theodor Schwann work alone to develop the cell theory?

32,663 results

  1. science

    theodor Schwann work alone to develop the cell theory?
  2. 9th Grade Biology

    Cell theory is based on a series of discoveries. In 1655, Robert Hooke coined the word "cell" from his investigations of cork cells. Almost two hundred years later, Schleiden and Schwann proposed the cell theory that states that: All life forms are made from one or more cells...
  3. science

    Why didn't scientists before rorbert hooke develop the cell theory
  4. maths

    Driving to work alone. It is reported that 77% of workers aged 16 and over drive to work alone. Choose 8 workers at random. Find the probability that a) All drive to work alone b) More than one-half drive to work alone c) Exactly 3 drive to work alon
  5. Psychology

    In her lecture concerning scientific method, Dr. Smith insisted that each of the steps must be used in order to arrive at a scientific finding. She included directions to __________ in her list of necessary components. (Points: 5) form a question and design a procedure for ...
  6. Science Word

    Is cell theory is 1. the mayjor theory of life science 2. the cell is the basic unit of life 3. organisms are made up of one or more cells 4. all cells come from other cells I know it's 1 Im justing sure it's more than a answer. You (Ms. Sue) said that I can put the the ...
  7. biology

    ok so i was learning about cell theory and i am really stuck on this question The text describes one of the scientific theories of where life comes from(which was the cell theory). Find one other scientific theory of how life began and tell me about it. (There are many non-...
  8. Biology 100

    Choose one theory spontaneous generation theory or cell theory. Select one statement that corresponds to the theory you want to refute or suppot. I choose cell theory and the one statement that I choose is all living things are made up of cells. Provide evidence for or against...
  9. Human service

    Who developed the behavioral learning theory and explain the theory? Did John Watson, Ivan Pavlov and B.F. Skinner develop the behavioral learning theory? Also where can I found a explanation on this theory? Thank you
  10. science

    howwould u define these words cell, organelle, cell theory, cell wall , cel membrain, nucleus, organ/system tissue.
  11. Work like a scientist

    If an experiment disproves a scientists hypothesis,what should the scientist do next? A.)Develop a testable question. B.) Revise the hypothesis and try the experiment again. C.)Develop a theory based on the data gathered in the experiment. D.)Change the dependent variable. ...
  12. Biology - gylcolysis history (help+check)

    The process of glycolysis is thought to have emerged very early in the origins of life. What evidence to support this theory can you find in the material presented in this section? Be prepared to defend your ideas. Ans: is this question indirectly related to cell theory, the ...
  13. American Government

    1. Thomas Hobbes and John Locke were European philosophers who influenced American founding documents with which theory? A. social contract theory B. divine right of kings theory C. no taxation without representation theory D. equal pay for equal work theory
  14. Biology

    1. How can transport be disrupted in a cell? 2. How does the cell membrane work? 3. How does the cell communicate with the outside and inside environment? 4. How does the cell use 1-3 to help maintain homeostasis?
  15. Psychologhy

    Becky is struggling to learn her alphabet letters. Her kindergarten teacher, frustrated by failed attempts to teach her, says to Becky, "All the other girls and boys can write most of the letters and you can't even say their names." The teacher believes she is motivating the ...
  16. biology

    does the cell theory state that cell come from cells that already exist?
  17. biology

    does the cell theory state that cell come from cells that already exist?
  18. Physics

    The voltage across the cell membrance is 0.070 V the cell membrane is 0.10 µm thick what is the work done in joules to move one sodium ion (charge= 1.6 x 10 ^-19 C) from inside the cell to outside the cell?
  19. Physics

    The voltage across the cell membrance is 0.070 V the cell membrane is 0.10 µm thick what is the work done in joules to move one sodium ion (charge= 1.6 x 10 ^-19 C) from inside the cell to outside the cell?
  20. biology

    who discovered the cell theory? What are the 3 parts of the cell theoy?
  21. Schwann Cells

