1. biology

    A group of specialized cells that transport fluids and nutrients is called a. a multicellular autotroph b. a methanogen c. an aggregation d. vascular tissue A?
  2. Health

    Essential nutrient? a) are made by the body b) only can be supplied adequately with dietary supplements c) must be obtained through diet d) consist of over 75 different types of nutrients
  3. Biolagy

    I a have a bioalgy test coming up on nutrients any idea on how to remember all the fats and such? Memorize them. Flashcards make good memory devices. thanks
  4. Biology

    Once blood picked up nutrients from the small intestine, it must pass through the liver via the inferior vena cava. Explain the importance of this pathway.
  5. Chemistry

    An element has bcc packing with a body-centered cubic unit cell. Its density is 19300 kg/m3 and the unit cell volume is 3.17 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures. The element rubidium has bcc packing with
  6. Math! Please Help!

    1. What is the simplified form of (–3x^3y^2)(5xy^–1)? I think it is 15x^4y 2. What is the simplified form of –9m^–2n^5 × 2m^–3n^–6? I have no idea on this one. :/ 3. A rectangular pasture has a fence around the perimeter. The length of the
  7. Engineering Linear Equation

    At your initial meeting with your business partners for CellGenTech, you propose that the rate of change in the number of newly introduced cell lines that the company scientists should be able to produce should be proportional to the number of cell lines.
  8. electrochemistry

    What is the anode and cathode of this problem? A chemist wishes to determine the concentration of CrO4-2 ions electrochemically. A cell is constructed consisting of saturated calomel electrode (SCE) and a silver wire coated with Ag2CrO4. The SCE is
  9. physics

    While riding in a hot air balloon, which is steadily descending at a speed of 1.39 m/s, you accidentally drop your cell phone. (a) After 4.00 s, what is the speed of the cell phone? (b) How far is the cell phone below the balloon after this time? d = m (c)
  10. physics

    While riding in a hot air balloon, which is steadily descending at a speed of 1.39 m/s, you accidentally drop your cell phone. (a) After 4.00 s, what is the speed of the cell phone? (b) How far is the cell phone below the balloon after this time? d = m (c)
  11. AP Biology

    Cells transport substances across their membrane. Choose THREE of the following four types of cellular transport Osmosis Active transport Facilitated diffusion Endo/exocytosis For each of the three transport types you choose, a. Describe the transport
  12. chemistry

    1. what would happen to the the cell potential in a voltaic cell if the salt bridge lost contact with one of the solutions? 2. would a reaction occur if solid tin was placed in a solution of copper II nitrate? If so, write the balanced net ionic equation
  13. Science

    Colchicine (F.W. 399.4), an alkaloid purified from the autumn crocus flower, blocks cell division by inhibiting mitosis. It is effective at concentrations of 0.1-1ug/ml. You have a cell culture with 40mls volume. How much colchicine do you add for a final
  14. Chemistry

    The electrochemical cell described by the balanced chemical equation has a standard emf (electromotive force) of -0.35 V. Calculate the value (J) for the Wmax that the cell can do under standard conditions. Round your answer to 3 significant figures.
  15. biochemistry

    Suppose the concentration of glucose inside a cell is 0.1 mM and the cell is suspended in a glucose solution of 0.01 mM. What would be the free energy change involved in transporting 10?6 mole of glucose from the medium into the cell? Assume T= 37 ?C.
  16. Science Ms.Sue

    Which phase in mitosis or meiosis are these 1.Chromosomes pair up and can exchange genetic material 2.The nuclear membrane in the daughter cells breaks down 3.The chromosomes line up along the center of the cell and two spindle fibers, one from each end of
  17. science

    Calculate the emf of the cell CR|Cr3+(0.1M)||Fe2+(0.1M)Fe Given, E°Cr3+|CR = -0.75v E°Fe2+|Fe = -0.45v Cell reactn 2Cr(s)+3Fe2+(aq) -> 2Cr3+(aq)+3Fe(s)
  18. Bio

    -What is the process of somatic (body) cell division called? -What regulates cell division? -What are the different modes of inheritance? -What are the sources of mutation? -What are the different types of mutation?
  19. chemistry

    The element strontium has ccp packing with a face-centered cubic unit cell. The volume of the unit cell is 2.25 x 10-25 L. Calculate the density (g/mL) of the element.
  20. Math

    a survey at your school found that 792 in 1,220 students have a cell phone. what percent of the students in have a cell phone? round to the nearest hundredth where necessary 6.49% 54.04% 64.92% 79.20%****
  21. Chemistry

