science, biology

40,893 results, page 55

  1. biology

    two reasons potassium is more concentrated in urine than in the filtrate why are blood cells and proteins usually not found in filtrate? why are glucose and other nutrients found in the filtrate along with urea and other wastes?
  2. BIOLOGY

    A high-powered microscope that produces an image from scattered secondary electrons is the a. immunofluorescence microscope b. bright-field light microscope. c. transmission electron microscope (TEM) d. scanning electron microscope (SEM). e. confocal microscope.
  3. Biology

    Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your plants?
  4. AP Biology

    The type of learning that is involved in predator/prey interactions where an alteration in behavior is a response to stimulus is called? A. Habituation Learning B. Cognitive Learning C. Instinctive Learning D. Associative Learning E. Non-associative Learning Please, answer A.S...
  5. AP Biology

    They type of learning that is involved in predator/prey interactions where an alteration in behavior is a response to stimulus is called A. Habituation Learning B. Cognitive learning C. Instinctive Learning D. Associative Learning E. Non-associative Learning I believe it can ...
  6. Honor Biology

    In an experiment, plants were grown under colored filters that allowed equal amounts of light of different colors to strike different plants. Under which filter do you think plants grew the slowest? Why?
  7. Biology

    Suppose you have monohybrid pea plants in your garden and find that they produce round seeds to wrinkled seeds in the ratio of 3:1. If the alleles are designated R and r, respectively, what are the probable genotypes of the wrinkled seeds produced by your plants?
  8. biology

    The agricultural research facility during a research accidentally changed the DNA sequence of a wheat plant from GCCATGTT to GCGTACTT and this mutation resulted in a stronger plant variety. What kind of mutation did the plant undergo?
  9. biology

    The agricultural research facility during a research accidentally changed the DNA sequence of a wheat plant from GCCATGTT to GCGTACTT and this mutation resulted in a stronger plant variety. What kind of mutation did the plant undergo?
  10. biology

    What part absorbs light and converts it into nerve impulses What part bends light that enters the eye so that what you see is focused on your retina What part transfers the image the eye sees to the brain for perception
  11. Biology

    How does chloroplasts move when placed in a different solution? I understand that chloroplasts are just randomly scattered through out the cytoplasm, but what does placing the cell in a different solution that can be hypotonic or hypertonic affect the placement of chloroplasts?
  12. Geography/Science

    Science is the literature of truth? in other words, Science is knowledge socially produced... I need some opinions, do you agree or disagree, why? I choose disagree because even science has and will sometimes come to wrong conclusions. Thank you for using the Jiskha Homework ...
  13. Biology

    Researchers working on Alzheimers disease identify a gene which may help treat the condition., but use a shortened version of the gene ..which codes for all necessary amino acids .. can anyone explain how the shortened version may be obtained .. If any could flag the main ...
  14. Advanced Biology

    At the end of the Cambrian Period, fossil evidence indicated that: A.) a great adaptive radiation of amphibians occured B.) amphibian species reached their greatest number C.) most amphibian species became extinct d.) amphibians first appeared
  15. Biology -Please

    Can someone give me a web site that shows the internal diagram of a chicken wing: I need the tendon, ligament and cartilage. I have been looking a long time for chicken wing and even birds but can't find what I need. Thanks
  16. biology

    Need help with FOV area (mm2) totally confused? im confused i have the FOV diameter they are: 4x = 5 10x = 2 40x = 0.5 a classmate told me she thinks the area for 40 x is: pi(5/2)^2 = 19.6 not sure if that's true or how to do it for the low and medium, magnification. please ...
  17. Chemistry - Biology

    Explain why glucose is improtant to humans ? Ans:Glucose is important to the body cecause it helps the reporduction of cells, coposition of proteins and nucleic acids foundin all cells. It helps growth and repairs tissues . Is that correct??
  18. biology

    Small gene big plasmid Question 2 Part E wrong. Question 2 Part F Determine the DNA sequence of PCR products. I do not understand how to handle this problem. On home works they were wrong and the solutions were confusing. Please give me a clue.
  19. Biology

