• Study Resource
  • Explore
    • 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
Chapter 3
Chapter 3

... Also called slime layer and glycocalyx. Inclusion/Granule—Stored nutrients such as fat, phosphate, or glycogen deposited in dense crystals or particles that can be tapped into when needed. ...
Cell membrane - Holy Family Regional School
Cell membrane - Holy Family Regional School

... instead. Diffusion through these channels is called FACILITATED DIFFUSION. • Movement of molecules is still PASSIVE just like ordinary diffusion, the only difference is, the molecules go through a protein channel instead of passing between the phospholipids. ...
two nuclei
two nuclei

... To determine the equality of nuclear division in circulating BRBC’s at a gross level, cells were classified as having either equally divided nuclei or unequally divided nuclei (Figure 4A and 4B). In 8% of BRBC’s, sister nuclei were of about equal size, while 92% of BRBC’s had unequal sister nuclei. ...
Untitled
Untitled

... Nuclear Transport ...
Ribosome locations
Ribosome locations

... Ribosomes are classified as being either "free" or "membrane-bound". A ribosome translating a protein that is secreted into the endoplasmic reticulum. Free and membrane-bound ribosomes differ only in their spatial distribution; they are identical in structure. Whether the ribosome exists in a free ...
Chapter_06
Chapter_06

... Components of the endomembrane system – which are regions of the cell that are composed of a membrane that transport things between different compartments of a cell: ...
Cellular Transport
Cellular Transport

... Exocytosis is the reverse of endocytosis. • And that is just as well. In 30 minutes an active cell like a macrophage (right) can endocytose an amount of plasma membrane equal to its complete plasma membrane. ...
Bio12_SM_Unit_01_Review final folio
Bio12_SM_Unit_01_Review final folio

Cell Cycle & Mitosis
Cell Cycle & Mitosis

... mitosis at all because bacteria have only one chromosome attached to a cell membrane and use fission to create more bacteria. ...
Cell Organelle Function Review Interactive
Cell Organelle Function Review Interactive

Atoms, Elements, Compounds and Mixtures
Atoms, Elements, Compounds and Mixtures

... • Lignin waterproofs the cell walls and prevents them from collapsing. This leaves a long column of dead cells • Water can pass through the cell walls through pits • No cell contents, nucleus or cytoplasm ...
The Cell Membrane
The Cell Membrane

... Cell (compared to beaker)  hypertonic or hypotonic Beaker (compared to cell)  hypertonic or hypotonic Which way does the water flow?  in or out of cell AP Biology ...
Investigation 1 - cloudfront.net
Investigation 1 - cloudfront.net

... coverslip carefully trying to avoid any air bubbles. NOTE: Make sure that the two liquids on the slide do not run together or touch each other. If they do, discard leaves and start over using fewer drops of liquid.  Wait two or three minutes. Observe each leaf under both low and high power lenses. ...
Classification
Classification

... Animalia ...
Incredible Cell Project - Streetsboro City Schools
Incredible Cell Project - Streetsboro City Schools

... OPTION ONE: 3D Model of a Plant or Animal Cell Make a three dimensional model of a plant or animal cell. Identify the type of cell (plant or animal). Include all of the appropriate organelles (11 for plant cells, 9 for animal cells) as listed in your organizer and label each directly on the model. W ...
Euglena Coloring
Euglena Coloring

... Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles. Euglena move by a flagellum (plural ‚ flagella), which is a long ...
Euglena - hrsbstaff.ednet.ns.ca
Euglena - hrsbstaff.ednet.ns.ca

... Euglenophyta. All euglena have chloroplasts and can make their own food by photosynthesis. They are not completely autotrophic though, euglena can also absorb food from their environment; euglena usually live in quiet ponds or puddles. Euglena move by a flagellum (plural ‚ flagella), which is a long ...
organelle in bacillus subtilis
organelle in bacillus subtilis

Slide 1
Slide 1

... this results in a distinct distribution of positive and negative ions inside and outside the cell ◦ typically the inside of the cell is more negatively charged this difference in electrical charge between inside and outside = electrical gradient because it occurs across the PM – we call this diff ...
Cells Review
Cells Review

... Endoplasmic Reticulum Cell Wall Cell Membrane ...
Create a Cell Project
Create a Cell Project

... the cell you chose to create. The cell organelles should resemble their actual structure within the cell or be related to its function. The cell may be made of any materials as long as it is in 3-D. You may choose to create an entirely edible cell which we will enjoy in class but this is not a requi ...
Part 1 - Jobworks Biology
Part 1 - Jobworks Biology

... available to the cell. This is why mitochondria are sometimes referred to as the power plants of the cell. They use energy from organic compounds such as glucose to make molecules of ATP (adenosine triphosphate), an energycarrying molecule that is used almost universally inside cells for energy. Sc ...
2.2 Cell Membrane and Transports
2.2 Cell Membrane and Transports

... Many polar and charged molecules, such as water, amino acids and sugars diffuse across the membrane with the help of protein complexes that span the membrane based on a concentration gradient from regions of high concentration to regions of low concentration. These transport proteins that extend thr ...
Sp100 is important for the stimulatory effect of
Sp100 is important for the stimulatory effect of

... domains such as a SAND domain and a HMG box. Both splice variants can be covalently modified by SUMO-1 and are transcriptionally upregulated by interferons (Guldner et al., 1992). When attached to DNA upon fusion to the DNA-binding domain of the yeast Gal4 protein, Sp100 inhibits basal transcription. ...
CellAnalogyCellProject
CellAnalogyCellProject

< 1 ... 131 132 133 134 135 136 137 138 139 ... 598 >

Cell nucleus



In cell biology, the nucleus (pl. nuclei; from Latin nucleus or nuculeus, meaning kernel) is a membrane-enclosed organelle found in eukaryotic cells. Eukaryotes usually have a single nucleus, but a few cell types have no nuclei, and a few others have many.Cell nuclei contain most of the cell's genetic material, organized as multiple long linear DNA molecules in complex with a large variety of proteins, such as histones, to form chromosomes. The genes within these chromosomes are the cell's nuclear genome. The function of the nucleus is to maintain the integrity of these genes and to control the activities of the cell by regulating gene expression—the nucleus is, therefore, the control center of the cell. The main structures making up the nucleus are the nuclear envelope, a double membrane that encloses the entire organelle and isolates its contents from the cellular cytoplasm, and the nucleoskeleton (which includes nuclear lamina), a network within the nucleus that adds mechanical support, much like the cytoskeleton, which supports the cell as a whole.Because the nuclear membrane is impermeable to large molecules, nuclear pores are required that regulate nuclear transport of molecules across the envelope. The pores cross both nuclear membranes, providing a channel through which larger molecules must be actively transported by carrier proteins while allowing free movement of small molecules and ions. Movement of large molecules such as proteins and RNA through the pores is required for both gene expression and the maintenance of chromosomes. The interior of the nucleus does not contain any membrane-bound sub compartments, its contents are not uniform, and a number of sub-nuclear bodies exist, made up of unique proteins, RNA molecules, and particular parts of the chromosomes. The best-known of these is the nucleolus, which is mainly involved in the assembly of ribosomes. After being produced in the nucleolus, ribosomes are exported to the cytoplasm where they translate mRNA.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report