• 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
What is the difference between Vertebrates and Invertebrates?
What is the difference between Vertebrates and Invertebrates?

... survive by stationary filter-feeding, in contrast to the numerous animals such as sponges, corals etc. Motility is a biological term which refers to the ability to move spontaneously and actively, consuming energy in the process. Filter feeding is a method of feeding where small food particles are f ...
Cells and Reproduction
Cells and Reproduction

... Our blood contains several different types of cells, red blood cells, white blood cells and platelets. The red blood cell’s job is to collect oxygen in the lungs and carry it to all the other cells in the body, from our brain to our leg muscle. Red blood cells are very, very tiny to let them squeeze ...
NYS Standards - Jamestown Public Schools
NYS Standards - Jamestown Public Schools

... life. Large organic food molecules such as proteins and starches must initially be broken down (digested to amino acids and simple sugars respectively), in order to enter cells. Once nutrients enter a cell, the cell will use them as building blocks in the synthesis of compounds necessary for life. ...
Six Kingdoms of Living Things Teacher Notes
Six Kingdoms of Living Things Teacher Notes

... Until the 20th century, most biologists considered all living things to be classifiable as either a plant or an animal. But in the 1950s and 1960s, most biologists came to the realization that this system failed to accommodate the fungi, protists, and bacteria. By the 1970s, a system of Five Kingdom ...
Sample question
Sample question

... Plants and animal cells are usually quite easily distinguished due to their different combination of organelles. Structures similar to both are the nucleus for holding genetic material and the nucleolus. Plants usually have cell walls which are made of cellulose, however the Euglena has a pellicle i ...
Akerley Biology Final Review
Akerley Biology Final Review

... appropriate number. You don’t have to write the date, but use a different color pen. f) Look at old tests, labs, and worksheets. g) Come to the review session: TIME:___________________; PLACE:______________________ ...
Exam review F14
Exam review F14

... Diagrams to label / identify – plant and animal cell, monosaccharide, nucleic acid, protein, phospholipid, triglyceride 1. Make a table with the following cell parts. In the second column give the function of the cell part and in the third column sketch what it looks like. Nucleus, nucleolus, riboso ...
What are our bodies built from? - Beck-Shop
What are our bodies built from? - Beck-Shop

... More information ...
Biology STARR-EOC Review http://nvhsvikings.wikispaces.com/file
Biology STARR-EOC Review http://nvhsvikings.wikispaces.com/file

... Plasma Membrane Lipid bilayer- surrounds the cell Controls what comes in and out of K, near 11 the cell Cell wall Thick layer outside the cell membrane of Structure and support Plants only, J plants Mitochondria Double membrane- shaped like a kidney Powerhouse to produce ATPL, 1 bean cellular respir ...
A - My CCSD
A - My CCSD

... (like your ears); it covers the ends of bones to allow movement and cushion shock. cell: the smallest unit of an organism that can perform life functions. cell membrane: the selectively permeable outer boundary of a cell that allows food and oxygen to move into the cell and wastes to leave it. cell ...
Cells, Tissues, and Membranes
Cells, Tissues, and Membranes

... Cytoplasmic organelles are "little organs" that are suspended in the cytoplasm of the cell. Each type of organelle has a definite structure and a specific role in the function of the cell. Examples of cytoplasmic organelles are mitochondrion, ribosomes, endoplasmic reticulum, golgi apparatus, and ly ...
Chapter-6-Cell-membrane-and-transport-of
Chapter-6-Cell-membrane-and-transport-of

... • Molecules of protein are known to be denatured when exposed to acid or high temperatures. Molecules of protein are known to be soluble in alcohol. • It is therefore concluded the cell membrane contains protein (results b and d – denatured protein allowed pigment to leak out) and lipid (results c – ...
Unit 1 Cell Biology Topic 3: Producing new cells
Unit 1 Cell Biology Topic 3: Producing new cells

... the new cells. Genes are the basic unit of inheritance, and are responsible for the characteristics of an organism (e.g. what it looks like, its behaviour and all its chemical reactions). Genes are located on chromosomes, which are threadlike structures found in the nucleus of most cells (remember r ...
Classes of cyclins
Classes of cyclins

... for example, entry into mitosis must always come after DNA replication. ...
Chapter 3 - Pelican Rapids School
Chapter 3 - Pelican Rapids School