    When the CO2 concentration in the cells of a C3 plant is low compared with the O2 concentration, an enzyme combines RuBP with O2 rather than with CO2. What effect would this enzymatic change have on photosynthesis? Under what environmental conditions would it be more likely to...
  20. Biology - Diversity

    A scenario where bacteria will undergo sexually reproduction instead of taking the "safe route" and reproducing asexually. I know that they reproduce sexually when conditions are not favorable and will enter a dorment stage until conditions get better but what scenario would ...
  21. yo help!

    k PGAL may be converted to glucose phosphate right? what other products can be produced???? Glyceraldehyde 3-phosphate can be converted to dihydroxyacetone phosphate, and these two molecules can be joined by aldolase to form fructose 1 ... glyceraldehyde 3-phosphate can be ...
  22. biology

    which of the following is an example of human-caused durbance to an ecosystem a. a tsunmi destroys a coastal forest and causes flooding b. a river is diverted to irrigate farmlands during a drought c. after a volcanic eruption, global avarage temperatures lower*** d. the snow ...
  23. biology

    please help me unscrample the following words: (the space means thate the anagram has two words in it, but the space is not necessarily at the space) rmns teizysecntiore nt roetssieitrsic id ksdxlne so derrecisgntdie Thank you very much for your time! -Lily ...
  24. biology

    how does the life cycle of hatena compare to the origin of eukaryotic cells as noted in Margulis’ Endosymbiotic Theory? something about how one life form engulfs another and incorporates it, evolving until it becomes dependent on it and has created an entirely new life form?
  25. AP Biology

    What are the four basic levels of ecological study, and what is the focus of inquiry at each of these levels? I don't know what it's asking to start with and can't find anything relevant online, in my textbook or in my study guide! Since it says levels, I think it might be 1) ...
  26. biology

    1. We share certain cells with other animals. In birds, these cells are formed in the bursa of Fabricius. Name these cells. 2. Differentiate between plasma and serum. 3. State the different proportions (in %) that each neutrophil is present in the blood. neutrophil eosinophil ...
  27. Biology

    Hi can someone please help me with this? What are the major advantages and disadvantages of an arthropod's exoskeleton? For the advantages I have provides framework for support, protects soft body tissue and slows water loss in animals that live on land. but as for the ...
  28. Physical Science

    Hello! I need help with this science questions. Thank You! 2. One of the reasons E=mc^2 is important to us is because it explains how our sun produces huge amounts of energy through nuclear fusion of hydrogen atoms. Use this example to describe the relationship between the ...
  29. science need help

    So I have a portfolia for science and we have to make a food web and it has to be about animals native to were we live but I live in broken arrow and I just moved here so I know nothing like that and everytime I try to do the research I can never find anything so do any of you...
  30. science

    I'm in 5th grade and I'm doing a science project on if seawater can be desalted by freezing... I tested three cups of seawater, each with different times in the freezer.. I have my control which is the seawater at room temperature... What do I chart on my bar graph... do I ...
  31. Science

    Hi! I'm in 8th grade science 8-B in Connections academy. I have a question that I'm stuck on. Can anyone help me? Thx! 2. Where do most Earthquakes occur most often? Why I am taking a guess that areas such as California have more earthquakes than most. I don't know why areas ...
  32. Biology

    Can someone explain allopatric speciation and sympatric speciation. I know that allopatric speciation is because of geographic isolation. I don't understand sympatric speciaiton, though.
  33. biology

    which region produce the most fish A the Indian ocean B the Atlantic ocean C the pacific D the Atlantic an Indian ocean e none above
  34. Biology

    The gene for color blindness in humans is found on the X chromosome. A boy has a color-blind father. Will the boy be color blind? Explain.
  35. computer science

    How can i create my computer science project which is to draw a game and make a file on your game which you can create?
  36. Science And Technology Engineering Mathematics

