science, biology

41,099 results, page 71
  1. maths

    5. There are two groups of subjects one of which contains 5 science subjects and 3 engineering subjects and the other consists of 3 science and 5 engineering subjects. An unbiased die is cast. If the number 3 or number 5 turns up, a subject is selected at
  2. Biology

    2. Which statement best explains the effect of resources on population size? a. the exponential growth curve models the effects of limiting resources on population size b. Limited resources decrease the growth rate of population size c. Density-dependent
  3. 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
  4. Biology

    3) Caucasian humans have a gene which determines the curliness of hair. Individuals with straight hair are homozygous for the straight allele while those with curly hair are homozygous for the curly allele. Heterozygotes have wavy hair. a) If two wavy
  5. Biology

    In Siberian Huskies base fur color is represented by black & white fur BB, tan/yellow & white fur Bb, and white only fur bb. Siberians all posses two style of fur wire hair (W_) and smooth (ww). What would the genotype and phenotype frequencies be for a
  6. biology

    Given below is the sequence of the mRNA ready for Translation" 5' - AUG CUA UAC CUC CUU UAU CUG UGA - 3' a) what is the first codon technically known as and which amino acid does it code for? b) how many amino acid residues will make the polypeptide chain
  7. Science 8R - Volume Lab

    I doing this lab for my science class about volume. In class today I collected my data. I measure the regular solid (LxWxH) and as for the irregular solid I use water displacement by putting the irregular solid (that is small) in the graduated cylinder
  8. Biology

    Please answere these questions: identify each statement as observation, hypothesis, or prediction and then tell if it is inductive or deductive Male Red-winged Blackbirds display red wing patches to signal superiority to other males A male Red-winged
  9. Science

    I am doing a 3rd grade science project on the Sun. I have to create a "visual". I want to compare the size of the earth to the size of the sun. I found that you could put 1,000,000 earths inside the Sun. I would like to fill a container [representing the
  10. Earth Science

    for science i need to calculate and answer a fermi question. A fermi question is a scientific question which basically bizarre. Anyway, my question is "How many rabbits would it take to consume all the dandelions in central park if we were to cover it
  11. Biology

    You are observing a slide of green cells under the 4X objective. Each cell covers roughly 1/8th of the width of your field of view. How large of a diameter do these cells have? The equation I found is: Size of cell= field diameter/ # of cells that fit
  12. Science

    As an environmental science teacher, how would you respond to someone who tells you (a) that he or she does not believe in biological evolution because it is "just a theory," and (be) we should not worry about air pollution because through natural
  13. Biology

    What ABO antigens are present on the red blood cells of Mr. Green's blood? Mr. Green Anti A serum - no clump Anti B serum - clump Anti Rh serum - no clump
  14. Biology - Evolution

    In one sentence each, describe a) one positive effect of direct artificial selection b) one negative effect of direct artificial selection c) one negative effect of indirect artificial selection
  15. Biology Please help

    There are several genes that control eye color; eye color is therefore called a (A) Polygenic trait. Besides genes that directly control eye color, there are other genes that can affect the color of your eyes. For example, your eye color genes may code for
  16. Biology

    Please help me answer this question for my ecology class. Consider the following three populations. Population A has a type-1 survivorship curve, population B has a type-2 survivorship curve, and population C has a type-3 survivorship curve. All else being
  17. English

    Hello. Dear Ms.Sue, I would be very grateful for your advice. 1) Do you think it's possible to say "the holistic phenomenon of science" (meaning "science as a whole")? 2) Do you think I used the articles correctly in the following "the interaction of the
  18. Math (prob)

    The probability of an outstanding student pass a biology test is 60%. If he takes three test, which are the experimental results for each test? My doubt is if I should consider the pass=.6 since the first event or when it mentions that the probability is
  19. math

    In a survey of 150 students, 90 were taking algebra, and 30 taking biology. a. what is the least number of students who could have been taking both classes? b. what is the greatest number of students who could be taking both courses? c. what is the
  20. Biology

