science, biology

41,328 results, page 72
  1. Biology

    1. Which of the following is a biotic factor that might affect the life of a water-dwelling organism? A. Temperature of the water B. Speed of water current C. Pollutions in water D. Bacterial population in water My guess: D? 2. Which of the following
  2. Biology

    Hi all, Need help with this: What is the difference that you see on a EKG when you have non-transmural MI vs. transmural MI? a) In transmural MI the Q wave is amplified, and the R wave is depleted making the QRS complex look inverted b) In non-transmural,
  3. biology

    What forms of energy are involved in metabolism? Since this is not my area of expertise, I searched Google under the key words "metabolism energy" to get these possible sources: http://www.elmhurst.edu/~chm/vchembook/5900verviewmet.html
  4. biology

    what salts are present in the composition of human sweat. Find out what elements are present in the composition of human sweat and what salts are formed by these elements.
  5. Biology

    In a lab on lung capacity where lung volumes (Tidal Volume, Expiratory Reserve Volume, Inspiratory Capacity, Inspiratory Reserve Volume, and Vital Capacity) are measured... Why can't you measure the Inspiratory Reserve Volume (IRV) directly? (In the
  6. Biology

    In a lab on lung capacity where lung volumes (Tidal Volume, Expiratory Reserve Volume, Inspiratory Capacity, Inspiratory Reserve Volume, and Vital Capacity) are measured... Why can't you measure the Inspiratory Reserve Volume (IRV) directly? (In the
  7. Biology

    When temperature falls it is said that the substance excreted most will be water because a person doesn't sweat in the cold hence the water in the body needs an outlet to escape. However it is also known that the metabolic activities are higher in the cold
  8. Biology

    In detail can someone please explain to me how cooking eggs makes them safe to eat in connection with enzymes Thank you I understand that enzymes are killed because of the heat as it is a factor in destroying the enzymes activity but how does this explain
  9. Biology

    In a controlled experiment, a scientist is studying how long it takes pea plants growing in different soil types to develop flower buds. What is the manipulated independent variable? a) type of soil used b) number of flower buds produced c) how long it
  10. biology

    polar molecule are soluble in water. how does this activity demonstrate polarity of molecule that contain the -OH group. our activity was to do an experiment mixing 2 diff liquids together to see if they dissolve and tell if its polar or nonpolar. 1. water
  11. biology

    There is a beaker with 0.4% sucrose solution and the solute potential is -4. Inside the beaker, there is a dialysis bag with 01% sucrose solution, solute potential -1 and pressure potential 0. When the beaker is open to the atmosphere, what is the pressure
  12. Ap Biology

    In the case of water, solid water is less dense then liquid water. What is happening at the molecular level? a. Molecules move faster in ice than water. b. Hydrogen bonds break more easily in ice. c. Hydrogen bonds break more easily in water. d. Molecules
  13. biology

    A plasmid (vector) designed for use in bacterial cells is different from a plasmid (vector) designed for use in yeast cells. Listed below are three DNA features found on both plasmid types. If the DNA sequence of each feature could be the same on the two
  14. biology

    Workout a cross between a homozygous tall pea plant with axial flower (TTAA) and a homozygous dwarf pea plant with terminal flower (ttaa) Note:(a)considering the table that provides and summarize the contrasting character of pea plant,(1)state the
  15. biology

    7. Imagine you have 2 chambers connected by a flexible, semipermeable membrane and completely filled with solutions - one chamber contains 50ml of a 50mM NaCl solution (A), and the other (B) contains 100 ml of a 100mM NaCl solution? If the membrane permits
  16. biology

    The Dopamine molecule cannot make ionic bonds. Edit the dopamine molecule so it now can make ionic bonds.
  17. Biology

    Among humans, increased interest in food intake normally occurs _____. only after the production of glucose in the liver can no longer meet metabolic needs when fewer calories are taken in than are expended, but only after the body depletes its reserves of
  18. biology