    Do you know some site where can I look for Science And Technology Engineering Mathematics books?
  37. Science

    lesson 9: energy and the environment unit test science 8 A Unit 4: Energy and the environment Please HELPPPPPP!!!!!!!
  38. math

    Eighty students participate in an after school enrichment program consisting of science and creative writing. If 540 of the students take science and 45 take creative writing, how many take both subjects?
  39. European History

    Explain the role of science and empiricism in reshaping Europen cities in the nineteenth century. How did advancements in science and technology improve the lives of the working class in Europe? These sites may be of help. http://en.wikipedia.org/wiki/Modern_philosophy http://...
  40. 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.) x 7 10 19 9 20 22 6 ...
  41. 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.) x 7 6 9 11 11 5 14 8 ...
  42. Biology

    What will happen when deionized water is added to red blood cells and then left to sit for 15 minutes? Will the blood cells mix with the water immediately and make a paler solution or will they be more dense than the water and sink to the bottom?
  43. college biology-drug metabolism

    You are interested in examining the metabolism of a new drug that has been developed in your company. Briefly describe how you would determine whether cytochrome P450 is involved in metabolizing the drug, and if so, which subtype is involved.
  44. 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?
  45. Honors Biology - URGENT!!!

    In an experiment, plants were grown under colored filters that allowed equal amounts of light of different colors to strike different plants. Under which filter do you think plants grew the slowest? Why?
  46. Biology

    1.The four rows of data below show the boiling points for a solution with no solute, sucrose (C12H22O11), sodium chloride (NaCl), and calcium chloride (CaCl2) (not in that order). Which boiling point corresponds to calcium chloride?
  47. Biology

    You have a stock solution with following components: glucose: 44 g/L NaCl: 191 g/L Tris Buffer: 275 g/L You mix 71 mL of the solution with water and bring the resulting solution to a final volume of 750 mL. What is the final concentration of glucose in g/L?
  48. Grd.10 Science

    So i did a science lab today, and i am supposed to come up with the skeleton equation for it The chemical reaction is decomposition (starting with one compound that will break off into 1 or more compounds after reaction) This is what i have so far : Cu (CO3) ---> CO2 + ____...
  49. science Help for little brother

    I have no clue how to do this... For a science fair experiment, you decide to testa cartain type of plant to see how well it can grow when it is kept out of sunlight. For two weeks, the plant leaces stay greean then they begin to look yellow. Use the terms photosynthesis, ...
  50. MATH

    LAMONT IS REQ TO READ 1 BIO, 1 SCIENCE, AND 1 POETRY BOOK EACH MONTH. HIS BOOK CHOICES ARE: 2 DIFF BIOS 3 DIFF SCIENCE 3 DIFF POETRY HOW MANY COMBINATIONS OF REQ BOOKS ARE POSSIBLE?
  51. language arts

    Which sentence is punctuated correctly? a)Briana, my partner for the science project had some great ideas. b)Briana my partner for the science project, had some great ideas. c)Briana, my partner, for the science project had some great ideas. d)Briana, my partner for the ...
  52. Biology

    This is a 2 factor cross punnett square- An albino, nonhemophilic man, marries a normally pigmented, nonhemophilic woman whose father was hemophilic and whose mother was albino. What kind of children can they have and in what proportion? Hemophilia is a sex-linked trait.
  53. biology

    consider two plants with genotypes Rrtt and rrTt where red color is(R) is domiant over white(r) and being tall(T) is dominat over being short(t). complete the following punnett squares to determine the possible gametes each parent can produce
  54. Biology

    why is there no production of ATP when detergent is treated in a test tube with mitochondria? in Aerobic and anaerobic respiration what is the final metabolic breakdown of molecule? 1 pyruvic acid 2 acetyl coenzyme A 3 citric acid 4 reduced coenzyme FADH2 5) ATP PLEASSEEEEEEEE...
  55. Biology please help anybody!

