Homework Help

Use set-builder notation to denote the set of all odd digits. Let O = set of odd digits Textbook answer: O = { x | x is an odd digit } = { 1, 3, 5, 7, 9 }. Question Why is 9 on that list of odd numbers when 9 is divisible by 1, 3, and 9?

I have attached the question that I am working on. I have completed part A and B but I am not sure how to do part C. I do not really understand what part C is asking me. Also, please let me know if I have done part A and B correctly. here is my work:

Degeneracy is the phenomena of having more than 1 codon coding for 1 amino acid. So non-degenaracy is when 1 codon codes for 1 amino acid. Unambiguity is also defined similarly; 1 codon can code for only 1 amino acid. Are there any differences between the two terms?

Use set-builder notation to denote the set of all even digits. Let E = set of even digits Textbook answer: E = { x | x is an even digit } = { 0, 2, 4, 6, 8 } Question: Why is 0 an element of set E?

I'm a student currently trying to do the ScienceBuddies Project "From Genes to Genetic Diseases: What Kinds of Mutations Matter?" (https://www.sciencebuddies.org/science- ... -mutations) and I'm struggling quite a bit. The thing I don't quite understand is why some mutations cause a disease while similar mutations don't. For example, Table 3 in the project site has recorded one amino acid change from Valine to Methionine, and this is listed as non-pathogenic (this particular mutation does not cause cystic fibrosis). However, when filling up the rest of Table 3 with other genetic mutations that ARE pathogenic, I noticed one in particular (this is taken from the NCBI…

If I'm asked to calculate the number of nucleosomes for an organism with a certain number of base pairs, I can easily calculate by dividing this value with the DNA base pairs per nucleosome. However, do I need to consider the linker DNA too? If I take the base pairs in just the nucleosome, I'd have 146 bp. But if I consider the linker DNA as well, I'll have a little over 200. My textbook says to consider 200 instead of 146. Can someone explain why that is so?

I am a high school student currently studying Mendelian genetics. I stumbled upon a question that said two plants with the genotypes PpQq each are selfed, resulting in the formation of 1000 seeds. The question then asks to find the frequencies of the following genotypes: Ppqq, PpQq, ppQq and PpQQ To solve this, I found the ratio (2:4:2:2), divided each by 16 and multiplied by 1000 to find the exact number of each progeny. This is probably a very basic and silly doubt, but I'm confused. I get that the probability of, say, 'Ppqq' is 2/16, but why do we have to multiply that by 1000? Can someone explain the right way to do this problem? Thanks.

This question isn't for homework but it was in a booklet we were given to help us revise, except we weren't given an answer booklet or worked solutions along with it. I don't even understand how to write out each side of the equation, let along do the oxidation and reduction reactions. The question is below: "Write half-equations and hence a balance overall ionic equation for the reaction of acidified potassium dichromate solution and a solution of iron (ll) nitrate. (Note the potassium and nitrate ions are spectator ions)." I'd really appreciate and explanation of how to get to the final answer!

Hi, I have been looking into modelling bioremediation of oil spills as a project and was wondering what types of bioremediators would be effective. I have done some online research and bacteria such as Bacillus Subtilis have come up, as well as the possibility of using things such as compost or manure, as they may contain bacteria which is capable of degrading hydrocarbons such as oil. I was wondering whether there are some other relatively easily sourced homemade additions which I could add to these, as well as how effective the methods mentioned above are. The Bacillus Subtilis is in a powdered form and is approximately 100 billion CFU per gram. Sorry if this question i…

I have a project and I don't know how to do it. I need to make a thermos to keep water cold. What can I do to make a thermos that can keep cold water cold for sometime? Can air be used as an insulator for this and how?

I had a question today as a part of my studies which was 1) If space is ever expanding what is the pressure on the creating space (universe) upon creation and 2) at what rate might you assume the quantum field is also being created and is it being affected by this pressure of creation. This is of course all theoretical and asking for what may lead you to create equations with principal. Personally I sometime like to think as the universe ever expands and brings in reality its also very similar to a computer game in which a player travels through areas of a map waiting for it to load upon entering.

I need to calculate the wavelenght of a ball travelling that is 0.435 kg and travells at 36 m/s. To calculate this i used the equations of the first picture where i put the two first functions equal to each other as they are both equal to E. If i then substitute c in the second function i become h.v = m. wavelenght^2.v^2. And after some rearranging we become wavelenght = the sqaure root of (h/(v.m)). but if i looked further into my formulas there was this exact same formula but without the square root. Is there a reason that i cant equal the two first fuctions because i dont understand why it does not work.

Hi, I need help with the diagram drawing. It is based around a science experiment that uses refraction, Thanks.

