If you tiled a floor with the planar rings from the bases of all the DNA molecules of living creatures on Earth, approximately how many times could you cover the Earth’s surface? This is meant to be an estimation/Fermi problem so it does not have to be exact.
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If you tiled a floor with the planar rings from the bases of all the DNA molecules of living creatures on Earth, approximately how many times could you cover the Earth’s surface? This is meant to be an estimation/Fermi problem so it does not have to be exact.
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- For another project, you designed primers 1 and 2 with the sequences shown below. Your lab partner suggests you calculate the primer melting temperatures (Tm) using the formula: Tm = [(A+T) x 2°C] + [(G+C) x 4°C]. Calculate the Tm for Primers 1 and 2 and give your answers in the boxes provided below. You must give your answer as a whole number (no decimal places). Units (°C) are already shown so must not be included in your answer. Primer 1 (forward): 5' TTCGTCTGGTGAACTCAG 3' °C Primer 2 (reverse): 5' CAGGGTATGTCCGTATAT 3' °CThere is one base pair for every 0.34 nm of DNA and the totalcontour length of all the DNA in a single human cell is 2 m.Calculate the number of base pairs in a single cell. Assumingthat there are 1014 cells in the human body, calculate the totallength of DNA. How does this estimate compare to the distance from the earth to the sun (1.5 * 108km)?The chromosome of the bacterium (prokaryote) Escherichia coli has a size of approximately 4,000 kilobases (kb) [one kilobase = 1,000 bases]. What length of DNA (B form) would be contained in it? How does this length compare to the average size and/or volume of this bacterium?
- What is the concentration of a DNA solution that absorbs 0.812 and 0.463 at 260 and 280 nm, respectively? Is the DNA solution considered to be good quality? Why or why not?One gram of cultured human cells contains about 10^9 cells and occupies roughly 1 mL. if the average molecular mass of a base is 660 daltons and each cell contains 6,4 *10^9 bp, what mass of DNA is present in this one-gram sample? If all the DNA molecules in the sample were laid end to end to form a single thread. Would it be long enough to reach from the Earth to the Moon (385.000 kilometers).If DNA concentration is 2 grams, what would be the molar concentration of human DNA in a human cell?
- Why is the davson Danielli model wrong?if one base pair of DNA weighs 650 kDA, how much does the entire human genome with 3.3x109 weigh? How many molecules of pentanoic acid are in 3.20 moles of pentanoic acid? How many kilometers per hour are there in 1.98m/s?A light year is approximately 9.46 x 1012 kilometres. Calculate in light years, the approximate total length of DNA in all the undergraduate students studying at Cardiff University given that: (i) the human haploid genome comprises approx. 3.2 x 109 base-pairs (bp) DNA; (ii) 10 bp of DNA has a length of approx. 3.4 nm, (iii) an adult human is constructed from about 3.7 x 1013 cells (Bianconi et al, (2013), Ann Hum Biol 40, 463–471). (iv) There are approx. 23,800 undergraduate students at the University. Show your calculations in full.
- A packing plant fills bags with cement. The weight X kg of a bag of cement can be modelled by a Normal distribution with mean 50 kg and standard deviation of 2kg. a) If a bag is selected is at random, find the probability that the weight of the bag is greater than 55 kg. b) If three bags are selected at random, find the probability that 2 bags weigh more than 55 kg. c) Compute the probability in part a using RStudio.A compact disc (CD) stores about 4.8 × 109 bits of information in a 96 cm2 area. This information is stored as a binary code—that is, every bit is either a 0 or a 1. how many bits would it take to specify each nucleotide pair in a DNA sequence? how many CDs would it take to store the information contained in the human genome?The Bacteria Escherichia coli DNA genome has a molecular mass of about 3.1 X 10 9 D. In your answers, show how you came up to each result?(a) How many base pairs does this bacterium contain? (b) How many full double-helical turns does this DNA contain? (c) How long is this DNA in micrometer?