Homework Help

Hello, I am having trouble answering this question from biomolecules unit lecturer at university: "If you used 1 microgram human genomic DNA for PCR amplification of 350 bp fragment of ALDH2 gene, after 30 cycles of PCR reaction, how much of the PCR products (in weight) should be yield if all the reagents are not exhausted and the PCR reaction is not saturated?" I know how to calculate copy number using the equation "number of copies = ( amount * 6.022x1023) / (length * 1x109 * 650)", but i'm not sure whether that equation is what I need to use here? I'm guessing the variables I have as options to put into an equation are: 1 microgram of DNA (or 1000 nanogram…

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What is fracking as bad as it looks in the media is it better than nuclear

What is the general principle of PCR-SSP? I get it uses sequence-specific primers to bind only to selected alleles but isn't this the principle in all PCR techniques?

answer the question related to class ninth science.

Answer this question please.

Thermal Radiation Laws.Consider two furnaces of the same size that emit thermal radiation. The thermal radiationspectrum of furnace A peaks at a wavelength of 1,000 nm, while that of furnace B peaks at2,000 nm. (a) In what portions of the electromagnetic spectrum do these furnaces emit most of their radiation? What are their peak wavelengths in angstroms (˚ A)? (b) According to Wien’s law: (i) Which one is hotter? (ii) What is the ratio of their temper-atures? © According to Stefan-Boltzmann’s law: (i) Which one emits more radiation (energy)? (ii)What is the ratio of the fluxes radiated by these furnaces?

I read that thé climate change due to pollution and greehouse gases but I'm not sure that ONLY pollution and greehouse gases are thé causes Does any body know other causes and how can limit this phenomen Any help here would be appreated

I read that the bore can have better stucture and flexible that the graphene but I'm not sure Does anybody khnow what is their proprieties and what are differences between them Any help here would be appreciated

http://imgur.com/a/xIydC The answers is b) ab≠1, but I have no clue how to get to that answer... Can someone help me?

Hi everyone i wrote my 3 min speech about meteors so i make it in a video and i want to post it here so anyone could gave me remarks and help improve my speech !? Is there anyone who wanna help me ? 🤗 Thank youu

a politician whose unltimate goal is to get elected is planning campaign ads for TV. In planning the ads, the politician is functioning at a ____________ level. (A) strategic (B) long-term © tactical (D) directional i think the answer id tactical. but after looking again i think it could be strategic.

Hi, I need some help with this problem. Genes Q and R are 30 map units apart. If a plant of genotype QR/qr is selfed, what percentage of progeny will be qr in phenotype? So i started off with crossing QR/qr with QR/qr, & the combination i have gotten were: Parental: QR/QR, QR/qr, qr/QR, qr/qr Recombinant: Qr/qr, Qr/QR, qR/QR, qR/qr I get that 30 map units apart will mean that it has 30% recombination frequency, but I have no idea where to go on from here. Please help!

The exercise says this: A metal stick of mass [latex]m[/latex] and length [latex]L[/latex], initial still, can slide on two long horizontal binaries without friction. A uniform vertical magnetic field is present in the region in which the stick can move. The battery [latex]G[/latex] applies a constant electromotive force [latex]\epsilon[/latex] to the circuit formed by the binaries and the stick, letting flow a current which direction is showed in the figure. Demonstrate that the velocity of the stick approaches a constant value [latex]v[/latex] and determine the module and the direction of it. What is the current that flows in the stick when this value is reached? …

Ab and AC are two chords of a circle of radius r such that AB=2AC. If p and q are the distances of Ab and AC from the centre, prove that 4p^2= p^2 + 3r^2.