    there's this a level question in a ten-year series book in 2008, the question asks what is the sequence in which it occurs: 1. polyadenylation 2. removal of introns 3. splicing exons 4. capping And the options given are: a) 1,3,2,4 b) 2,4,1,3 c) 3,1,4,2 d) 4,2,3,1 I've looked ...
  56. Biology

    Which one of the following organelles would be especially abundant in the pancreatic cells that produce digestive enzymes? A. rough endoplasmic reticulum B. smooth endoplasmic reticulum C. lysosomes D. microfilaments E. mitochondria Apparently the answer is not lysosomes, so ...
  57. 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)?
  58. Biology

    Distinguish between breathing and respiration , i wrote: Breathing is the process of taking in oxygen and eliminating carbon dioxide. Respiration is the breakdown of oxygen in the body- although both are needed for all living organisms Is this true? If not may you please fix ...
  59. 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 identity of the father of ...
  60. What is a biology lab practical?

    Is it a test on paper or can I look at notes and answer questions? Do I have to dissect something, have the TA ask me a question and answer instead of dissecting as a group? I've just been quizzing myself on parts of the animal in case we can't use notes, but I don't know how ...
  61. A - G requirements

    I mest up real bad my freshmen year, I took general sciene which doesn't help me get into university. Now I'm a sophomore and I just started taking Biology, how embarassing. Any advice on how I could catch up? Also, does anyone know if health counts for the A-G? I took health ...
  62. Biology

    Explain why ice forming within a living organism may result in its death. Candice/ Michelle (Whoever you are) I think if you read the link I left above for you, it will be clear. Hint* If ice expands when it freezes and the cell wall/membrane can't stretch, what's going to ...
  63. 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 transcripts at the ...
  64. Earth Science

    1. What are one internal and one external source of energy in the Earth system? 2. Earth scientists assume that the causes of natural events of phenomena can be discovered through... 3. Science constantly creates new technology. Does this new technology always benefit society?
  65. Earth Science

    1. What are one internal and one external source of energy in the Earth system? 2. Earth scientists assume that the causes of natural events of phenomena can be discovered through... 3. Science constantly creates new technology. Does this new technology always benefit society?
  66. Biology

    Explain the processes that take place in the stroma including the reactants going in and the products produced from these processes in (a) bright sunlight and in (b) darkness. (c) What happens over an extended period of darkness of many days? I don't understand this I didn't ...
  67. Biology

    To survive as an individual, all animals must maintain homeostasis. Which of the following is NOT a part of homeostasis? A.eliminating wastes from their body B. gathering and responding to information in their environment C. reproduction- to produce viable offspring D. ...
  68. biology /cell analogy

    Can you help me find an everyday object that has a similar function as : 1-Golgi Bodies an example 2-Lysosome an example kitchen garberator 3- peroximes example a gym 4-Vesicules/vacuoles an example water bottle 5-Cytoskeleton an example 6-Microvilli an example 7- Cilia an ...
  69. Science

    I need some ideas for a science project. I need to find a picture of an everyday object which has a similar job or function as that cell part. For example, the nucleus is like a brain. My list includes lysosome, golgi body, cell membrane nucleolus, mitochondrion, endoplasmic ...
  70. AED

    1. As a construct, what is your approach to teaching?How does inquiry-based learning differ from the tradional model, with the teacher as the source of all instruction? Provide exapmles of each style. 2. How can you provide relevant hands on learning ina science classroom when...
  71. biology

    I have another experiment that I am not clear about the results. Any help? Put water, hydrogen proxide, and manganese dioxide powder in test tube, see what happens. Then put sand in the mixture. Results? Then,put liver in it. What happens? Thanks for helping.
  72. Biology

    Which of the following cranial nerve nuclei is a branchial motor nucleus and is, therefore, found in an intermediate position in the brainstem tegmentum? oculomotor nucleus abducens nucleus dorsal motor nucleus of vagus Edinger-Westphal nucleus nucleus ambiguus
  73. biology

    This question consisted of a pedigree which involves certain inbred individuals which you are going to identify. The inbred coefficient is for one of the first cousins named Stormy is F = 0.08. An individual called Shady is a parent. Question: Is Shady inbred? How did you ...
  74. Biology