    Calculate the cell potential for a cell based on the reaction Cu(s) + 2Ag+(aq) -> Cu2+(aq) + 2Ag(s) when the concentrations are as follows: [Ag+]= 0.53 M, [Cu2+] = 0.9 M. (The temperature is 25◦C and E0 = 0.4624 V.) Answer in V.
  22. algebra

    a survey at your school found that 792 in 1,220 students have a cell phone. what percent of the students in have a cell phone? round to the nearest hundredth where necessary 6.49% 54.04% 64.92% (i think that's the answer) 79.20%
  23. Math

    It takes a company 4hrs to build 1,300 cell phones. If the company continues working at the same rate, how many hours will it take to bulid 39,000 cell phones?
  24. chemistry

    The element lithium has bcc packing with a body-centered cubic unit cell. The volume of the unit cell is 4.32 x 10-26 L. Calculate the density (g/cm3) of the element.
  25. Biology

    Which is NOT a major function of proteins? A. Provides cell structure B. Stores energy for the cell C. Functions as regulator molecules in cellular activity D. Functions as carrier molecules is it D
  26. biology

    A human cell has 10 ^14 cells and each cell has about 6.4 x 10 ^9 nucleotide pairs of DNA. What is the length, in cm, of double helix that can be formed from the total amount of DNA in a human individual?
  27. Chemistry

    The element niobium has bcc packing with a body-centered cubic unit cell. The volume of the unit cell is 3.59 x 10-26 L. Calculate the density (g/cm3) of the element
  28. Algebra

    Suppose you are paying your cell phone bill. The function C(m) represents the cost C of your monthly cell phone bill with m minutes. Given the equation: What does the number 0.25 represent?
  29. chemistry

    Calculate the cell potential of voltaic cells that contain the following pairs of half-cells. a)A half-cell containing both HgCl2 and Hg2Cl2; lead in a solution of Pb2+ ions.
  30. Chemistry

    An element crystallizes in a body centered cubic unit cell. The radius of this element is 2.20A , and the density is .991 g/cm^3. how many moles of atoms are within one unit cell?
  31. electrochemistry

    Calculate the cell potential of voltaic cells that contain the following pairs of half-cells. a)A half-cell containing both HgCl2 and Hg2Cl2; lead in a solution of Pb2+ ions.
  32. Algebra

    Your cell phone plan costs 55 dollars a month, plus 35 cents per minute. Write an equation to represent the monthly bill of the cell phone plan.
  33. chemistry

    You have 5 metals A, B, C, D, E in 1.00M solutions of A^(3+), B^(3+), C^(3+), D^(3+), and E^(3+) respectively. When some of the half-cells are connected, the following results are found. Cathode /Anode /Cell Voltage C E 0.10V D B 0.08V A C 1.41V D C 0.55V
  34. Biology

    Which of the following will happen if mRNA fails to be translated? A The cell's nucleus will produce more chromatin. B. Ribosomes will not be able to create protein. C. Mitochondria will release ATP. D. The cell will produce more mRNA I think it's B
  35. Chemistry

    A concentration cell consists of two Sn/Sn2+ electrodes. The electrolyte in compartment A is 0.16 M Sn(NO3)2. The electrolyte in B is 0.86 M Sn(NO3)2. Which electrode is the cathode? What is the voltage of the cell? (Answer with two significant figures.)
  36. Chemistry

    A Cu/Cu^2+concentration cell has a voltage of 0.22v at 25 C. The concentration of Cu^2+ in one of the half cells is 1.5x10^-3 M. What is the concentrate of Cu^2+ in the other half cell? I think I will have to use Nernst equation, but I am so stuck! please
  37. chemistry

    Calculate [Fe^2]+ when the cell reaction reaches equilibrium? A voltaic cell is constructed based on the following reaction and initial concentrations: Fe^2+,( 0.0050 M ) + Ag+,( 2.5 M ) ----> Fe^3+,( 0.0050 M ) + Ag(s)
  38. Chemistry

    A concentration cell consists of two Al/Al+3 electrodes. The electrolyte in compartment A is 0.05M Al(NO3)3 and in compartment B is 1.25 M Al(NO3)3. What is the voltage of the cell at 25 degrees Celcius?
  39. Science

    5. Name two ways in which a large cell can minimize the negative effects of its size. -They can minimize their size by cell division. -???????? I cannot find this answer in my textbook. Can someone please help me?
  40. Biology