    If at noon today someone has 1 E. coli cell, in their gut/large intestine, and E. Coli does binary fission, in unison each thirty minutes, how many will one have in their gut at 11:55 A.M. tomorrow? (five minutes short of a whole day) I'm confused on how
  21. finance

    You have chosen biology as your college major because you would like to be a medical doctor. However, you find that the probability of being accepted to medical school is about 6 percent. If you are accepted to medical school, then your starting salary
  22. science

    I need help Please!!!
  23. science

    what is O2??
  24. science

    what is a science
  25. science

    What is science
  26. science

    if A-B=2C,A+B=4C and C=3i+4j, then what are A and B?
  27. science

    what does f-1 mean
  28. Science

    What is science?
  29. Science

    What is science?
  30. Science

    Nothing.
  31. science

    what is the science?
  32. science

    c ???
  33. science

    what is science????
  34. science

    i need help
  35. science

    what is science
  36. science

    is it b?
  37. science

    what does 4s^2 mean
  38. science

    how do you get help?
  39. science

    thanks for all your help!!! :P
  40. science

    what is science?
  41. science

    What is science???
  42. science

    What is science?
  43. science

    how many cm are in 2.5m ?
  44. Science

    1L = ?cL
  45. science

    5N*2m=
  46. science

    What are those
  47. science

    what is gu?
  48. biology

    1. From one molecule of glucose, which process generates the largest amount of ATP? a. Glycolysis in a prokaryotic cell under aerobic conditions b. Glycolysis in a eukaryotic cell c. the TCA (Krebs) cycle in a prokaryotic cell d. the TCA (Krebs) cycle in a
  49. Math

    There are 36 books on a bookcase.there are 9 nonfiction,12 fiction,and 15 science fiction. What is the probability of choosing a nonfiction book of choosing a fiction book of choosing a science fiction book?
  50. AP Biology

    Damaraland mole-rats are relatives of naked mole-rats. In their clans, too nonbreeding individuals of both sexes cooperatively assist one breeding par. Even so, breeding individuals in wild Damaraland mole-rat colonies usually are unrelated, and few
  51. AP Biology

    In 1918 a particularly virulent strain of influenza (an RNA virus) wiped out millions of health humans in the prime of their lives. Epidemiologists fear that such a super bug could revisit us in the future. And thus there was quest to find samples of the
  52. english/biology

    I was wondering if you can check to see if these are good predications, hypothesis and questions. Like does the grammar makes and stuff. Thank you Hypothesis : Temperature as one, environmental factor will affect the physiological functioning of the small
  53. Biology

    The gene for red hair is recessive to the gene for black hair.What will be the hair colour of a child if he inherits a gene for red colour from his mother and a gene of black hair from his father?Express with the help of a flow chart..if you can..otherwise
  54. BIO ?'s

    Why is life based upon the cell? More or less, why are cells necessary for life? Is there a limit to how large a cell can be? ** If anyone can help or just give me an idea to go on for this it would be helpful! Even a good site to start research! THANKS!
  55. Math

    Gerald can complete a math assignment in 2 hours and a physics assignment in 1 hour. If he has 8 hours to complete a set of assignments, how many math assignments can he complete if he decides to leave the science assignments for the next day? This
  56. Advanced Biology

    Hi could you help me with this problem as well? The alleles for red and white coat color in cattle show absence of dominance, the heterozygote being roan. A.In a freely breeding herd of 1000 head how many would you expect to be of each coat color if the
  57. 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
  58. 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,
  59. 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
  60. 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.
  61. 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
  62. 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
  63. 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
  64. 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
  65. 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
  66. 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
  67. 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
  68. 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
  69. 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
  70. 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
  71. 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
  72. biology

    The Dopamine molecule cannot make ionic bonds. Edit the dopamine molecule so it now can make ionic bonds.
  73. 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
  74. 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
  75. 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
  76. 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
  77. 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
  78. 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
  79. 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
  80. 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
  81. 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
  82. 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
  83. 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
  84. 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
  85. 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
  86. 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
  87. 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
  88. 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
  89. 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
  90. 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
  91. 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)
  92. 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"
  93. 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
  94. 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 _________
  95. 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
  96. 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
  97. 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
  98. 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
  99. 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
  100. 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