    Whay is schwann cells important??? http://en.wikipedia.org/wiki/Schwann_cell
  22. Science 7R

    contains all the same kind of cell???? what part of a cell is that or something? AIDS???? parts of a animal or plant cells (im not going to list them all because you guys already know) ???? electron microscope ???? tiisue ???? vaccine ???? virus ??? host cell ???? organ ???? ...
  23. english

    why is Theodor a hero and why is he so important
  24. Biology

    14. Surface area is an important factor in limiting growth cell because a. the cell may become too large to remove enough wastes. b. materials can't enter the cell if it's too large c. the cell can burst if the membrane becomes too large d. waste products can't leave the cell ...
  25. psy -revision

    match -Psychodynamic Theory -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural k. consists of five major personality factors which are reasonably stable elements of personality. These factors include extraversion, agreeableness, conscientiousness, neuroticism, ...
  26. Biology---Urgent

    14. Surface area is an important factor in limiting growth cell because a. the cell may become too large to remove enough wastes. b. materials can't enter the cell if it's too large c. the cell can burst if the membrane becomes too large d. waste products can't leave the cell ...
  27. Science 7R (Homework Check, answer quick)

    Can you check if the answr is correct and of there any any grammar mistakes. 1. Explain why the invention of the microscope was important in the study of cells? Answer - The reason why the invention of the microscope was important in the study of cells is because you can't see...
  28. science

    which of the following is not part of cell theory? A. cells are the building blocks of life B. all living things are made up of cells C. all cells are created from other cells though cell division<------------ D. The nucleus is the control center of the cell
  29. Science

    Which of the following is not part of the cell theory? A.Cells are the building blocks of life. B.All living things are made up of cells. C.All cells are created from other cells through cell division. D.The nucleus is the control center of the cell.***
  30. Science

    Which of the following is not part of the cell theory? Cells are the building blocks of life. All living things are made up of cells. All cells are created from other cells through cell division. (MY ANSWER) The nucleus is the control center of the cell.
  31. sci

    200- to 300-word description of the three branches and three systems of geology. Review Nebular Theory by clicking the Nebular Theory link on this week’s aXcess page. Respond to the following: According to the Nebular Theory, how did the solar system develop? How is ...
  32. physics

    A stonemason lifts a small boulder weighing Fw = 80 N from the ground onto a height = 1.50 m wall in the time t = 2.0 s. Using the values in the problem, calculate how much work she does. What power does she develop in watts? What power does she develop in kilowatts? What ...
  33. physics

    Given that the electric potential is 7.0×10^−2 V higher outside the cell than inside the cell, and that the cell membrane is 0.10 thick, calculate the work that must be done (in joules) to move one sodium ion from inside the cell to outside.
  34. Chemistry

    1) Assume that the reference half-cell is changed to a standard mercury-mercury (II) half-cell. a) What would be the reduction potential of a standard chlorine half-cell. c) What would be the cell potential of a standard chlorine-nickel cell. 2) For each of the following ...
  35. Chemistry

    1) Assume that the reference half-cell is changed to a standard mercury-mercury (II) half-cell. a) What would be the reduction potential of a standard chlorine half-cell. c) What would be the cell potential of a standard chlorine-nickel cell. 2) For each of the following ...
  36. History

    Who was Theodor Herzl and what role did he play in WWI? What are some of the issues related to Zionism
  37. sociology

    Which of three theoretical perspectives best explains the fact that Americans find work roles psychologically satisfying but also find them to stressful? Functional theory conflict theory symbolic interaction theory
  38. Science

    If an experiment disproves a scientists hypothesis, what should the scientist do next? A. develop a testable question B. revise the hypothesis and try the experiment again. C. develop a theory based on the data gathered in the experiment D. change the dependent variable. Is ...
  39. strategic management

    The purpose of this activity is to develop a research taxonomy related to the Strategic Management process. With this assignment, you are to investigate scholarly theories related to Strategic Management. The object of your taxonomy is to identify at least ten separate and ...
  40. Chemistry

