• 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
The Sonic Hedgehog
The Sonic Hedgehog

The Cell ppt
The Cell ppt

Cells
Cells

... pass through it)- it controls what goes in and out of the cell-allows certain molecules to pass through ...
Biology 12: Chapter 4 Biology 12: Chapter 4
Biology 12: Chapter 4 Biology 12: Chapter 4

Cell Structure and Organisation
Cell Structure and Organisation

... All  living  things  are  made  up  of  cells.  Prokaryotes  are  (usually)  unicellular  without  a   nucleus  or  other  membrane  bound  organelles.  For  example:  bacteria.  Eukaryotes   are  (usually)  multi  cellular  and  contain  a ...
Chapter 5
Chapter 5

... • double membrane • Smooth outer membrane serves as the boundary between the mitochondrion and the cytoplasm • The inner membrane is tightly folded, forming cristae • The cristae provide a large surface area on which many biogeochemical reactions occur • “powerhouse of the cell” ...
The bacterial ribosome, molecular machine and antibiotic target
The bacterial ribosome, molecular machine and antibiotic target

... In all living cells, ribosomes translate the genetic code in the form of mRNA into amino acids building proteins. During their function, ribosomes go through a cycle where they bind and release transfer RNA molecules and translation factors and undergo a series of conformational changes. Many aspect ...
Cell Structure and Function
Cell Structure and Function

... You have 3 minutes to compare your notes with a neighbor. Be sure to ask questions and fill in any blanks you may have in your notes at this time. ...
Human Protein Factories in 3D - Max-Planck
Human Protein Factories in 3D - Max-Planck

animal_vs_plant_cell_cycle_self_quiz
animal_vs_plant_cell_cycle_self_quiz

... a. ________________________ - The cell increases in size (period of growth) and synthesizes new proteins and organelles. b. ________________________ - The replicated centrioles separate and move to the opposite poles or ends of the cell. c. ________________________ - Sister chromatids or chromosomes ...
Cell Processes Review
Cell Processes Review

Cell Structure & Function
Cell Structure & Function

... Cell Membrane • Outer membrane of cell that controls movement in and out of the cell • Double layer ...
3 CellStructure I
3 CellStructure I

... Atypical Cell Walls ...
Cell Structure Project
Cell Structure Project

... organelle within a cell has a specific job requirement. For example, the Endoplasmic Reticulum is responsible for transporting materials throughout the cell, therefore, they could be compared to a highway system in a city. Lysosomes are responsible for clean up and digestion of waste materials, so t ...
File - MRS. WILSON Science
File - MRS. WILSON Science

... is a form of stored energy. This charge gradient can then be used to drive other pumps to transport molecules such as sucrose. Some molecules are too large to be transported through proteins. These molecules can be moved in vesicles, so they never actually have to cross the membrane. The movement of ...
AP Biology - SPS186.org
AP Biology - SPS186.org

... u process proteins u u ...
cell plate
cell plate

... Continuous process that divides a cell  Parent cell divides into two daughter cells  Each daughter cell has exactly the same CHROMOSOMES as the parent cell ...
Picture
Picture

... water based solution located in the cytoplasm that suspends all internal parts of the cell 3. Ribosomes: produces proteins 4. DNA: genetic material made of nucleic acids ...
8 Cell Tour 9 16 05
8 Cell Tour 9 16 05

... substances, even though those substances may not be very concentrated in the extracellular fluid. Embedded in the membrane are proteins with specific receptor sites exposed to the extracellular fluid. The receptor proteins are usually already clustered in regions of the membrane called coated pits, ...
8 Cell Tour 9 16 05
8 Cell Tour 9 16 05

... substances, even though those substances may not be very concentrated in the extracellular fluid. Embedded in the membrane are proteins with specific receptor sites exposed to the extracellular fluid. The receptor proteins are usually already clustered in regions of the membrane called coated pits, ...
Cell Review PPT 2
Cell Review PPT 2

... observe plant and animal cells. • Explain individual function and interrelatedness of organelles. • Describe the differences, similarities and evolutionary links between prokaryotic and eukaryotic cells. • Compare and contrast the structure and function of plant and animal cells. ...
that - - IES Alyanub
that - - IES Alyanub

... Mitochondria and chloroplasts are organelles that produce nutrients / energy. Both mitochondria and chloroplasts have fherr ...
The Endomembrane System
The Endomembrane System

... • Produce proteins for export out of cell • Protein secreting cells • Packaged into transport vesicles for export ...
STUDY GUIDE SECTION 5
STUDY GUIDE SECTION 5

... a. Na+ out of the cell and K+ into the cell. b. Na+ and K+ in both directions across the cell membrane. c. K+ out of the cell and Na+ into the cell. d. Na+ during some cycles and K+ during other cycles. 3. ______ The energy needed to power the sodium-potassium pump is provided by the a. binding of A ...
Chapter 7: Cell Structure and Function
Chapter 7: Cell Structure and Function

...  The cytoplasm includes everything INSIDE the cell ...
< 1 ... 313 314 315 316 317 318 319 320 321 ... 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