• 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
Lecture notes for the aging lecture
Lecture notes for the aging lecture

... BY DAF16 AND ARE ASSOCIATED WITH INCREASED LIFE SPAN CLASS II GENES ARE REPRESSED BY DAF16 AND ARE ASSOCIATED ...
Non-Genotoxic carcinogens Cell proliferation
Non-Genotoxic carcinogens Cell proliferation

The Incredible Edible Cell
The Incredible Edible Cell

... cell wall, but theirs did not. Their cell contained lysosomes and centrioles, but ours did not. ...
The Cell
The Cell

... • Cell structure is correlated to cellular function • All cells are related by their descent from earlier cells ...
Chapter 4 A Tour of the Cell
Chapter 4 A Tour of the Cell

... in a variety of cells and possess an assortment of functions – Examples are the central vacuole in plants with hydrolytic functions, pigment vacuoles in plants to provide color to flowers, and contractile vacuoles in some protists to expel water from the cell ...
Cells
Cells

... • All substances that enter or leave a cell must pass through the surface of a cell. • As a cell gets larger, it takes up more nutrients and releases more waste. • Cell size is limited to by a cells surface areato-volume ratio. • Cells with a greater surface area-to-volume ratio can exchange substan ...
Genetic screens: apoptosis in C. elegans
Genetic screens: apoptosis in C. elegans

... C. elegans is sexually dimorphic Many differences at the cellular level X:A ratio determines sexual fate ...
Meiosis
Meiosis

... When talking about Cell Size…… Smaller is Better! The larger a cell becomes, the more demands the cell places on its DNA, and the harder it is to supply with nutrients. ...
The Case Of The Damaged Cell
The Case Of The Damaged Cell

... ribosome. Ribosome are the smallest organelles. They are not membrane bound. Ribosome are either floating free or attached to the ENDOPLASMIC RETICULUM. Ribosome make proteins. The ribosome that float make fat. The cell membrane needs proteins and fats to repair its broken part. The blueprint is car ...
R 3.3
R 3.3

... nonpolar “tail.” Cells are both surrounded by water and contain water. In the cell membrane, phospholipids form a double layer, or bilayer. In this way, the polar heads interact with the polar water molecules outside and inside a cell. The nonpolar tails are sandwiched together inside the bilayer, a ...
class copy
class copy

... All factories have exterior walls that protect and support them and interior walls that create separate work areas. They usually have some kind of production line where a product is assembled and an executive department that decides what product is made. A finishing department processes and prepares ...
Chapter 4 Notes
Chapter 4 Notes

... (a) Microtubules are manufactured in the cell by adding dimers of α-tubulin and β-tubulin to an end of the hollow cylinder. Notice that the cylinder has polarity. The end shown at the top of the figure is the fast-growing, or plus, end; the opposite end is the minus end. Each turn of the spiral requ ...
PGS: 124 – 138
PGS: 124 – 138

... a. Integral – These run completely through the bi-layer from the outside to the inside. i. These function in the transport of molecules and foundation. (Help to maintain the INTEGRITY of the structure.) b. Peripheral – These are located on one side of the membrane. (They do not extend into the bi-la ...
Cytoskeleton
Cytoskeleton

... known as the centrioles which each make up of a ring of nine groups of microtubules. (see ...
49) Plants respond to their environment in many different ways
49) Plants respond to their environment in many different ways

... identify the cell structure you selected state one function of this cell structure identify one substance that is often associated with the cell structure you selected and state how that substance is associated with the cell structure identify one other cell structure and explain how it interacts wi ...
Prokaryotic Profiles: Bacteria and Archaea
Prokaryotic Profiles: Bacteria and Archaea

... 1) Small, circular double-stranded DNA 2) Free or integrated into the chromosome 3) Duplicated and passed on to offspring 4) Not essential to bacterial growth and metabolism 5) May encode antibiotic resistance, tolerance to toxins 6) Used in genetic engineering 3. Ribosomes: Sites of Protein Synthes ...
Cell Structure and Function
Cell Structure and Function

... compartmentalization (ex. Enzymes can be found here) ...
Cells - Ms. Racette`s Wiki
Cells - Ms. Racette`s Wiki

