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Homework Help

For assistance with (but not answers to) homework problems.

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A simple reminder to all: this is the "Homework Help" forum, not the "Homework Answers" forum. We will not do your work for you, only point you in the right direction. Posts that do give the answers may be removed.

  1. Hello guys, can you help me with my homework? We've got topic - Photosynthesis and pentose pathway. Here it is: "You have 3 kinds of bacteria: one is an optional anaerobic organism and gets energy from fermentation, the other gets energy from glucose oxidation using citrate cycle and oxidative phosphorylation, and the third from photosynthesis. All three are able to consume glucose. It happened to you that these three tribes mixed up. How could you differentiate between different growth conditions which strain is which?" We should create a table summarizing the cultivation conditions and determine which species is which. Guys, can you help ?? 😊 Thanks a lot…

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  2. Started by Om_IPO,

    Hi science master 👩‍🏫 I have 3 questions and this is not homework at all. Btw im 29 and im totally blind about physics and math. Well, my interest about math and physics has grown big lately. So these are my questions : 1. Is it possible to build small atomic bomb till i can carry on my pocket with current technology? Pls explain how come its possible or not 2. If u want to bombing a monument into the last pieces, let say Washington monument, where will u detonate the bomb? Will u detonate the bomb underneath at the museum or at the top? *Btw this is not bombing plan at all, seriously ✌️ 3. What should i study for basic in physics and math? Let say un…

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  3. Started by tonit,

    hi! i'm color blind to shades of red and green, need help identifying this gram-stain bacteria for a school lab report https://imgur.com/a/WBcnCXi

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  4. Started by ErinE,

    I'm so lost with my unknown. Please help! My 3 sugar test came back yellow with no gas. My Citrate test came back still green. What could my unknown be?

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  5. There is a 3×3 dot grid. The distance between one point to another is 1. How many different non-congruent polygons can you make on the grid? Rules: All vertices of the polygon must be on the grid Only non self intersecting polygons Only polygons with non-empty interior (<=> positive area) The area of each polygon is 2 At least one side of the polygon is 1.5 or bigger please help me!

  6. Does anyone know what the little red piece is on my classroom's life size human skeleton model is?

  7. Started by student_lfcs,

    Spoiler

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  8. I just need a clear fact and clarification(s) about this. During the crossing out process of AS and AC....the resulting crosses are AA AS AC CS. My question mainly is how dangerous is the CS genotype and how can it be managed?

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  9. Started by oliveajah,

    "In order to determine the aspirin content of a commercial aspirin tablet, a tablet weighing 0.400g was dissolved in aqueous ethanol and titrated with 0.100M NaOH solution: 16.7cm^3 of the NaOH was required to reach the end point. Under the conditions of the titration, only the Carboxylic acid group reacts with the NaOH". Obviously, the question goes on to ask about moles in the aspirin, and the % by mass of aspirin in the tablet, but what I need to know is what is the balanced equation for this reaction? thanks before.

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  10. Started by Johan Garcia,

    Can someone help me understand what this is saying, 555 666 888 33 6 33 can you please help me is very important

  11. Started by druS,

    Fist year biology assignment. It isn't really about the topic itself but about: experience with literature search Scientific writing and referencing Must include 3 references to peer reviewed journals Technically correct scientific terminology The topic is Cas-9, I have chosen agriculture. The assignment needs to provide a background to gene editing, outline of Cas-9, outline of beneficial work, then ethical considerations. I can post the whole assignment if needed. For now my challenge is fine tuning database search between information overload to nothing when I want specifics. I'm doing fine getting an overview of the topic so far, b…

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  12. 1 1. P v Q A |- R & S A--> ASSUMPTION PA--> PROVISIONAL ASSUMPTION 2 2. R A 4 3. P--> S A 5 4. Q--> S A 3,5 5. P P 3,5 6. S …

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  13. Started by mrgreen,

    Hello, this Semester I have my first QFT class and we have a homework where I got stuck at the beginning. I have some ideas but I am not sure if they are correct, We have to assume the SM with two Generations. Now we extend the gauge group of SM with SU(2)H X SU(3)D and introduce new SM-neutral right handed fermion which is a doublet under SU(2)H and a triplet under SU(3)D and two left handed fermions which are singlets under SU(2)H and triplets under SU(3)D . Now we have to consider the gauge anomalies in this SM Extension and have to assign the charges so that we keep the cancellation of this anomlies. (There are soe more parts to do but I want to…

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  14. A body jumps with initial speed 10m/s under a 30 degree angle with the horizon. Air resistence shouldn't be taken into account and g=10m/s2. What will the tangential acceleration be after 0.5 seconds??

  15. Started by Gymnasiearbete,

    We're doing a project in school where we will test Bisphenol A on organisms and see how they affect their reproductive ability, but we do not know which animal we should test on. They must reproduce quickly and it must have a reproduction similar to that of humans, so it cannot be bacteria. It must not be vertebrate or fish because then we must seek permission to test on them. Does anyone have a suggestion on what organism we can test it on?

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  16. Started by Grace Donkoh,

    🙏

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  17. Started by harveyharry,

    How to predict coordination numbers of transition metals? For example how many NH3 molecules will form dative bonds with an Ag ion?

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  18. Started by harveyharry,

    How can you predict the oxidation states of transition metals? For example what would be the oxidation state of iron left exposed to air.

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  19. Started by h.shahbodaghkhan,

    Imagine the disappearance of chlorophyll in the leaves of the trees and the absence of trichomes, each caused by recessive mutations at three different sites A, B and C in Arabidopsis. Given the triple mutation and assuming that the mutant sites are on one chromosome, How can we explain that we can arrange the mutant sites relative to each other on the chromosome?

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  20. Started by Ville502,

    What is the formula for "second"?

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  21. Started by Josephine.E,

    Hello everyone, I am studying at a University in Mexico and I am making an essay about how to cure cancer throughout the use of biomimicry (to look or search inspiration inside nature for solutions to human problems). My question is if it is possible to implement the use of vasoconstriction to cure this type of cancer.

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  22. Started by Georgiy,

    Can someone help me with solving this question. Find the slope of points(2,2) and (3,5) please as I don't really get it please

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  23. for my science project I’m testing pepsin, so I need somehow get HCl = 2pH. I know there is way from concentration calculate pH, but I don’t know how. Maybe someone can send me some examples, how to calculate that or explaine or send the link with explanation. Also maybe someone can send me conspects or articles abouot pepsin and digestion, proteins appreciate any help.

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  24. Started by Clement,

    Solve for x in the below: x2 = 16x Systematic procedure required if possible, please.

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  25. A power-law fluid, or the Ostwald–de Waele relationship, is a type of generalized Newtonian fluid (time independent Non-Newtonian fluid) for which the shear stress, τ, is given by τ = A(du/dy)n + B Where A, B and n are constants that depend upon the type of fluid and conditions imposed on the flow. Comment on the value of these constants so that the fluid may behave as: I) an ideal fluid II) a Newtonian fluid III)a non-Newtonian fluid

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