    In a natural population of outbreeding plants, the variance of the total number of seeds per plant is 16. From the natural population, 20 plants are taken into the laboratory and developed into separate true-breeding lines by self-fertilization—with
  19. Biology

    An animal cell that is surrounded by fresh water will burst because osmotic pressure causes... A. water to move into the cell B. water to move out of the cell C. solutes to move into the cell D. solutes to move out of the cell
  20. Biology

    How can I describe the following things about water in sketches or drawings? please give me ideas 1.High heat capacity 2.High heat of vaporization 3.Water is a solvent 4.Water molecules are cohesive and adhesive 5. Frozen water is less dense than liquid
  21. Biology Diffusion

    This is what i read from wikipedia: "Dialysis tubing is not permeable to glucose." Is that true? Visking tubing (Dialysis tubing) DOES allow glucose molecules to pass through it right?? So what types of molecules can pass through visking tubing? Can
  22. biology urgent

    Glucose is transported into a cell through a process of co-transport, where it is moved against its concentration gradient through a membrane channel. Moving any molecule against its concentration gradient requires energy, but these glucose channels do not
  23. Biology

    Having a really hard time following this diagram of the Kreb cycle and I need to answer these questions: 1. Total number of NADH molecules produced for each glucose molecule in the Krebs cycle. A)2 B)4 C)6 D)8 E)10 2. The theoretical yield of ATP from each
  24. Physical Science

    I had a couple of questions for homework and I answered them the best I could. Can someone check and tell me if they are correct? 1.To describe the position of an object accurately, scientists use what? Ans- Coordinate Systems 2.In science, we have to
  25. Physical Science

    I had a couple of questions for homework and I answered them the best I could. Can someone check and tell me if they are correct? 1.To describe the position of an object accurately, scientists use what? Ans- Coordinate Systems 2.In science, we have to
  26. PLEASE

    ANYONE PLEASE REPLY MY OTHER POST (SCIENCE 7R: LAB QUESTIONS) IS MY ANSWER IS CORRECT ON #13????? PLEASE!!!!!!!!!!!!!!!!!!!!! PLEASE!!!!!!!! - Laruen , Thursday, December 1, 2011 at 6:33pm Chloroplast are used for food making (photosynthesis). That is only
  27. Biology

    Are all of these examples of activation energy? If not which ones aren't. 1.To go forward on your bicycle, you must paddle. 2. A wind gust knocks a chimney brick to the ground. 3. Sound vibrations move the hairs in your ears stimulating the nerves in your
  28. Science

    Hi i have a science exam on tuesday and really need some help to see if what im doing is right. The question is - How many electrons, protons and neutrons are in the following: a) Br1- b) Be2+ c) Ne d) P1- e) Fe AND MY ANSWERS ARE: a)35 electrons 35
  29. French-Simple question

    Im trying to find out what each person is studying. Every person in my text has a bubble over their heads, and in that bubble is a picture such as...one person had a bubble picture of a microscope over their heads, so that would mean that they are studing
  30. physical science

    The answer to this can be found more quickly by consulting either an online or hardcopy dictionary. Here is an online dictionary definition. Main Entry: ge·ol·o·gy Pronunciation: jE-'ä-l&-jE Function: noun Inflected Form(s): plural
  31. Biology

    (How would I go about doing this?) Design an experiment that tests the effect of different concentrations of carbon dioxide on the rate of photosynthesis. 1. A specific question easily measurable and clearly stated 2. A hypothesis that is clearly stated
  32. Biology

    Mutualism Commensalism Predation Parasitism Name the relationship A tick on a dog PArasitism A lion eating a zebra Prdation A roundworm in a human intesteine Parasitism A fly living on the back of a rhino Commensalism A clown fish living in coral clown
  33. biology

    In tomatoes, red fruit is dominant to yellow fruit color. A farmer has plants that produce either red or yellow tomatoes. he has signed a contract with a large seed company to provide pure red dees and pure yellow seeds. the do not want hybrids. How can
  34. Biology