    Consider the voltaic cell illustrated in the figure, which is based on the cell reaction: Zn(s)+Cu^2+(aq) -> Zn^2+(aq)+Cu(s) Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 52.0g of copper is plated out?
  41. Chemistry

    Consider the voltaic cell illustrated in the figure, which is based on the cell reaction: Zn(s)+Cu^2+(aq) -> Zn^2+(aq)+Cu(s) Under standard conditions, what is the maximum electrical work, in joules, that the cell can accomplish if 52.0g of copper is plated out?
  42. math

    Initially two painters are available to paint a picket fence. Peter alone could paint the fence in 6 hours; Pat alone in 3 hours. It is decided that they will work simultaneously to paint the fence. Before they start, however, along comes Mary, who alone could paint the fence ...
  43. Bio(its urgent!)

    according to cell theory, the cell is the basic unit of structure and function in the body. in two or more sentences, explain how this fact relates to the need for digestion. please i help! i have searched the sites but cannot find a answer...... plz help!
  44. Science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable. Is...
  45. science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable. Is...
  46. Science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable. Is...
  47. science

    If an experiment disproves a scientist's hypothesis, what should the scientist do next? 1. Develop a testable question. 2. Revise the hypothesis and try the experiment again. 3. Develop a theory based on the data gathered in the experiment. 4. Change the dependent variable. Is...
  48. Science

    If an experiment disproves a scientist’s hypothesis, what should the scientist do next? Develop a testable question. Revise the hypothesis and try the experiment again.*** Develop a theory based on the data gathered in the experiment. Change the dependent variable.
  49. Biology

    Without the invention of the microscope, would the cell theory have been possible? I don't think it would have been possible because through technology, the microscope, cells were visible. Without the microscope how could scientists have seen cells or discovered the cell ...
  50. psy-

    match -Psychodynamic Theory -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural E. Popular theorists include Maslow and Rogers. A. psychodynamic theory
  51. sociology

    Which theory, in conjunction with labeling theory, tries to explain how people define deviance in situations in everyday life? A. conflict theory B. functionalism theory C. network theory D. symbolic interaction i cant find this in my vocabulary list so i'm unsure of the ...
  52. Functions/Logarithims

    Energy is needed to transport a substance from outside a living cell to inside the cell. This energy is measured in kilo calories per gram molecule, and is given by E = 1.4 log (C1) / (C2 where C1 represents the concentration of the substance outside the cell, and C2 ...
  53. medicine

    What is the main difference between a stem cell and a cancer cell? A. A stem cell grows at a faster rate than a cancer cell B. A stem cell obeys signals to stop growth, but a cancer cell doesn't C. A stem cell is usually external; a cancer cell is usually internal D. A stem ...
  54. Math

    when linda and martin work together painting one room, they can complete the work in 5 hours. when linda works alone it takes her 7 hours to paint the same room. how long would it take marvin to paint the room alone?
  55. english

    What is the object of the preposition in sentence? He will walk alone from his office. 1)alone 2)children 3)under 4)the I say (1) alone
  56. English

    Can someone please tell me who she is refering to as "you" in this poem? Also, what the poem means, beyond the literal level. Thank you :) Alone Lying, thinking Last night How to find my soul a home Where water is not thirsty And bread loaf is not stone I came up with one ...
  57. English

    Can someone please tell me what's the "deeper" meaning (beyond literal) of this poem. I have a really hard time finding it. Thank you :) Alone Lying, thinking Last night How to find my soul a home Where water is not thirsty And bread loaf is not stone I came up with one thing ...
  58. maths

    A and B together can finish a piece of work in 12 days if a alone can finish the same work in 20 days in how many days b alone can do
  59. statistics

    Develop the estimated regression equation to predict the city score, given the Recession Resistance rating alone
  60. Social studies

