science, biology

41,099 results, page 57
  1. Science ...Urgent plz

    Describe, compare and contrast INDUCTION and DEDUCTION as methods of science – using examples where appropriate. Identity and solve a problem using both induction and deduction. Where appropriate illustrated why and how one would use experimentation/
  2. biology

    Minerals ener the plant through the soil solution. SOme are passively carried along with the ater that is taken up. Plants can also selectively absorb minerals and accumulate them. This requires active transport across a cell membrane. If it were not for
  3. Biology

    In the course of performing and interpreting daily vaginal lavages in a rat, a rat that had previously been exhibiting regular 4 day cycles starts a prolonged period of acyclicity which is dominated by cornified epithelial cells. A male rat also co-habits
  4. Biology

    If agglutination occurs when blood with a certain antigen and blood with the corresponding antibody mix, why is blood type O the universal donor? Wouldn't the A or B antibodies from the O type blood attack the blood antigens of the recipient and cause
  5. Biology

    1. Some people get repeated fungal infections because they cannot destroy these dangerous microbes after their white blood cells phagocytize them. This most likely means that these people have __________ that do not work properly. A. ribosomes B. lysosomes
  6. biology

    are the people with diabetes I normally skinny? because their body is unable to produce insulin, they must turn to other sources of energy like stored fat? http://www.associatedcontent.com/article/11204/juvenile_diabetes_type_one_diabetes.html Read the
  7. biology pleaseehelp!

    In order to produce many copies of a protein fast, the cell uses A. DNA replication. B. intron self-splicing. C. single-unit ribosomes for high speed translation. D. codon-anticodon reciprocal duplication. E. many RNA polymerase molecules to produce mRNA
  8. Psychology Help Please

    When rethinking a problem why do people do a social comparison? What school of thought did client centered therapy come from? What is the biology of love based on? If a person sees the glass half full, what type of outlook do they have? Human sexuality is
  9. biology

    What is the correct definition of a princible? a)A statement of a relationship between two or more abstractions. b)A simplified, symbolic representation of a theory or conceptual scheme. c)An abstract generalization that presents a systematic explanation
  10. biology

    What is the correct definition of a princible? a)A statement of a relationship between two or more abstractions. b)A simplified, symbolic representation of a theory or conceptual scheme. c)An abstract generalization that presents a systematic explanation
  11. Biology 101

    What are the factors that cause cells to reproduce in mitosis and meiosis depends on the cells. there's a huge difference between a livwr cell, nerve cell, and a bacterial cell. probably your instructor is looking for answers like: growth, food supply
  12. Biology

    Explain the importance of an arthropod’s exoskeleton. In your explanation, be sure to address how is it able to grow tens of times larger than it was at birth, even though it has an exoskeleton. Also discuss at least two benefits of an exoskeleton as
  13. Biology (muscle response)

    Suppose you are asleep and the doorbell rings. You stumble to your feet and move toward the door, open it and speek with your visitor. Think of the many changes occurring in your body as you awaken and respond. How does the three types of muscle tissue
  14. Biology

    When a grouse eats berries, the berry seed are eliminated as waste materials and may be dropped in another part of the forest where they may sprout and eventually grow into new berry plants. How would you classify the symbiotic relationship between the
  15. Health and science

    Explains the science, technology, engineering and/or mathematics behind a solar cooker that work day and night and how could a solar cooker that works day ajd night both address the everyday problems and have a broader impact locally or globally.
  16. Childhood Education

    Learning to make candy from a recipe would relate most directly to which two of the 13 activity areas? A Math and science B Social studies and science C Cooking and math D Social studies and cooking
  17. year 7 science

    My science homework is to collect 10 food labels which i have done and write down the food energy per 100g from each food in kilogrammes but the food labels i have have only got the energy in kj. i`m cofussed because i don`t understand the question and i
  18. statistics

    What is the probability that a student in a college of 650 students in both a math major and a computer science major ( assuming these events are independent) If there are 72 math majors and 105 computer science majors?
  19. program planning

    Learning to make candy from a recipe would relate most directly to which two of the 13 activity areas? A. Math and science B. Social studies and science C. Cooking and math D. Social studies and cooking 
  20. Biology

