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LIST: MCAT mnemonics and memory aids!

Discussion in 'MCAT Discussions' started by qweewq11, Aug 5, 2002.

  1. qweewq11

    qweewq11 Smiley orgy organizer 7+ Year Member

    Jun 22, 2002
    Planet of the cows
    Mnemonics are essential to survival in med school, and I think they would be useful on the MCAT as well.

    Let's make a list of good MCAT mnemonics to help remember details!

    Some of these may be too detailed but some may actually help us remember something thats always confused us. If it works we should get a good list of mnemonics to be able to print out so we can study the ones we like for the MCAT. Just click "thread tools" at the top of the thread and then "show printable version" :thumbup:

    Some I know off the top of my head:

    CUT Pye: Cytosine, uracil, and thymine are PYramidines.
    Pure As Gold: Guanine and Adenine are Purines.

    Never Let Monkeys Eat Bananas:
    Neutrophils, Lymphocytes, Monocytes, Eosinophils, Basophils

    Maggie May Does Not Smoke: Hardy weinberg requires no:
    (genetic) Drift
    Nonrandom mating

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  3. rCubed

    rCubed taiko master 10+ Year Member

    Jul 14, 2002
    for the hormones secreted by the anterior pituitary gland


    F- FSH
    L- LH
    A- ACTH
    T- TSH

    P- Prolactin
    I - (ignore)
    G- GH
  4. heifetz

    heifetz Member 10+ Year Member

    Jul 14, 2002
    Have at it!


    Anterior Pituitary Hormones

    F: Follicle Stimulating Hormone
    L: Luteinizing Hormone
    A: ACTH
    G: Growth Hormone
    T: Thyroid Stimulating Hormone
    O: MSH - melanOcyte stimulating hormone
    P: Prolactin

    FSH in males
    directly stimulates spermatogenesis - sperm look like "FiSH." In females, FSH obviously stimulates ovarian follicles (which secrete estrogens, which stimulate endometrial proliferation).
    LH in males
    stimulates androgen secretion so males become "Like Hairy Apes" (LH ? A). Androgens also stimulate spermatogenesis, so LH also indirectly stimulates spermatogenesis. In females, LH stimulates the corpus luteum (which secretes estrogens and progesterone, which stimulate the endometrium).

    Autonomic Nervous System

    Sympathetic: fight or flight
    Parasympathetic: rest and digest
    Causes of Deviations from Hardy-Weinberg Equilibrium

    "Maggie May Does Not Smoke"

    Mutations, Migration, genetic Drift, Non-random mating, Selection.
    Cell Cycle

    "Go Sally Go! Make Children!"

    G1, S, G2, M, C
    Growth phase 1, DNA Synthesis (replication), Growth phase 2, Mitosis, Cytokinesis.

    "People Meet And Talk", or

    Prophase, Metaphase, Anaphase, Telophase.

    "PMAT x2"

    Prophase I, Metaphase I, Anaphase I, Telophase I,
    Prophase II, Metaphase II, Anaphase II, Telophase II,
    (Note: 4 haploid daughter cells instead of 2 diploid daughter cells)
    Chordate Features

    "Do Not Pinch People"

    Dorsal, hollow nerve cord
    Pharyngeal slits
    Postanal tail
    Developmental Stages

    "Must Be Good"

    Morula, Blastula, Gastrula
    Fat-soluble Vitamins


    Vitamins A,D,E, and K
    Gastrointestinal Hormones
    (i.e. ones that originate from the GI tract)

    "Garlic Cloves Smell Exquisite"

    Hormone Source Target Triggers Effects
    Gastrin Gastric mucosa Stomach Food in stomach, psychic factors Increased HCl secretion & gastric emptying
    Cholecystokinin (CCK) Duodenal mucosa Gallbladder & pancreas Amino acids, peptides, fatty acids in duodenum Contraction of gallbladder & secretion of pancreatic juice
    Secretin Gastric mucosa Pancreas Acid in duodenum Increased bicarbonate secretion
    Enterogastrone (gastric inhibitory peptide) Duodenal mucosa Stomach Fat digestion products in duodenum Decreases gastric emptying

    Hormones that Increase Blood Glucose


    Somatotropin (growth hormone)
    Thyroid hormones (thyroxine and triiodothyronine)


    IgM, IgA, IgD, IgG, IgE

    "My Poor Friend Picks Apples"

    Monera, Protista, Fungi, Plants, Animals
    Male Reproductive Tract (path of sperm)