... describe cells when looking at cork with a microscope. • Hooke observed cells in plants and fungi. • Finding Cells in Other Organisms In 1673, Anton von Leeuwenhoek discovered single-celled organisms (protists) in pond scum. Leeuwenhoek was also the first to see blood cells, bacterial cells, and yea ...
Living things
Living things

... through which material or substances are processed to obtain matter and energy for human activities. The respiratory system supplies the oxygen in order for the blood to deliver oxygen to all parts of the body and remove the carbon dioxide. It consists of the nose, trachea, bronchi, and lungs. The c ...
1.1 Modern Cell Theory- All organisms (living things) are composed
1.1 Modern Cell Theory- All organisms (living things) are composed

... of life. Different body tissues and organs can be made up of different kinds of cells. The cells in similar tissues and organs in animals are similar. The tissue and organs found in plants differ slightly from similar tissues in animals. Cells carry on the many processes that sustain life. All cells ...
Review Key
Review Key

... e. Vacuoles – contain the waste of the cell and also can contain the water. f. Chloroplast – organelle that contains chlorophyll, which photosynthesizes and stores energy in sugars. g. Ribosomes – rRNA, structures synthesizes proteins in a cell. ...
LIFE SCIENCE GLEs
LIFE SCIENCE GLEs

... number of cells involved (one body cell in asexual, two sex cells in sexual) and the number of gene sets (body cell has 2 sets, sex cells have 1 set each) passed from parent(s) to offspring). Identify examples of asexual reproduction (i.e., plants budding, binary fission of single cell organisms. Id ...
SULIT 4551/2 BIOLOGY/ P KERTAS 2 Sept 2011 2 ½ JAM BIOLOGY
SULIT 4551/2 BIOLOGY/ P KERTAS 2 Sept 2011 2 ½ JAM BIOLOGY

... P4 :Large water-soluble molecules / glucose /amino acids can pass through the plasma membrane by aided of carrier protein P5 : Pore protein allow small water-soluble molecules / ions to pas through the plasma membrane ...
Cell
Cell

... takes place ● All organisms undergo cellular respiration. During this process, glucose (C6H12O6) is broken down into carbon dioxide (CO2) and water (H2O) to release energy ...
Biology Syllabus
Biology Syllabus

... the major biological molecules (carbohydrates, of Biological understanding proteins, lipids, and nucleic acids) as related to compounds the survival of living organisms. 4.1.2 Summarize the relationship among DNA, proteins and amino acids in carrying out the work of cells and how this is similar in ...
Grade 7 Course Description – Life Science UNIT 1 Cell
Grade 7 Course Description – Life Science UNIT 1 Cell

... Many organisms (for example yeast, algae) are single-celled, and many organisms (for example plants, fungi and animals) are made of millions of cells that work in coordination. 7.2.a.3. All cells come from other cells and they hold the genetic information needed for cell division and growth. When a ...
AP Biology
AP Biology

... 3. Why are cells so small? Explain the importance of the surface area to volume ratio. ...
B2 Revision MATs - Hodge Hill College
B2 Revision MATs - Hodge Hill College

... Keywords: gall bladder, oesophagus, kidney, liver, small intestine, large intestine ...
< 1 ... 25 26 27 28 29 30 31 32 33 ... 90 >

Cell (biology)



The cell (from Latin cella, meaning ""small room"") is the basic structural, functional, and biological unit of all known living organisms. Cells are the smallest unit of life that can replicate independently, and are often called the ""building blocks of life"". The study of cells is called cell biology.Cells consist of cytoplasm enclosed within a membrane, which contains many biomolecules such as proteins and nucleic acids. Organisms can be classified as unicellular (consisting of a single cell; including bacteria) or multicellular (including plants and animals). While the number of cells in plants and animals varies from species to species, humans contain more than 10 trillion (1013) cells. Most plant and animal cells are visible only under the microscope, with dimensions between 1 and 100 micrometres.The cell was discovered by Robert Hooke in 1665, who named the biological unit for its resemblance to cells inhabited by Christian monks in a monastery. Cell theory, first developed in 1839 by Matthias Jakob Schleiden and Theodor Schwann, states that all organisms are composed of one or more cells, that cells are the fundamental unit of structure and function in all living organisms, that all cells come from preexisting cells, and that all cells contain the hereditary information necessary for regulating cell functions and for transmitting information to the next generation of cells. Cells emerged on Earth at least 3.5 billion years ago.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report