    Ovulation occurs by a surge in the secretion of what hormone? estrogen hormone luteinizing hormone follicle stimulation hormone progesterone hormone Tricky.. I believe its estrogen
  21. biology

    Sulfur has six electrons in its outer most energy level. In ionic bonding, it would tend to ­­­­­­­­­_____________________________. A. take on two more electrons B. give away two electrons C. give away six electrons D. not take on anymore
  22. biology

    Sulfur has six electrons in its outer most energy level. In ionic bonding, it would tend to ­­­­­­­­­_____________________________. A. take on two more electrons B. give away two electrons C. give away six electrons D. not take on anymore
  23. science

    is salad dressing - homogenous or heterogenous if it is homogenous is it solution or colloids 8th grade science " just says salad dressing"
  24. math

    The weight of 2 science fiction books and 1 autobiography is 5/6w pounds. What is the total weight of 4 of these science fiction books and 2 of these autobiographies?
  25. Biology

    Why does Beta Glucose chains have more weak bonds between the chains than there are between alpha glucose chains?
  26. biology

    how many chromosomes are present in ostrich? how many chromosomes are present in monkey? how many chromosomes are in lacto bacteria
  27. BIOLOGY

    1.What is the function of DNA? 2.Name 3 parts of DNA molecule 3.Describe the shape of DNA molecule
  28. Math,english,further math,government,CRS,lit in english,yoruba,civic,agric,biology

    The fourth and sixth term of an arithmetic progession are -4 and -10 respectively. Find A.the common difference B.the first term C.sum of the first twelve terms
  29. biology PLEASE ASSIST!!

    1.The structure and functions of the cell are controlled by what??? 2.Explain why DNA is able to play a role in the transmission of hereditary information. 3.State TWO functions of DNA 4. Explain how genetic fingerprinting can be used to prove is the
  30. Biology 30

    In what size populations might you expect it to be relatively common for alleles to become fixed? Why? I think that larger populations would be more likely to have fixed alleles, since perfect Hardy-Weinberg equilibrium states that there will be no change
  31. Biology

    How does biodiversity affect ecosystem functioning? How does biodiversity affect ecosystem stability and resilience? I need help with this please I do not understand anything of these questions.
  32. Biology

    The integumentary system includes • skin only** • hair only • nails only • skin, hair, and nails Is my answer correct? the **
  33. biology

    why does The sodium-potassium pump move potassium ions into and sodium ions out of a cell down a protein canal?
  34. biology/chemistry

    can stomach acid dissolve a chewing gum? can stomach acid dissolve iron? pls someone help
  35. biology

    What reactions go on in your brain when you fall asleep? If you could give me a website that goes INDEPTH as to what happens in the brain when you fall asleep that would be great!
  36. Biology - Name for membrane bound organelles

    Membrane bound organelles are also referred to as ... A) vesicles B) channels C) integral proteins D) a and b
  37. biology

    when robert hooke observed cork through his compound microscope , all that he could see were empty chambers. why were hooke's chambers empty
  38. biology

    I am a bit confused about the relationship between DNA and Amino Acids. Do DNA make Amino Acids? Thanks in advance.
  39. Biology (pics) (urgent)

    I need help finding a picture/diagram of "External Fertilization" and a picture/diagram of "Internal Fertilization" thank you very much!!
  40. Anatomy

    Our biology class is studying the human skeletal system this month, and I need to find some information on the fone bone for my report. Can anyone help me out? Thank you for using the Jiskha Homework Help Forum. Is some one joking with you? "Fone Bone" is
  41. Biology

    20. Three common characteristics of adult vertebrates are a. skull, notochord, and complex organ system b. backbone, segmentation, and open circulatory system c. two pairs of jointed appendages, cephalization, and internal skeleton d. hydrostatic skeleton,
  42. Biology

    20. Three common characteristics of adult vertebrates are a. skull, notochord, and complex organ system b. backbone, segmentation, and open circulatory system c. two pairs of jointed appendages, cephalization, and internal skeleton d. hydrostatic skeleton,
  43. biology

    hey! i've got a test on membranes in grade 11 bio in a couple of days, and i've been studying and whatnot. the only thing is, i'm having trouble rememberings all the terms and stuff. i know this is a long-shot, but does anybody have any ancronyms or word
  44. AP Biology