    Using the words hypertonic, hypotonic, and equilibrium correctly , predict what happens when, A) A living cell is placed into fresh water and B)A different living cell is placed into salt water.
  41. solar energy

    A solar cell with dimensions 12cm x 12cm is illuminated at standard test conditions. The cell presents the following external parameters:
  42. Chemistry

    The addition of aqueous ammonia to the cathode compartment of the cell described below reduces the cell potential. Likewise, the addition of aqueous ammonia to the anode compartment increases the cell potential. Zn(s)/Zn^2+(aq)//Cu^2+/Cu(s) Assume that
  43. Biology

    The endosymbiont hypothesis offers an explanation for how eukaryptoc cells could have obtained mitochondria and chloroplasts through a symbiotic relationship with prokaryotic cells that changed over time. What structural feature of prokaryotic cells might
  44. Science(cell Parts)

    My Project is a Cell City For Example, my city is McDonald's, so the Nucleus is The ordering desk, the Mitochondria is the workers, and the Wall is the Cell Membrane.I Don't have Anymore ideas For The Rest Of The Organelle. These Are The Organelle:
  45. Chemistry

    3. An electrochemical reaction occurs between an unknown element and zinc. The half-cell reaction for the zinc is: Zn(s) → Zn2+(aq) + 2e− The cell potential for the reaction is Eºcell = 1.83 V. a. Is the reaction spontaneous or nonspontaneous?
  46. Chemistry

    A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1
  47. Chemistry

    An electrochemical cell is based on the following two half-reactions: Ox: Sn(s)--> Sn^2+(aq, 1.70 M)+ 2e Red: ClO2(g, 0.220 atm)+e --> ClO2^-(aq, 1.80 M) Compute the cell potential at 25 C. I think I'm supposed to use the Nernst Equation for this,
  48. Chemistry

    A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1
  49. Chemistry

    An element has hcp packing with a hexagonal unit cell. Its density is 4.5 g/cm3 and the unit cell volume is 3.53 x 10-23 mL. Calculate the molar mass (g/mol) of the element to three significant figures.
  50. chemistry

    An element has hcp packing with a hexagonal unit cell. Its density is 21000 kg/m3 and the unit cell volume is 2.94 x 10-23 mL. Calculate the molar mass (g/mol) of the element to three significant figures.
  51. Biology

    c. The cytoskeleton of eukaryotes serves many functions. One of these functions is served in eukaryotes by a different major structure. Which structural feature is it? How do these different structures serve the same function in the two cell types? Is it
  52. Chemistry

    Determine the potential (in V) of an electrochemical cell using a gold electrode and gold (III) [0.0243 M] solution in combination with a manganese/manganese (II) [0.00567 M] half cell How on earth would I do this question? I just know Au(3+) + 3e- = Au
  53. chemistry

    A voltaic cell is constructed based on the following reaction and initial concentrations: Fe^2+,( 0.0055 M ) + Ag+,( 2.5 M ) ----> Fe^3+,( 0.0055 M ) + Ag(s) <---- its a forward and reverse arrow Calculate [Fe^2]+ when the cell reaction reaches
  54. college chem

    metallic iron crystallizes in a cubic lattice. The unit cell edge length is 287 pm. The density of iron is 7.87 g/cm^3. Calculate the mass (in grams) of one unit cell
  55. Physics

    Suppose that the electric potential outside a living cell is higher than that inside the cell by 0.079 V. How much work is done by the electric force when a sodium ion (charge = +e) moves from the outside to the inside? __________ J
  56. PHYSICS

    SUPPOSE THAT THE ELECTRIC POTENTIAL OUTSIDE A LIVING CELL IS HIGHER THAN THAT INSIDE THE THE CELL BY .068 V. HOW MUCH WORK IS DONE BY THE ELECTRIC FORCE WHEN A SODIUM ION (CHARGE = e+) MOVES FROM THE OUTSIDE TO THE INSIDE? ANSWER = ? J
  57. chemistry

    Write the equations describing the electrode reactions and the net cell reaction for this electrochemical cell containing indium and cadmium: This is what I have so far: anode: In(s) --> In^3+ + 3e- cathode: Cd^2+ + 2e- --> Cd (s) Need help writing
  58. chemistry

    A voltaic cell at 25oC consists of Mn/Mn2+ and Cd/Cd2+ half-cells with the initial concentrations [Mn2+] = 0.100 M and [Cd2+] = 0.0100 M. Use the Nernst equation to calculate E for this cell. Cd+2(aq) + 2e- = Cd(s) . . . . . . Eo = -0.40 V Mn+2(aq) + 2e- =
  59. science help ASAP please