    "SEVEN UP"

    Seminiferous tubules
    Vas deferens
    Ejaculatory duct
    Menstrual Cycle

    "FOL(d) M(a)PS"

    Ovarian cycle: Follicular phase, Ovulatory phase, Luteal phase
    Menstrual cycle: Menstrual flow, Proliferative phase, Secretory phase
    The ovarian cycle controls the menstrual cycle. The cycles begin (day 0) when menstrual flow starts. At day 14, the luteal and secretory phases begin and last until day 28, after which the cycles begin again.
    Molecular Genetics

    "EXons EXpressed, INtrons IN the trash"

    DNA expression into mature mRNA
    "CUT the PY"

    Cytosine, Uracil, and Thiamine are PYrimidines (one-ring structures)

    Guanine and Adenine are PURines (two-ring structures)
    "All Tigers Can Growl"

    Adenine bonds to Thymine; Cytosine bonds to Guanine
    Or, "Pure Silver Taxi"

    Purines, A and G, bond to pyrimidines, T and C, respectively
    Oxyhemoglobin Dissociation Curve

    Think of an exercising muscle for a rightward shift:

    Exercising muscle is:

    acidic (lactic acid),
    and has increased 2,3-DPG.

    Exercising muscle benefits from increased oxygen unloading from red blood cells.

    Proteases in the Duodenum

    "Eat Tender Chicken Chunks Elegantly"


    Note: The first enzyme is produced by intestinal mucosal cells, while the others are produced in inactive precursor forms by the pancreas.
    Enterokinase converts trypsinogen into trypsin
    Trypsin converts other trypsinogen molecules into trypsin
    Trypsin converts chymotrypsinogen into chymotrypsin
    Trypsin converts procarboxypeptidase into carboxypeptidase
    Trypsin converts proelastase into elastase
    Scientific Method

    Inductive Reasoning
    "IS GOHH"

    Induction: Specific ? General. Or, Observation ? Hypothesis ? Hypothesis-testing.
    The inductive process proceeds from specific observations to a general hypothesis.

    Deductive Reasoning

    Deduction: General ? Specific
    The deductive process proceeds from a general hypothesis to predictions about specific observations.

    Rate of SeDimentation is proportional to Size and Density

    More precisely,
    terminal velocity of particle ? radius2 x (density - density of medium)

    "Bowel Movement" or "BM"

    A Bacterium is about 1 Micron (1 mm)
    A eukaryotic cell is about 10 times larger (10 mm)
    A virus is about 100 times smaller (0.01 mm)
    Note: these are very, very rough guides. The ranges of sizes are wide.
    Striated Muscle


    Z-line, I-band, A-band, H-zone

    "King Phillip Came Over From Great Spain"

    Kingdom Phylum Class Order Family Genus Species
    Vertebrate Features


    Axial skeleton
    Appendicular skeleton
    Closed circulatory system
    White Blood Cells

    (In order of decreasing numbers.)
    "Nobody Likes My Educational Background"
    N Neutrophils
    L Lymphocytes
    M Monocytes
    E Eosinophils
    B Basophils

    General Chemistry

    H requires 1 more electron in its outer shell to become stable.
    O requires 2.
    N requires 3.
    C requires 4.


    The "t" in cation looks like a plus sign: "ca+ion."

    Reduction occurs at the Cathode; Oxidation at the Anode.

    Remember that the terms beginning with consonants are together, and those beginning with vowels are together.
    "LEO is A GERC (jerk)"

    Loss of Electrons is Oxidation, which occurs at the Anode. Gain of Electrons is Reduction, which occurs at the Cathode.

    "MIT enough"

    Moles deposited at an electrode = It/nF
    Gibb's Free Energy

    "Good Honey Tastes Sweet"

    DG = DH - TDS
    "Gee! Plus Arty! Thank you!"

    DG = DG? + RTlnQ
    "Delicious Grapefruit - Not For Everyone"

    DG? = -nFE?

    Henderson-Hasselbalch Equation

    "HK + AHA"
    or "Hong Kong + American Hospital Association"

    pH = pKa + log10(A-/HA)
    Hydrogen Bonding


    When a hydrogen atom is attached to either a fluorine, oxygen, or nitrogen atom, it can form a hydrogen bond between it and another fluorine, oxygen, or nitrogen atom.
    Nernst Equation

    "We minus Arty (is) enough, thank you."