    Which theory of migration states that people sailed down the West coast of North America to make settlements? A) European Migration theory B) Northern Asia Coastal theory C) Bering Land Bridge theory D) Polynesian theory
  61. Biology

    check my answers? 1. What is the difference between Darwin's theory of evolution and Lamarck's theory of evolution? A)Darwin believed that organisms changed gradually over time, but Lamarck thought they changed suddenly. B)Lamarck believed that organisms could acquire ...
  62. schwann cells

    are they found in central nervous system are they found in peripheral nervous system do they form a myelin sheath do they increase the speed of propagation of nervous impulses Thank you for using the Jiskha Homework Help Forum. Here is a site with the definition and yes, they ...
  63. Psychology 210

    I need help with the different Psychological theories 1) Psychodynamic Theory,2 learning theory 3) Humanistic theory, 4) Trait Theory 5) Sociocultural
  64. psy - revise

    match -Psychodynamic Theory -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural k. consists of five major personality factors which are reasonably stable elements of personality. These factors include extraversion, agreeableness, conscientiousness, neuroticism, ...
  65. psy 210

    Match the psychological theories with the appropriate statement(s): Psychodynamic Theory Trait Theory Learning Theory Sociocultural Humanistic Theory
  66. Science

    What type of scientific thinking did Wegner employ to develop his theory
  67. Science- Cells

    2 adjectives to describe each cell- nerve cell muscle cell bone cell and blood cell
  68. science

    What is the cell theory
  69. Chemistry

    The voltaic cell described by the cell notation has a standard emf (electromotive force) of 0.94 V. Calculate the value (J) for the maximum electrical work that the cell can do under standard conditions. Round your answer to 3 significant figures. Pt(s) / Br-(aq) / Br2(l) // ...
  70. Chemistry

    A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration of Cu+2 has fallen to ...
  71. Biology

    Which of the following must occur for a plant or animal to grow and develop normally? a) Sufficient oxygen must be available to stimulate cell division. b) Theorganism must recive a supply of the appropriate horones from its parents. c) It must be able to control the timing ...
  72. AP Chemistry

    A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is operated at 298 K with [Cu+ ] = 2.3 M and [I - ] = 3.3 M. (a) Determine E for the cell at these concentrations. (b) If [Cu+ ] were equal to 1.0 M, ...
  73. AP Chemistry

    A voltaic cell is constructed that uses the following half-cell reactions. Cu+(aq) + e- Cu(s) I2(s) + 2 e- 2 I -(aq) The cell is operated at 298 K with [Cu+ ] = 2.3 M and [I - ] = 3.3 M. (a) Determine E for the cell at these concentrations. (b) If [Cu+ ] were equal to 1.0 M, ...
  74. biology

    what the cell theory applie to
  75. 6th grade

    what is cell theory
  76. College Chemistry 104

    A voltaic cell consists of a Pb/Pb2+ half-cell and a Cu/Cu2+ half-cell at 25 C. The initial concentrations of Pb+2 and Cu+2 are 0.0500 M and 1.50 M, respectively. A. What is the initial cell potential? B. What is the cell potential when the concentration of Cu+2 has fallen to ...
  77. science

    Assignment says label the parts of a plant cell. I'm blind so I'm going to write the names and put their functions. Cell wall, strenghthens the cell. vacuole is where the cell sap is produced. cell membrane is on outside on the cell. It controls what goes in and out of the ...
  78. CHEMISTRY

    The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) ...
  79. CHEMISTRY

    The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) ...
  80. CHEMISTRY

    The half-cell, Tl | Tl+(1 mol L-1), is connected to a Pt | H+ | H2(1 atm) half-cell in which the concentration of H+ is unknown. The measured cell voltage is 0.0841 V and the Pt | H2 | H+ half-cell is the cathode. Standard reduction potentials are given on the next page. (a) ...
  81. Socioloy

    Cassie is a 15 year runaway who is assaulted. Which victimization theory would best apply to her stituation? 1)Victim precipitation 1)Lifestyle Theory 3)Deviant place Theory 4)Routine activities Theory
  82. psychology -