    Which of the following is probably the main factor responsible for the phenomenon of density-dependent inhibition? a. a local accumulation of growth-inhibiting factors b. a local deficiency of nutrients c. cells' inate "sense" of knowing when the organ of
  45. Biology

    In the classification of eukaryotes, protsists were once placed in a single kingdom. Briefly evaluate whether this classification system is accurate. Why might it be difficult to classify some slime molds as unicellular or multicellular? I know the first
  46. science

    Ivneed help on Life Science homework. the question is: How do seedless vascular plants reproduce? I don't get it. my other question is: HUH???????????? Vascular plants reproduce by releasing spores. Yes they do and it is actualy fasinateing. ps if any
  47. Biology

    1) The nose has small __________. 2) Hairs in the nose trap __________. 3) The nose makes a sticky liquid called __________.
  48. BIOLOGY-DNA FINGERPRINTING

    Okay soo i'm confused on DNA fingerprinting, i know what it is and everything but why do they call it DNA fingerprinting when a fingerprint is only a mark left by the person?
  49. Science 8R - help!!!!!!!!!!!!!!!!! (anyone????)

    Homework - Draw a graduated cylinder with different liquids in it (different colors) and different densities. Write the densities next to the liquid. What kind of liquid???? How will I know the densities???? What's the color of the liquid???? please help
  50. Theories in Science

    Why are theories "not proven"? Typically because they involve observations that are beyond our limits. Speculating about the universe is theory because of the size of the universe. Similarly, wetheorize about sub-atomic particles because we can't see what
  51. English

    I want to improve the flow of this sentence. I would greatly appreciate any insight, minor or major. Here is the sentence, which is intended as a thesis: L. Ron Hubbard, in founding Scientology, has created a dangerous contemporary cult that suppresses
  52. PreAp Physics

    You are walking from your math class to your science class carrying a book weighing 112N. You walk 45 meters down the hall, climb 4.5 meters up the stairs and then walk another 40 meters to your science class. What is the total work performed on your
  53. Political Science

    Need examples on a economical issues for my political science class. Anything would be helpfull. I was wondering if HIV/Aids, prostitions, discrimination, or sterotyping is a economical issues. Please give any other examples.
  54. Science Experiment Help

    Just need help answering this one question for my science experiment: "Name another mixture that could be separated like the sugar-water mixture." the sugar-water turned into caramel when I heated it... so what other mixtures do that? Thnx for the help!
  55. science

    Erin must perform a science experiment. She needs to dissolve 10 g of salt in 250 ml of water. She measures the water incorrectly and dissolves the 10 g of salt in 350 ml of water. Now she has no more salt. Explain what Erin can do to make the solution
  56. Science Energy

    My assignment was to give drawn examples of the 7 forms of energy. I am having trouble with Chemical and Nuclear. My science teacher used a plant as an example for chemical energy but I don't know what she meant. Also I can't think of an example for
  57. MATH-PERCENTILES

    I JUST TOOK A TEAS TEST(FOR PRACTICAL NURSING ADMISSIONS). THE REQUIREMENTS MUST BE A GRADE IN AT LEAST THE 40TH PERCENTILE IN EACH SUBJECT. THERE WAS A MATH, READING,ENGLISH, AND SCIENCE SECTION. TOTAL OF QUESTIONS WERE 170.MATH-45? READING-40? ENGLISH-55
  58. Science

    I need help with my science class. My teacher wants us to come up with property tests for many different substances to indentify them. I need three property tests for: Coal, Rope, Cloth, Plastic, Paper, Bean, Copper Granuals, Sand, Flower Petal and Rubber.
  59. Science - Mercury

    So I'm in the middle of working on a science portfolio and it says: How will you overcome these challenges with the design of your spacecraft? you see I'm planning my own mission to space and I'm traveling to mercury, but I don't know how my spacecraft
  60. Science

    [I choose b.] Why are there so many species still unknown to modern science? a.many of these species are found in remote environments. b.smaller species receive less attention than large organisms. c.Cataloging these species is a huge task d.all the above
  61. Genetics (science)