    1. Angiosperms have organs such as ______________ and produce seeds. The are described as _________________plants. (1 point) flowers; vascular stems; pollinated rhizoids; vascular leaves; non-vascular 4. Of the following, which is NOT a characteristic of
  60. living systems / life process

    Which part of a plant holds it upright and allows nutrients an water to flow through it? A.flowers B.roots C.leaves D.stem
  61. science

    Some insects get their nutrients by sticking a needlelike mouth part into a plant. Which vessel do you believe they are tapping? We have no clue!!! Could you explain to us what the question is asking and help us get the answer? Thanks, Wizard
  62. Chemistry

    If a current of 3.00 A is applied to a cell containing a 400g copper anode, determine the final mass of the copper anode after the cell runs for 48.0h
  63. chemistry

    Answer the following for a body centered unit cell. type of packing type of holes # atoms / 1 unit cell coordination #
  64. Chemistry

    An element has hcp packing with a hexagonal unit cell. the volume of the unit cell is 5.71E-26 L. Calculate the density (kg/m3) of the element.
  65. Chemistry

    Calculate the cell potential for the electrochemical cell consisting of Ag metal in a 0.500 M AgNO3 solution and Fe metal in a 3.0 M Fe(NO3)3 solution.
  66. drivers ed

    I have to do a project and its for my drivers ed class. I chose to do Cell Phones and Driving. I need website sources but when I search for them I keep getting a bunch of articles talking about how that certain state or city has a new law banning cell
  67. Algebra

    Use the five steps for problem solving to answer the following question. Please show all of your work. Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes
  68. chemistry - exam practice help!!

    For the cell shown below, which will increase the cell voltage the most? Fe2+ | Fe3+ || Cu2+ | Cu A) Halve[Cu2+] B) Double[Cu2+] C) Double[Fe2+] D) Halve[Fe2+] E) Cut Cu electrode in half ... Ecell = E0 cell + 0.059/n * log([Cu+]/[Fe2+]) Ecell is directly
  69. Biology

    During the ______ pathway, a host cell infected with a virus lyses and releases new virus particles. During the _______ pathway, viral DNA replicates along with the cell, but new viruses are not immediately produced. Please help!
  70. Chemistry

    In order for a cell potential to be a standard cell potential, the concentration of all ions in solution must be ________ M, the partial pressures of all gaseous species must be _______ atm, and the temperature must be ________ K. I need help with the
  71. AP chemistry

    A concentration cell consists of the same re- dox couples at the anode and the cathode, with different concentrations of the ions in the respective compartments. Find the un- known concentration for the following cell. Pb(s) | Pb2+(aq, ?) || Pb2+(aq, 0.1
  72. Chemistry

    The following voltaic cell registers an E cell = 0.100V. Pt|H2(g 1 atm)|H^+(x M)||H^+(1.0 M)|H2(g 1 atm) What is the pH of the unknown solution? I am completely baffled as I was not aware until I read this question that pH could be found from voltaic
  73. Chem 1LC

    Could someone please help me with this problem!!?!? Thanks you so much!!! The reduction potentials for the species involved in an electrochemical cell are as follows: M+ + e– M is 0.50 V J+ + e– J is 1.20 V. All solutions are 1.00 M and J+ J is
  74. biology

    When the stereocilia of a hair cell in the inner ear bends, it causes: a. potassium ions to enter the hair cell b. you to hear low frequency sounds c. chloride ions to leave the basilar membrane d. all of the above
  75. Chemistry

    In order for a cell potential to be a standard cell potential, the concentration of all ions in solution must be ________ M, the partial pressures of all gaseous species must be _______ atm, and the temperature must be ________ K. I need help with the
  76. English

    1. Don't use a cell phone while you are driving. 2. Don't use a cell phone while you drive. 3. Don't use a cell phone while driving. 4. Don't use a cell phone driving. ----------------------------- Which ones are grammatical? Does #3 mean #1 or #2?
  77. Chemistry

    Design an electrochemical cell using Pb(s) and Mn(s) and their solutions to answer the following questions. I just want to see if my answers are correct. I drew the cell already. Thanks 1. Give the line notation for this electrochemical cell. Mn(s) ∣
  78. Chem

