Homework Help

Explain how cholesterol metabolism is regulated by internalized cholesterol? I have been reading up about this quite a bit but find a lot of contradictions and irrelevant information. From what I have learned I know that HMGR plays an important role in regulating the synthesis of cholesterol but I am struggling to understand exactly how it does so. Also, are there any other ways that cholesterol synthesis and metabolism is regulated by internalized cholesterol?

Ques: An 8000 kg engine pulls the train of 5 wagons, each of 2000 kg, along a horizontal track. If the engine exerts a force of 40000 newton and the track offers a frictional force of 5000 newtons then calculate the force of wagon 1 on wagon 2. Ans ( I tried) : Total weight =18,000 kg Net force exerted= 40000 - 5000 = 35000 Accelration: 35000 / 18000 = 35 / 18 = 3.5 m/s^2

How is this equation derived (The energy of the target electron during Compton scattering)

So as my tech project for my GCSE I was given a problem. There isn't much point going into huge amounts of detail but essentially what I need to do is to create electricity from drainpipes. I do not know how to do this I know it would involve dynamos and such but if someone could give me a more detailed explanation that would be great Thanks in advance, Lewys

I'm sorry if I posted in a wrong place, I want to ask if I can use LaTeX synthax in this forum to type maths formulae and symbols Thanks

Let for j = 0,. . ., n aj = a0 + jd, where a0 and d are fixed real numbers. Calculate the determinant of the matrix A of size (n + 1) × (n + 1). Matrix A is below

Hi, I need help for problem 14. I don’t understand how to compare the second equation to the first so that I can answer in terms of F. Thank you.

Can anyone direct me to a summary of vitamin d and IBD? I’ve read so many articles and just looking for a summary

Let a 3 × 3 matrix A be such that for any vector of a column v ∈ R3 the vectors Av and v are orthogonal. Prove that At + A = 0, where At is the transposed matrix.

Hello I know how vitamin d is absorbed in the skin but looking how it is absorbed in the gi tract. The physiology. Can anyone explain to me or point me to some resources. Having a hard time finding some.

Fungi are a separate branch of the evolutionary tree to my understanding, how to they differ from the different branches? How are they the same? How does point of original effect how a fungi behaves? How has human interaction effected fungi evolution over time?

Hello there! I'm currently working on a research topic. I just need a deeper information about the properties of compounds, how do they are similar in character, how they can do certain things when combined. More like I want a book concerning on processes of how compounds can do. "Just like a cook book of chemicals' lol Please help me to study that will really a big help!

Hello sir How to solve this The region of DNA sequence that provide binding site for RNA polymerase is: 1. Terminator 2. Structural gene 3. origin sequence 4. promotor

What is Reaction mechanism of sodium hydroxide, ethanol and stearic acid?

Hi everybody! The last expression was derived by converting an underdamped harmonic oscillation to a travelling wave. Actually, I searched everywhere and I did not find such expression (it can be also wrong). The loss factor (l) and the wave number (λd) are replaced by an expression depended by the damped frequency. Although in most applications the damped frequency is calculated and not used as input (as the loss factor) to the expression, could the last expression be a valid solution for the underdamped wave equation when the initial frequency (ω0) is known? Or is the wavenumber correct for the damped wave expression?

I making some research, about effects of household antibacterial regents on bacterial colonies. So I grow bacterias from desk before regent was used and after. And problem that my stupid head thought let use grama staining method, now I have 8 photos from microscope and I need compere number of bacterias from each sample. Can someone can recommend program or method how count cells and give some tips how next time don’t make similar mistake, recommend methods to count cells (I don’t have expensive lab technologies). Can I somehow adapt this man's program? Also adding some photos from research: https://imgur.com/a/NK757e4

C(s, graphite)+H2(g)+O2(g)⇌CH3OH(l);∆Ho=−238.7kJ What would increase the value of Keq?

I’m really stuck on this problem. This involves the dissolving of Borax. Na2B4O7•10H2O(s)<->2Na^+(aq) + B4O7^2-(aq) + 10H2O deltaH=109kJ/mol deltaS= 340J/mol•K Kc=0.047@25C If the starting concentration of B4O7 is 0.17M and the sodium ions are 0.34M at 25C, which direction will the reaction proceed? I said forward because Q At what temperature would a mixture of these same starting concentrations be a saturation solution (i.e. be at equilibrium) And that’s where I’m stuck At what temperature would a mixture under standard conditions (B4O7=1M, Na=1M) be a saturation solution (i.e. be at equilibrium) And I’m stuck here again …

I have attached the question in a file to this post. I am taking an online calc 1 course and I am struggling with this concept of continuous and discontinuous functions. I know the answer to this question is b, but I do not understand why. I've spent a couple hours (yeah :( ) on trying to understand this problem but I STILL DON'T GET IT. Can someone explain it to me? Online videos are unhelpful and my textbook is not doing it for me.

How to find the volume of irregular object? Help me , please Thanks in advance

PLEASE HELP... thanks for any help.

Hi, I'm trying to solve the below equations, M7 and L7 are unknown ( I'm trying to get here : L7=(equation without M7 ) and M7=(equation without L7 )). I spent a lot of time without success any help will be highly appreciated. 1) R=I7-M7*COS(RADIANS((90-K7)+L7))+J7*SIN(RADIANS(90-K7)) 2) S=H7-M7*SIN(RADIANS((90-K7)+L7))-J7*COS(RADIANS(90-K7)) Thanks in advance.

The house was bought for $500 and sold for $ 700 , find the percentage profited that they got ? I just can't get my head around to find the% profit. Thanks for any help

I had some difficulty , with this problem in class yesterday. I don't know where to begin with. Thanks