    Please answer my science question (in detail if possible) Q: in rats the gene for black hair colour is dominant over the gene for brown hair colour. Draw a plunnet square and use it to predict the fractions of both the genotypes and phenotypes produced
  62. biology

    Orange juice is often touted by nutritionists as being an excellent antioxidant. Within an essay response, discuss the following concepts: an antioxidant’s function, free radicals and their effect on the human body, sources of vitamin C, optimal delivery
  63. Biology

    You wish to produce a human enzyme, protein A, by introducing its gene into bacteria. The genetically engineered bacteria make large amounts of protein A, but it is in the form of an insoluble aggregate with no enzymatic activity. Which of the following
  64. Biology

    In which case would a widely accepted scientific idea MOST likely be revised? A) when an error is found in a previous calculation B) when scientists calculate a quantity with greater accuracy C) when several well-tested findings go against the accepted
  65. personal statement

    this is my personal statement. please check my grammar and what other stuff i can add or remove? thanks Ever since I was a little kid and till a year ago, I really didn’t know what I wanted to be in life. I imagined myself to be a teacher when I was 8
  66. science

    earth science Which ancient device for measuring time is similar to decorative garden sundails used today a.the shadow stick of the ancient egyptians b.the water clock of the ancient Greeks c.the weight -driven mechanical clocks of the 14th century d.the
  67. Biology(Anatomy&Physiology)

    1)Which group of organic molecules makes up your genetic code 2)A substance which tends to resist a change in the pH of a solution is called a 3)Which buffers is the most common in the body 4)Which of molecules is primarily made of CHON 5)Which is the
  68. biology -urgent...highly confused

    How does pH affect the activity of catalase? Consider both high and low pH, and explain your observations by discussing the effect of pH on protein structure. I cannot find anywhere in my notes, or text book, or even on the internet how pH affects
  69. biology

    1. What adaptive advantage did seeds provide -------------------------------------- Notes: Embryo is protected in a seed. The seed is modified for dispersal which is good b/c…. Once landed, the seed can remain dormant until… The rains come… The
  70. Anonymous -- Science question

    Anonymous -- Please click Post a New Question and then ask your question. Please be specific about the purpose of your science project, your grade, and the type of project that interests you.
  71. need ideas on science fair project!!

    im doing a science fair project on teeth.... and i need ideas. i hve already tried what kind of soda affects the tooth most, and i need more ideas! plz help!!
  72. statistics

    There are 44 mathematics major and 163 computer science majors at the college. How many ways are there to pick 2 representatives, so that one is a mathematics major and the other is a computer science major?
  73. biology

    it is not known if a tall pea plant is homozygous or heterozygous (a hybrid). you decide to do a test cross to find out. if there are 40 offspring and 7 out of them are short, what is the genotype of the unknown pea plant? draw a punnett square that
  74. Biology

    Can someone please explain what this article isn't talking about I couldn't post the link but you can find it online "The relationship between the volume of antimicrobial consumption in human communities and the frequency of resistance" Please don't just
  75. Human and Social Biology

    A calorimeter was used to oxidise completely 2g of a food sample,causing a temperature rise of 5degrees C in 100cm3 of water(this figure includes the water equivalent of the apparatus). How much energy was present in the food sample(in joule per g)?
  76. biology

    All of the following important concepts of population genetics are due to random events or chance except mutation natural selection the bottleneck effect the founder effect sexual recombination I am pretty sure that the answer would be "natural selection",
  77. Biology

    In 1999, Beverly Strassman published a study of menstrual cycling among the Dogon women in Mali. What did she find? Using her study results, what methods can you suggest reducing breast cancer in North American women who will have no children or very few
  78. Science

    To solve the problem of a polluted stream a scientist traced where the pollution came from. She determined that the pollution was coming from many small sources. She worked on a plan to help reduce the pollution to the stream. This is an example of
  79. Biology URGENT!!!!

