell • Multicellular- composed of many cells that may organize into tissues, etc. ...
Vesicular transport of newly synthesized opsin from the Golgi
Vesicular transport of newly synthesized opsin from the Golgi

... for protein synthesis. Synthesis of disk membrane proteins occurs in the inner segment. Since rhodopsin is a typical intrinsic membrane protein within ROS disks, we wished to determine which cell constituents might participate in its transport across the inner segment. Prior autoradiographic and rad ...
File - The Official Website of Eliel Arrey
File - The Official Website of Eliel Arrey

... 31) Which structure is found in both prokaryotes and eukaryotic cells? A) Mitochondrion B) Ribosome C) Nuclear membrane D) ER E) B & C 32) When two atoms are equally electronegative, they will interact to form A) ionic bonds B) polar covalent bonds C) ions D) polar covalent bonds with no ionization ...
Global effects of plant growth
Global effects of plant growth

... movement of fluid driven by pressure  flow in xylem tracheids & vessels  negative pressure  transpiration creates negative pressure pulling xylem sap upwards from roots ...
Poster
Poster

... peptide substrate for the active site in these enzymes. While not the main enzyme used to produce bacterial cell walls, R61 DD-peptidase, a cytoplasmic enzyme, is easily crystallized to show bacterial enzyme chemistry. The active site of R61 consists of amino acid residues Ser62, Lys65, Tyr159, Arg2 ...
Photosynthesis
Photosynthesis

... light being received where it can be used to maximise the rate of photosynthesis. NOT CLOSER TO THE SUN! – just more light intensity. The slight separation of the cells provides maximum absorption of carbon dioxide. Beneath the palisade layer is the spongy mesophyll (4). The cells of the spongy laye ...
thyroid gland
thyroid gland

... Stimulation by TSH causes the follicular cells to pinocytose portions of the colloid, forming vesicles containing iodinated thyroglobulin. These vesicles fuse with lysosomes carrying enzymes that split the thyroglobulin. The T4 and T3 released in this way diffuse out of the secondary lysosomes, pass ...
Chapter 6 ppt
Chapter 6 ppt

... Central vacuole Tonoplast Golgi apparatus ...
Lecture 11: Cell Potentials
Lecture 11: Cell Potentials

... •  If in constructing an electrochemical cell, you need to write the reaction as a oxidation instead of a reduction, the sign of the 1/2 cell potential changes. Zn+2 + 2eZn ...
Lab 02- Cell Diversity
Lab 02- Cell Diversity

... organisms. All organisms are composed of cells, whether they exist as single cells, colonies of cells, or in multicellular form. Cells are usually very small, and for this reason, a thorough understanding of subcellular structure and function has been possible only through advances in electron micro ...
Cell Signaling and Cancer
Cell Signaling and Cancer

... conjunction with Fos and serves to “turn on” the expression of specific genes needed in the cell response to the chemical signal received by the cell. Kinase - An enzyme that phosphorylates its substrate. The source of the phosphate is ATP Ras – A key protein found in signaling pathways. Ras is foun ...
Primary 6 Science Term One The Cell
Primary 6 Science Term One The Cell

... Cells, tissues, organs, organ systems and organism Some plants and animals are just a single cell (unicellular organisms) which performs all life function. But most of us are multicellular organisms made up of lots of cells all working together. Some of these cells are all of the same type, collect ...
Carbohydrates as drug targets - e
Carbohydrates as drug targets - e

... Oligonucleotide-protein interactions are common in the biological world, and it has been shown that it is possible to obtain oligonucleotides that bind to specific protein targets with a high degree of selectivity. Such oligonucleotides are called aptamers (derived from the Latin aptus, to fit, and ...
Lecture 6 Notes CH.6
Lecture 6 Notes CH.6

... Various Golgi enzymes modify the carbohydrate portions of glycoproteins. o Carbohydrates are first added to proteins in rough ER, often during the process of polypeptide synthesis. o ...
How cells communicate with each other
How cells communicate with each other

... Cell signaling – or how do cell mantain homeostasis Homeostasis is the ability for the body to regulate its inner environment to ensure stability no matter what is happening in the outside environment ...
Bacteria - Home - Mr. Wright's Class Website
Bacteria - Home - Mr. Wright's Class Website

... Bacterial cells can take up DNA from the environment (Transformation) ...
Living Cells Notes
Living Cells Notes

... Controls movement of materials into and out of the cell. Provides support to the plant cell, and helps the plant maintain rigidity. Site of water and solute storage, and maintains water balance through osmosis. ...
< 1 ... 332 333 334 335 336 337 338 339 340 ... 1009 >

Endomembrane system

The endomembrane system is composed of the different membranes that are suspended in the cytoplasm within a eukaryotic cell. These membranes divide the cell into functional and structural compartments, or organelles. In eukaryotes the organelles of the endomembrane system include: the nuclear membrane, the endoplasmic reticulum, the Golgi apparatus, lysosomes, vesicles, endosomes and the cell membrane. The system is defined more accurately as the set of membranes that form a single functional and developmental unit, either being connected directly, or exchanging material through vesicle transport. Importantly, the endomembrane system does not include the membranes of mitochondria or chloroplasts.The nuclear membrane contains two lipid bilayers that encompass the contents of the nucleus. The endoplasmic reticulum (ER) is a synthesis and transport organelle that branches into the cytoplasm in plant and animal cells. The Golgi apparatus is a series of multiple compartments where molecules are packaged for delivery to other cell components or for secretion from the cell. Vacuoles, which are found in both plant and animal cells (though much bigger in plant cells), are responsible for maintaining the shape and structure of the cell as well as storing waste products. A vesicle is a relatively small, membrane-enclosed sac that stores or transports substances. The cell membrane, is a protective barrier that regulates what enters and leaves the cell. There is also an organelle known as the Spitzenkörper that is only found in fungi, and is connected with hyphal tip growth.In prokaryotes endomembranes are rare, although in many photosynthetic bacteria the plasma membrane is highly folded and most of the cell cytoplasm is filled with layers of light-gathering membrane. These light-gathering membranes may even form enclosed structures called chlorosomes in green sulfur bacteria.The organelles of the endomembrane system are related through direct contact or by the transfer of membrane segments as vesicles. Despite these relationships, the various membranes are not identical in structure and function. The thickness, molecular composition, and metabolic behavior of a membrane are not fixed, they may be modified several times during the membrane's life. One unifying characteristic the membranes share is a lipid bilayer, with proteins attached to either side or traversing them.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report