Show how to get a conformal map from the region outside a semicircle, C∖SR={(x1,x2):|x1|2+|x2|2=R2,x2≤0} to the region outside a disk D of radius R2–√ centered at the origin, C∖D , ending up with h(u)=iR+u+i⋅R2−u2−−−−−−−√2 , with u=x1+ix2 . I know that the idea is to use a Moebius transform to send the semicircle to two perpendicular lines through the origin (something like az+Rz−R ) keeping track where infinity goes, then compress the three quarters we get the outside sent too to a half plane (again keeping track of infinity), then send that to the unit circle with infinity to 0 and then invert with z→…

Activity 10.1 orgánica .pdf

Hi, blessing in the name of Yeshu. (It's my way of greeting, it's not exactly procelytism) I have been analyzing an article published by a man called Shaun Ward which is a response to studies on the Hadza by Herman Pontzer. I'm not very good with mathematics, I admit it. I do not rule out that there could be some errors in the text I published. url deleted In the first link of the article is the study I used, which is one of the oldest published by Pontzer on the subject. In that study there is a table with the percentages of body fat for each group. The conclusions I reached are that the amount of calories burned with exercise is very low, but it seem…

Hi guys, this is my first post here, I hope to have fun here. So, I need help with my grade 7 heat project, I need to make a thermos with a water bottle and other house hold items. The teacher will put hot water in each person's project, and after a certain period of time, will measure the temperature of the water, and the group with the warmest water wins. I'm thinking of wrapping the whole bottle with thick yarn first, put a layer of Styrofoam under the bottle, and cut a hole into two Styrofoam bowls and put packing peanuts/ newspaper balls in the bowls and taper the two bowls together and slide it over the bottle where the circle is. Then wrap the whole thing in f…

Hello, for a school project we need to shape tomato leaves into an bio end product. This could be anything from construction materials to bioplastics. I'm a bit stuck at the moment on what to choose exactly and what would be the most achievable and practical. The tomato leaves are already dried, so the only use for them would be extracting cellulose and lignin I guess, although I have no idea what to do with that. Does anyone have any ideas or advice that might help us?

This is a multi-step exercise. It would be very helpful if somebody could check my step(s) as I go. @joigus, I'm sure it is a child play for you. I'd like to make sure that I've derived correctly the equation of motion for this Lagrangian: \[\mathcal L=- \frac 1 2 \phi \Box \phi + \frac 1 2 m^2 \phi^2 - \frac {\lambda} {4!} \phi^4\] The EL equation: \[\frac {\partial \mathcal L} {\partial \phi} + \Box \frac {\partial \mathcal L} {\partial (\Box \phi)} = 0\] The equation of motion: \[\Box \phi - \frac 1 2 m^2 + \frac {\lambda} {3!} \phi^3 = 0\] How is it? P.S. As edit LaTex does not work, I add a typo correction here. The equat…

Write down the next-order diagrams for the equation of motion \(\Box h - \lambda h^2 -J =0\). Check the answer using Green's function method.

The question: Show that \[\int_{-\infty}^{\infty} dk^0 \delta (k^2-m^2) \theta (k^0)=\frac 1 {2 \omega_k}\] where \(\theta(x)\) is the unit step function and \(\omega_k \equiv \sqrt {\vec k^2 +m^2}\). My solution: \(k^2={k^0}^2 - \vec k ^2\) \(\omega _k ^2 = \vec k^2 +m^2\) \(k^2 - m^2 = {k^0}^2 - \omega_k^2\) \(dk^0= \frac {d{k^0}^2} {2k^0}\) \(\int_{-\infty}^{\infty} dk^0 \delta (k^2-m^2) \theta (k^0) = \int_{-\infty}^{\infty} \frac {d{k^0}^2} {2k^0} \delta ({k^0}^2 - \omega_k^2) \theta (k^0) = \frac 1 {2 \omega_k} \theta (\omega_k) = \frac 1 {2 \omega_k}\) However, the point of the unit step function there is unclea…

I've arrived to an expected answer, but I am not sure at all that the process was what the problem statement wants. First, I considered \(0=(t+\delta t)^2-(x+vt)^2-(t^2-x^2) \approx 2t \delta t - 2xvt - v^2t^2\). Ignoring \(O(v^2)\) gives \(\delta t=vx\), i.e., \(t \rightarrow t+vx\). Keeping \(O(v^2)\) gives \(t \rightarrow t+vx+\frac 1 2 v^2t\), which is the correct expansion of the full transformation to the second order. Now, taking \(x \rightarrow x+ \delta x, t \rightarrow t+vx\) gives by the similar calculation \(x \rightarrow x+vt+\frac 1 2 v^2x\). Is it what the exercise means?

I thought that you keep on doing attacks untill you give evrey atom its proper valance electrons but according to the reaction in the video I saw I was wrong so can someone please help.

I'am struggling to find videos on youtube that explain how to solve chemical equations with organic compounds in them. What skills do I need to know to awnser thses type of questions. T The assighment summed in a few questions: -pentanoic acid + Na2CO3 -methylethyl propanoate + NaOH. -Butanol + propanoyl chloride -Butyl amine + propanoic anhydride. -2-bromobutane + dilute aqueous sodium hydroxide solution/hot concentrated ethanoic potassium hydroxide solution/excess ammonia -butan-1-ol + H2SO4/K2Cr207/ distilling off the product/ H2SO4 /K2Cr2O7 refluxing/ Tollen's reagent with h…