    What are five characteristics that scientists use to group dissimilar organisms into common groups? List references too please. Thank you. http://faculty.fmcc.suny.edu/mcdarby/Majors101Book/Chapter_02-A_Bit_of_History/02-Explaining-Life-Classification.htm
  80. biology

    You are the director of research for a drug company. The following list of candidate drugs is brought to you. Which is the most likely to be worth developing as a cancer chemotherapy agent? A drug that a. interferes with cellular respiration b. causes
  81. Biology

    The combustion of petrol in a car engine releases about as much energy per gramme of fuel as the repiration of sugar in cells. Try to explain, in outline, the fundamental differences between the processes I am taking Biolagy right now and i am having a
  82. Biology

    What is the result of a cross of a heterozygous curly winged fly to a straight-winged fly? (Include both genotype and phenotype with fractions of each) Do I need to make a monohybrid cross or a dihybrid cross?
  83. Biology (PLEASE HELP)

    Suppose you are studying a population of sunflowers growing in a small field. How would you determine the population density of sunflowers in a square meter of the field and in the entire field? Describe your procedure.
  84. Biology

    How is sex (gender) determined in mammals? I was thinking that if the male gave over an X chromosome that the baby would for sure be a male because males have XY and if the male gave over an X then baby would for sure be a female because all females ar XY.
  85. Biology

    what would happen to the respiratory system if it didn't have the nose, pharynx, larynx, trachea, bronchi, lungs, and mucus? I know what would happen to the human body but what would happen specifically to the respiratory system? Thank you.
  86. Early Childhood Education

    Investigating the bugs the two children found on the playground and finding books to identify them instead of doing your scheduled science lesson for the day is an example of: integrated learning or relevant learning Would this be an example of relevant
  87. biology

    a woman whose father had hemophilia and whose mother was normal married a man whose father did not have hemophilia but whose mother did . if the couple's first child was a son what are the chances that he would show the trait of hemophilia?
  88. biology

    John has blue eyes, blue eyes are recessive to the dominant trait for brown eye color. his genotype is bb . What is johns phenotype? A. brown B. Bb C. Blue D. bb My best answer is B
  89. Biology

    A group of natural populations that are reproductively isolated from other such groups and which interbreed or could interbreed with each other is called a... a. biological genus. b. natural family. c. biological species d. biological phylum.
  90. Biology

    Explain the meanings of Mendel’s principle of segregation and principle of independent assortment. Under what circumstances does the principle of independent assortment hold true? Give an example in which this law does not apply.
  91. biology

    A sceitists gradually increases the amount of carbon dioxide available to a plant. The plant's rate of photosynthesis increases at first, but then levels off. What else might tyhe plant need to further increase its rate of photosnthesis?
  92. Biology of the environment term

    Teacher explained to us what limiting factor was but I'm not able to understand she said that a limiting factor causes increase in population but I not get how and why is called limiting factor than ? She also said how Phodphorus and nitrogen were limiting
  93. Biology -Nervous System

    A person touches a stove, withdraws his or her hand, and then yells. Why does the yelling occur after the hand is withdrawn? Does the person become aware of pain before the hand is withdrawn?
  94. Biology

    John has blue eyes, blue eyes are recessive to the dominant trait for brown eye color. his genotype is bb . What is johns phenotype? A. brown B. Bb C. Blue D. bb My best answer is B
  95. Biology

    The rate of oxygen uptake by gills depends on the surface area, the number, and the thickness of the lamellae across which oxygen must diffuse. What are two ways to increase the rate of oxygen uptake?
  96. math

    The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)
  97. statistics

    The computer-science aptitude score, x, and the achievement score, y (measured by a comprehensive final), were measured for 10 students in a beginning computer-science course. The results were as follows. (Give your answers correct to two decimal places.)
  98. Art

    Could you please check scientific English in this short dissertation? Thank you, Ms. Sue. 1) Conrad Waddington introduced the term epigenetics in the early 1940s. He defined epigenetics as ‘‘the branch of biology which studies the causal interactions
  99. Biology

    My question is about meiosis, well its not really a question I wanted to know if I was going in the right direction. On my assignment it asked what would happen if meiosis did not occur? If meiosis did not occur the number of choromosomes would continue to
  100. biology

    Data Table: Rate of Photosynthesis Trial # Number of Bubbles/Minute 1 2 3 4 5 6 7 8 9 10 Trial 1 1 4 6 9 10 12 13 15 18 20 Trial 2 3 7 11 14 16 20 25 28 32 35 Making a Graph 2. In the space below, make a line graph showing the data from both trials