... Semi-permeable Membranes Cell membranes are semi-permeable or selectively permeable  This means that only certain molecules can diffuse through them including: ...
Chapter 9 Pre-test Answer Key 1. true 2. true 3
Chapter 9 Pre-test Answer Key 1. true 2. true 3

... 25. The fever slows down the production of new viruses. Most of your body’s chemical functions work best at 98.6 F. As the body temperature increases, the production of new viruses decreases. 26. Protozoans move by using specialized organelles. Diagram A represents cilia which are hair-like organell ...
Cell Structure and Function
Cell Structure and Function

... • Found in plants, fungi, & many protists • Surrounds plasma membrane; provides support and protection for the cell ...
Electrolytic Cells
Electrolytic Cells

... • Process is called electrolysis • This occurs if a voltage greater than that produced by the galvanic cell is applied to it • Electron flow is forced to operate in reverse • Reactions in each half cell will be reversed ...
Cell Organelle Project Name
Cell Organelle Project Name

... Booklet: Design a book that is user-friendly, visually appealing, and interesting. You can design yours in the style of The Magic School Bus Goes into the Cell, a comic book, travel brochure, or even a textbook! This option needs to have a lot of information and visuals! You should include typical ...
File
File

... • The solution with the lower solute concentration is hypotonic. • A solution which contains less dissolved salt than cellular content. • In biology, a hypotonic cell environment is one with a lower concentration of solutes than the cytoplasm. In a hypotonic environment, osmosis causes water to flow ...
Cells
Cells

... -found in almost all eukaryotic cells -contains chromatin (chromosomes) -contain nucleolus which assemble ribosomes -surrounded by a double-membrane layer called the Nuclear Envelope which allows material to move into and out of the nucleus (RNA) Cytoskeleton -a network of protein filaments that hel ...
Differentiate between active and passive transport
Differentiate between active and passive transport

... The movement of fluids and small molecules into the cell in vesicles. – Phagocytosis The movement of large particles or whole cells into the cell in vesicles. – Receptor-mediated endocytosis (not in your book) When particles bind to receptor proteins it causes the cell to pull the bound particles in ...
< 1 ... 671 672 673 674 675 676 677 678 679 ... 1231 >

Amitosis

Amitosis (a- + mitosis) is absence of mitosis, the usual form of cell division in the cells of eukaryotes. There are several senses in which eukaryotic cells can be amitotic. One refers to capability for non-mitotic division and the other refers to lack of capability for division. In one sense of the word, which is now mostly obsolete, amitosis is cell division in eukaryotic cells that happens without the usual features of mitosis as seen on microscopy, namely, without nuclear envelope breakdown and without formation of mitotic spindle and condensed chromosomes as far as microscopy can detect. However, most examples of cell division formerly thought to belong to this supposedly ""non-mitotic"" class, such as the division of unicellular eukaryotes, are today recognized as belonging to a class of mitosis called closed mitosis. A spectrum of mitotic activity can be categorized as open, semi-closed, and closed mitosis, depending on the fate of the nuclear envelope. An exception is the division of ciliate macronucleus, which is not mitotic, and the reference to this process as amitosis may be the only legitimate use of the ""non-mitotic division"" sense of the term today. In animals and plants which normally have open mitosis, the microscopic picture described in the 19th century as amitosis most likely corresponded to apoptosis, a process of programmed cell death associated with fragmentation of the nucleus and cytoplasm. Relatedly, even in the late 19th century cytologists mentioned that in larger life forms, amitosis is a ""forerunner of degeneration"".Another sense of amitotic refers to cells of certain tissues that are usually no longer capable of mitosis once the organism has matured into adulthood. In humans this is true of various muscle and nerve tissue types; if the existing ones are damaged, they cannot be replaced with new ones of equal capability. For example, cardiac muscle destroyed by heart attack and nerves destroyed by piercing trauma usually cannot regenerate. In contrast, skin cells are capable of mitosis throughout adulthood; old skin cells that die and slough off are replaced with new ones. Human liver tissue also has a sort of dormant regenerative ability; it is usually not needed or expressed but can be elicited if needed.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report