    1. 525 jackrabbits in the desert. Big ears (B) are dominant among jackrabbits, while stubby ears (b) are recessive. Of the study of this population, 189 rabbits have stubby ears. Calculate: 1.The frequency of the "bb" genotype 2.The frequency of the "b"
  35. Biology - photosynthesis

    1. In measuring the amount of ATP and NADPH consumed by the Calvin cycle, you find 30,000 molecules of ATP consumed but only 20,000 molecules of NADPH. WHere did the extra ATP molecules come from? A) Chlorophyll B) photosystem II C) cyclic electron flow D)
  36. English

    I urgently need you to check these sentences for my Comemius project!!! I know it is long but what I need to say is quite complicated. I really hope you can help me. Tell me what you think of the project. 1) I'm terribly sorry I didn't manage to write you
  37. Math

    In a group of 40 students, all students study maths, 28 study biology and math, 20 students study geography and maths and x students study all three subjects. a. Draw a venn diagram to represent the information above, showing in terms of x, the number of
  38. Physical Science [repost]

    I had a couple of questions for homework and I answered them the best I could. Can someone check and tell me if they are correct? 1.To describe the position of an object accurately, scientists use what? Ans- Coordinate Systems 2.In science, we have to
  39. Biology

    8. Where is RNA formed? 9. Write out the pairings from DNA to RNA. 10. Where is RNA formed? To where does it travel? 11. What is the difference between mRNA and tRNA? 12. What are three bases of mRNA called? At what organelle are they read? 13. What is the
  40. Biology "Genetics"

    Red-green Color Blindness and Hemophilia A are both sex-linked traits in humans. Both genes are on the X-chromosome and are tightly linked. Consider the pedigree below. Individual 1 is homozygous normal. Individual 2 is both red-green color blind and a
  41. Biology

    What would you excrete in higher amounts in the cold weather? Many say water because water is retained in your body since sweating doesn't occur in the cold. However it is also known that metabolism is higher in the cold weather and hence more salts would
  42. Biology

    Okay my question has to do with a pedigree shown in an illustration. Since I can't show the illustration I'll do my best to describe it: There's a mother and a father and they have 4 kids: 2 boys, 2 girls. Circles represent females and squares males. A
  43. Science

    Alright i forgot my science book and theres a paper due soon so i was wondering if i could get some answers to these questions. List Three Ways That Substances can move in and out of a cell. In diffusion, molecules move from an area of _________
  44. biology

    which of the following is not a characteristic of life A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism which of the following must be true to consider something to be alive? A. it must be able to replicate it's
  45. biology

    which of the following is not a characteristic of life A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism which of the following must be true to consider something to be alive? A. it must be able to replicate it's
  46. Civics

    In the case The Senate Of Tennessee V. John Thomas Scopes, high school biology teacher John Scopes was accused of teaching content that violated a Tennessee law that stopped public school teachers from teaching evolution. Scopes voted this law , but felt
  47. Biology: I am really confused.

    What is an experiment group and what is a control group? I was thinking an experiment group were people who experiment the world around them out of curiosity.... and that a control group was people who tried to make the world around them better.... is that
  48. biology

    After the blood in is the left heart you would next find it (a)entering the lungs. (b)entering the tissues, like muscles. (c)entering the right heart. (d)leaving the lungs. (e)leaving the tissues, like the muscles. Please help
  49. Biology

    Conducting cells in xylem are: Sieve tube elements Tracheids Tracheids and vessel elements Vessel elements Tracheids and sieve tube elements please help with my homework thanks.
  50. Science

    Thank you very much for you invaluable help, Bob. Here is the last part of the same summary. 1) One of the other prominent scientists involved in the promotion of nanotechnology, Richard Smalley, has accused Drexler of ‘scaring our children’ and
  51. Biology

    If the fourth base in the original DNA strand (AAT-GCC-AGT-GGT-TCG-CAC) where changed from G to C, would it be... AAT-GCC-AGT-CGT-TCG-CAC or AAT-CCC-AGT-GGT-TCG-CAC
  52. Biology