    3) For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area ...
  75. Biology

    3) For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area ...
  76. Biology

    3) For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area ...
  77. Biology

    For each of the following characteristics, will the migration of the protein speed up, slow down, or remain unchanged if you do not add SDS? a)increase molecular weight of protein b) increase concentration of acrylamide c)decrease charge on protein d) increase surface area of ...
  78. biology

    The plants are heterozygous at the locus for stem height. T is dominant to t. T confers tall plant height. When you count the progeny, you find that there are 188 tall plants and 62 short plants. Does this approximate the 3:1 phenotypic ratio caused by Mendelian inheritance?
  79. 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 (nutrients), injury, ...
  80. Help please!!

    I am currently inrolled in a biology class, I pay attentionin class, I take all the notes possible, I study for the test at least 4-5 days in advance. I am putting 110% of my effort into this class. I am an A student but I am getting d's on the tests. I don't know what to do. ...
  81. 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 berry plant and the ...
  82. statistics check

    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.) x 7 10 19 9 20 22 6 ...
  83. 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 free speech, mistreats ...
  84. Science

    Which of the following are examples of science? Mark all that apply. A. a journalist writes a story about a man who became rich by buying stock on Tuesdays B.a woman chooses an item to purchase based on its packaging C. a farmer consults a weather almanac to decide the best ...
  85. biology

    what cells are involved in the diffusion of substances? (Broken Link Removed) All cells are involved in diffusion, across thier surfaces and between the intracellular orgelles and the intracellular fluid.
  86. biology

    Think of diets from an energy perspective. Where is the energy coming from, and how many organisms does it move through before it gets to the human? In what form is most of the energy in when it gets to the human, and how is that energy unleashed by the body?
  87. Biology: Genetics

    How do nucleotides and hydrogen bonds affect the structure of DNA? Maybe something like nucleotides make up DNA and hydrogen bonds hold the nitrogenous bases together? Can you help me explain?
  88. Biology

    Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.
  89. Biology

    Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.
  90. biology

    Genetic question If a man with blood type A, one of whose parents had blood type O, marries a woman with blood type AB, what will be the theoretical percentage of their children with blood type A?
  91. Biology/Physiology

    What organs of the human body are involved in the urinary system and what is the specific purpose of those organs? How does the urinary system interact with other systems within the body?
  92. Biology

    Suffering from acute glomerulonephrtis? if a person has acute glomerulonephrtis what would be the test result (negative or positive)for. a) urine color b) biuret test c)test for iron d)test for urea
  93. Biology

    What is the function of lactose in the body? I know what lactose is, but I'm having trouble finding if it does anything in the body (give energy...?) And also, what is the function of fructose in plants? I'm having the same problem.
  94. Biology

    Assume that a cell culture has a density of 10^8 cells/mL. You transfer 20 microliters of this culture onto the microscope slide. How many cells do you expect will be in this 20 microliters drop you placed under the microscope?
  95. Biology

    What could be a benefit for a plant that can switch between cyclic and non-cyclic electron transport? Think about the products of electron transport and what products are needed for the Calvin Cycle.
  96. Biology Calculation

    If you had 1400 flies with 852 having red eyes and 548 having brown eyes, how many flies would be homozygous dominant red eye?
  97. biology

    A tall pea plants bearing violet flowers is crossed withshort pea plants bearing white flowers .work out the f1 &f2 generations.give f2 ratio
  98. Biology

    Which nucleic acid statement is true A. mRNA codes for DNA B. mRNA codes for proteins C. tRNA makes amino acids D. tRNA makes lipids I think B
  99. Biology

    which nucleic acid statement is true? A. mRNA codes for DNA B. mRNA codes for protein C. tRNA makes amino acids D. tRNA makes lipids I think B
  100. biology

    In Angus cattle, the fur color black (B) is dominant to the color red (b). If we cross a homozygous dominant bull with a homozygous recessive cow is it possible for the offspring to be red?
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