I need to select a research topic with a biological theme. Each student will find at least TWO (2) primary research articles on his/her topic, write a research report containing comparisons and contrasts (as appropriate) on his/her topic based on the selected research articles. Example being Effect of X on X(not required just an example). 2 studies and ill have to compare. Maybe animal behavior studies but with different main authors. Can be animals or anything biology really. Any topic would be appreciated and Ill be seeing if I can find research papers on it. Thanks for the help! If you need anymore information just ask. Some of my classmates have started on a s…

Help! H2 is produced by the reaction of 121.9 mL of a 0.8995 M solution of H3PO4 according to the following equation. 2 Cr + 2 H3PO4→ 3 H2 + 2 CrPO4 (a) Determine the number of moles of H2. mol (b) Determine the mass (in g) of H2. g Molecules of I2 are produced by the reaction of 0.4544 mol of CuCl2 according to the following equation. 2 CuCl2 + 4 KI → 2 CuI + 4 KCl + I2 (a) How many molecules of I2 are produced? (b) What mass (in g) of I2 is produced? g 2) A compact car gets 29.4 miles per gallon on the highway. If gasoline contains 65.8% carbon by mass and has a density of 0.7715 g/mL, determine the mass (in kg) of carbon dioxide produced …

Methane is a very powerful greenhouse gas. One pound of methane traps 25 times more heat in the atmosphere than a pound of carbon dioxide. Methane is also the main ingredient in natural gas. Because methane can be captured from landfills, it can be burned to produce electricity, heat buildings, or power garbage trucks. What volume of oxygen is necessary to completely react with 8.46 x 1019 molecules of methane gas, CH4 during combustion? So I started with balancing the equation, which is CH4 + 2O2 -> CO2 + 2H2O So I solved this which is 6.3 * 10-3. Now I need help with this part: "If the reactant in the least amount were to be quadrupled, how many gra…

Explain in your own words this sentence “an MAP below 60 mm Hg produces syncope and an MAP above 160 mm Hg causes cerebral edema.”

A few days ago i came across a phenomenon that i've never seen before. I saw white mist/fog rise from a metal fence. To set the scene, it was a few days ago in the morning around 9 am, winter around -20 C, very slight snow (as in you can only notice if you pay attention to the ground and it sparkles). The fog itself wasn't that much but just noticeable enough to get my attention. This has been bothering me for a bit so i'd really appreciate if someone could help. The fog rose from the top of a metal sheet fence much like the following image and ask any questions that might help. Thank you.

Hi, In my chemistry class, we are doing a special stoichiometry project in which have to find out how much carbon dioxide is needed to extinguish a flame from a small candle. I was not sure of the best amount of CO2 needed for this task, so I was wondering if anyone would happen to know the best amount of CO2 needed (in mL or in L). Thanks in advance!

I'm taking an engineering intro class, and this problem has me stuck: "Vector R in Fig. 4.9 is the difference between vectors T and S. If S is inclined at 28 degrees from the vertical and the angle between S and T is 32 degrees, calculate the magnitude and direction of vector R. The magnitude of S and T are 19 cm and 36 cm, respectively. " Fig. 4.9 Is simply three lines pointing diagonally downward from the top right, with R being horizotal, T below R, and S below T (sorry, I cant find a picture to upload). I only have pre-calc under my belt (no physics) but I feel like this shouldn't be to hard to understand. I'm just finding it impossible to figure out HOW to solve …

Why does a sample in an NMR spectrometer spin, but in an MRI, the magnet spins?

One type of natural selection is balancing selection. One scenario that can lead to balancing selection is when a heterozygote phenotype has a fitness advantage. Which of the following are reasonable predictions of balancing selection due to heterozygote advantage? Assume that after 10 generations under the balancing selection, the f(A1) = 0.2, where “A1” is one of two alleles of a given gene; “A2” is the other allele. The f(A1) will remain roughly the same over the following generations. The f(A2) will increase, while the f(A1) will decrease. The genotype, A1A2, will become fixed in the population. …

You travel 3 m north in 1s, and 4 m east 2 s. Displacement: 5 m in 3s. Average veolcity is 5/3 m/s. or V north = 3 m/s, and v east = 2 m/s. Average velocity for trip is (allegedly) 3.6 m/s. Obviously this wrong, but conceptually I'm not quite sure how to explain why it doesn't work.