    I have to match the following: A. Individualism versus collectivism answer: Humanity theory B. Popular theorist Eysenck initiated the five-factor model. answer: Learning theory -psychodynamic -Trait Theory -Learning Theory -Humanistic Theory -Sociocultural
  83. Science

    Which of the following is not part of the cell theory? (1 point) Cells are the building blocks of life. All living things are made up of cells. All cells are created from other cells through cell division. The nucleus is the control center of the cell. 3. Dust mites are ...
  84. Biology

    Describe two scientific theory (atomic,kinetic,cell theory) and non scientic (moral, ethical, religious theories ).Differentiate between the scientific and non scientific theories explaining why there are some questions that science cnnot answer.
  85. Science.

    Whats the difference between a scientific theory and a regular theory? A theory may be about anything but a scientific theory is designed to explain some scientific principle. Why people shop at a certain store might be an ordinary theory but why AgCl is more soluble than AgBr...
  86. chemistry

    The reaction described by the equation Zn + Hg2Cl2 <--> 2Hg +Zn+2 + 2Cl is run on electrochemical cell. The E^0 of the cell at 25 degrees C is 1.03V. In the same cell, [Cl-]=.10 M and [Zn+2] is unknown, and the measured cell voltage is 1.21V. Compute the value of [Zn+2] ...
  87. biology

    what are the three parts of the cell theory?
  88. high schol sarasota

    cell theory
  89. Science 7R Q2

    What is the difference between a plant cell and an animal cell? a. plant cell have cell wall a animal cell don't b. a plant cell have cholroplast and a animal cell don't c. plant cell have a huge vacuole and a animal cell have a small vacuole d. animal cells have lysosomes but...
  90. English

    Can someone please help to find poetic devices in this poem? I know there's similes, alliteration and repetition. Can someone help me find some more? Any help would be appreciated :) Lying, thinking Last night How to find my soul a home Where water is not thirsty And bread ...
  91. Science

    What are the important dates in the history of the cell theory?
  92. Biology

    State the cell theory as we understand it today.
  93. History

    10. Many geographers, such as Elder, Knopp, and Nast, refer to theories that explain or inform our understanding of sexuality and space as........ A. queer theory B. heteronormative theory C. gender studies D. spatial theory E. modernization theory A
  94. English

    Can someone please help to find poetic devices in this poem? I know there's similes, alliteration and repetition. Can someone help me find about 5 or 6 poetic devices? Any help would be appreciated :) Lying, thinking Last night How to find my soul a home Where water is not ...
  95. Biology

    Microorganisms develop resistance to antimicrobial drugs in a number of ways, EXCEPT A. Producing an enzyme that deactivates the antimicrobial drug B. Changing the cellular permeability to prevent the drug from entering the cell C. Interfering with the cell wall synthesis of ...
  96. English

    Can someone please help to find poetic devices in this poem? I found a simile ("Their wives run round like banshees"), alliteration ("Alone, all alone" of "l" sound) and repetition ("Nobody, but nobody Can make it out here alone.")Can someone help me find about 3 more poetic ...
  97. Biology

    Compare the functions of a normal cell and that of a cancer cell with regards to cell division. Discuss the cell cycle control system and checkpoints and how these might be altered in a cancer cell.
  98. Science Ms. sue help

    what is the function of a cell wall A) to Protect and support the cell B) to preform different functions in each cell C) to prevent water from passing through the cell D) to prevent oxygen from entering the cell. Help!!!!
  99. a n p

    which structure regluates the transport of substances in and out of a cell? cell's cytoplasm cell membrane nuclear membrance cell wall I believe it is cell membrane
  100. math

    A and B can do a piece of work in 12 days. They started to work together but A left after a few days. If B alone worked for 20 days, the whole work was finished in 24 days. How long would A take to complete the work??? question is really confusing :/
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