    Calculate the reaction quotient Q,for the cell reaction.The measured cell voltage is given.balane the chemical equation by using the smallest whole number coefficients. (a) Pt(s)Sn4+(aq),Sn2+(aq)||pb2+(aq),pb2+|C(graphite)(s) -E=+1.33V
  79. chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 1770 kg/m3 and the unit cell volume is 1.50 x 10-28 m3. Calculate the molar mass (g/mol) of the element to three significant figures.
  80. Anatomy & Physiology

    A patient is infected with an organism that enters the cell and uses the cell's energy parts to grow and multiply. What type of organism is causing this patient's infection? A. Protozoa B. Bacteria C. Fungi D. Virus Is it B??
  81. Chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 8.92 g/cm3 and the unit cell volume is 4.72 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures.
  82. Chemistry

    An element has ccp packing with a face-centered cubic unit cell. Its density is 8.92 g/cm3 and the unit cell volume is 4.72 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures.
  83. Chemistry

    What's the difference between a galvanic and electrolytic cell when trying to find which half-rxn is the anode or the cathode? So like when you have two equations, depending on what kind of cell it's in, how can you tell which one is the anode and which
  84. math

    A student observes two different types of cells under a microscope. She noticed that one cell had many more mitochondria than the other. What can the student predict about the cell with more mitochondria?
  85. body system

    A female gamete is a/an A. ovary. C. ovum. B. zygote. D. uterus. (B) I know that gamete is an egg or cell. zygote is a cell to right?
  86. chemistry

    3. For the reaction between Cu and Sn the potentials are given below; Cu2+(aq) +2e- -----------> Cu(s) Eºcathode = 0.34 (half-cell potential) Sn(s) -----------> Sn2+(aq) + 2 e- Eºanode = - 0.14 (half-cell potential)
  87. bio check

    in human (2n=46) mitosis result 2 cell with 23 chromoses and meosis result in (n=23) 4 cell with 46 chromoses... is this statment true ? please help me ....
  88. CHEM help needed

    how do i find the Volume of Atoms within Unit Cell in(Å^3)? I think it has something to do with avogadros number but i do not know exactly...so far i know that the volume of the unit cell is 47.045881 Å^3. PLEASE HELP
  89. chemistry

    Consider an electrochemical cell based on the reaction: 2H+(aq) + Sn(s) = Sn2+(aq) + H2(g). Which of the following actions would NOT change the measured cell potential? lowering the pH in the cathode compartment addition of more tin metal to the anode
  90. chemistry

    Consider an electrochemical cell based on the reaction: 2H+(aq) + Sn(s) = Sn2+(aq) + H2(g). Which of the following actions would NOT change the measured cell potential? lowering the pH in the cathode compartment addition of more tin metal to the anode
  91. Biology

    In a cell undergoing meiosis, which sequence of events is shown in correct order? A. the cytoplasm divides, chromosomes line up at the equator, nuclear envelope forms. B. chromosomes become visible, chromosomes line up at the equator, chromosomes gather at
  92. pre algebra

    Use the five steps for problem solving to answer the following question. Please show all of your work. Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes
  93. college chemistry

    A zinc-copper battery is constructed as follows: Zn | Zn+2(0.10 M) || Cu+2 (2.50 M)| Cu The mass of each electrode is 200.0 g. Each half cell contains 1.00 liter of solution. a) Calculate the cell potential when this battery is first connected. b)
  94. somatic vs. germ cell

    is polar body a germ cell?
  95. science

    what type of cell is mitosis? what type of cell is meiosis?
  96. Biology

    Yogurt contains fats, cholesterols, carbohydrates(fibre, sugar and starch) and protein. For each of the nutrients that this food contains: Explain how the molecule's structure fits it function?
  97. ecology

    What are some examples of advantages of flooding? I have the example of the floods carrying extra nutrients into the soil; therefore making it fertile, and it leaves behind a rich silt for further crops to grow. What else is there? Thanks
  98. Biology

    The lack of nutrients and molecular building blocks, cells not secreteing materials normally and improper ion balance are results of which organelle not functioning properly
  99. Science plz help

    Explain a process in the human body in which there is evidence of the cell cycle at work. Does Hair grow ? Do fingernails grow? The monthly cycle is also an example of cell growth. What about your increasing weight (getting tall, getting heavier)?
  100. physics

    A potential difference of 102 mV exists between the inner and outer surfaces of a cell membrane. The inner surface is negative relative to the outer surface. How much work is required to eject a positive sodium ion (Na+) from the interior of the cell? (in

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