    Which compound has the highest free energy and produces the most ATP when oxidized? A. acetyl CoA B. glucose C. pyruvate D. carbon E. both pyruvate and carbon I've spent the past hour looking for this answer within my textbook or through Google searches. I
  53. Biology

    Hi I checked all websites that have the gropus of arthropods and I cannot still clasify crabs ! What type of crab are you trying to classify? Since this is not my area of expertise, I searched Google under the key words "crabs arthropod" to get these
  54. Biology

    Suppose that a repressor regulated the expression of the galA gene. Which of the parenthesis would be correct? (((supposing hypothetical bacterium gene: "galA" – encodes an enzyme that is required for cells to digest the sugar galactose/and/ "argB" –
  55. Science - Please Check My Four Answers

    Please help me with the following questions: 1. Which is usually the best way to present or communicate inferred data? A. in a bar graph B. in a data table C. in a simple diagram D. in a written paragraph I know the answer isn't C or D(I got C wrong), but
  56. Biology

    The reproductive system of a male mammal is made up of... A. Claspers, prostrate gland, sperm duct and vas deference. B. Festis, prostrate gland, sperm duct and vas deferens. C. Oviduct, urethra, testis, and sperm duct. D. Testis, uterus, prostrate gland
  57. Biology

    In conventional human radiological imaging (e.g., MRI, PET, CT) of the head, the axial plane is synonymous with the horizontal plane. Which of the following statements about this plane is most accurate? The axial plane is an axis of symmetry in the
  58. science

    how is diamond connected to science? how is diamond connected to math? how is diamond connected to you? why is diamond important?
  59. Science

    Writeacher, can you please check if the use of scientific English is OK. Thank you. 1) One of the other prominent scientists involved in the promotion of nanotechnology, Richard Smalley, has accused Drexler of ‘scaring our children’ and promulgating a
  60. Science, Genetics

    Please help me with science genetics questions? Thanks to all who answer. :) 1. Chromosome pairs contain different versions of genes, which are called ________. 2. The process in which body cells are duplicated in order to grow and repair body tissues is
  61. science

    what is oxegen
  62. Science

    What is an example of inbreeding? Please tell me.
  63. Science

    What are floods?
  64. Science

    0.05 M KOH?
  65. Science

    What is the equator?
  66. Science

    6C+O2=CO2
  67. science

    what is grossular used for
  68. science

    what does immense mean?
  69. Science

    What is the name of the new ocean
  70. science

    What is an Isogenerator?
  71. Science

    Insert six G.M's between 8/27 and -81/16
  72. science

    what is h202
  73. Science

    what does H+ stand for?
  74. chemistry

    science
  75. Science

    What are the 5 kingdoms?
  76. science

    what are atoms
  77. science

    what is a machine?
  78. science

    what is a hypothesis? or something like that.
  79. science

    What is mole?
  80. science

    What is acceleration?
  81. science

    What is mixture?
  82. science

    what is i for glucose
  83. Science

    What does a thermohygrometer do?
  84. science

    NAME 20 flowers
  85. Science

    All about vector
  86. science

    what is computer?
  87. science

    What is an axis?
  88. Science

    What is a Wordsplash?
  89. Science

    What causes seasons
  90. science

    what is a meteorologist
  91. 13 colums science

    K S S S S S S J S S F S S S S S S S S S D S S R S S S S S S
  92. SCIENCE

    WHY IS RF VALUE ONLY UP TO 1 AND NOT ANY BIGGER?
  93. science

    what causes our floods?
  94. science

    what ph is an acid
  95. HELP IN SCIENCE ASAP!!

    PLEASE HELP!!
  96. science

    What are liked traits?
  97. science

    what is the KE of a 6 kg mass at 4 m/s
  98. Science

    What is the x and y axis
  99. Science

    3.365*10^5 to 3
  100. science

    what is scorpius