    E = E? - (RT/nF)lnQ

    If a compound has at least one unpaired electron,
    it is Paramagnetic,
    and will be Pulled toward a magnetic field.

    If not, it is diamagnetic, and is weakly repelled by a magnetic field. There is also a third type of magnetism: ferromagnetism, which is present in what we casually call "magnets," e.g. iron, nickel, cobalt.
    Quantum Numbers

    "National Library (of) Medicine Sizzles"

    n, l, m, s
    l Quantum Numbers

    "Sensual People Do Foreplay"

    s, p, d, f. Then it follows the alphabet: g, h, i, j, k, etc.
    State Functions

    "VG PHEST" (Very Good Festival)

    The following are all state functions:
    V for volume
    G for Gibb's free energy
    P for pressure
    H for enthalpy
    E for internal energy
    S for entropy
    T for temperature

    Organic Chemistry

    Addition of Amine to Carbonyl Group
    "SE PI" (or "SEe PIe")

    Secondary amine ? Enamine
    Primary amine ? Imine
    (Note: tertiary and quaternary amines do not react with the C=0 group.)
    Cis/trans (Geometric) Isomers

    "Z: Zame Zide
    E: Epposite"

    Z for same side and E for opposite sides

    Gauche conformation: It's "gauche" (inappropriate) for one methyl group to stand too close to another group.
    Cyclohexane ring: When you have low energy, you sit down in a "CHAIR" to rest. "BOATS" can be tippy, so they are less stable.


    "SS - ED - CC"

    Isomers of a sugar: If the second lowest -OH is on the Left, the molecule is L.
    If the -OH is on the Right, it's D.
    Meso Compounds

    "MeSo compounds have a Mirror of Symmetry"
    Thus, even though they may have stereogenic centers, they are achiral and so do not have enantiomers.

    Downfield is Deshielded.
    Meta-Directing Groups on a Benezene Ring

    "Queen Elizabeth Second's Navy Commands, Controls, Communicates"
    Q Quaternary amino -NR3+
    E Ester -COOR
    S Sulfonic acid -SO3H
    N Nitro -NO2
    C Carbonyl -CHO
    C Carboxyl -COOH
    C Cyano -CN
    Ortho- and Para- Directing Groups on a Benezene Ring

    "AHA AHA P"
    A Alkyl -R
    H Halogen -X
    A Alkoxyl -OR

    A Amino -NH2, -NHR, -NR2 (not -NR3+)
    H Hydroxyl -OH
    A Amide -NHCOR

    P Phenyl -C6H5

    Types of Reactions

    "SEA MOuRNS CANned PEAs"

    Substitution Electrophilic - Aromatic
    Most Other Reactions - Nucleophilic Substitution
    Carbonyl - Addition Nucleophilic
    Pi bonds - Electrophilic Addition


    Basic Physical Quantities
    "Taking Luxurious Limos More Noxious Than Cycling"

    Temperature (K)
    Length (m)
    Luminous intensity (Cd)
    Mass (kg)
    Number of particles (moles)
    Time (s)
    Charge (C)


    "Quintessential Curriculum Vitae"

    Q = CV

    "England Hails Queen Victoria"

    E (energy stored) = ?QV
    Elastic Modulus


    Elastic modulus = stress / strain
    i.e. "es" / "ai" or "essay"

    Stress is associated with the forss (force) applied.
    Strain is the deformation produced.
    Electromagnetic Spectrum

  5. uffda

    uffda Senior Member 7+ Year Member

    Apr 22, 2002
    SAME DAVE - for spinal cord nerve origins ( I hope I remember the meanings correctly)

    sensory - afferent
    motor - efferent
    dorsal - afferent
    ventral - efferent

    mneumonic curtesy of EK materials
    dr.pearls and RamiroCruzo like this.
  6. Tweetie_bird

    Tweetie_bird 7+ Year Member

    Nov 20, 2001
    I have posted a link in the "Really Good Websites" thread. That link has a bunch of mnemonics that you guys could use. Please also check them out.

  7. phatty925

    phatty925 Senior Member 7+ Year Member

    Apr 23, 2002
    NY, NY
    not sure if this one has been mentioned yet, but ADH: always digging holes. this is an easy way to remember that antidieuretic hormone allows reabsorption of water from kidneys, therby concentrating the urine.
    caffeine and alcohol are ADH blockers
    dr.pearls, House D.O. and BlueArc like this.
  8. Sonya

    Sonya Senior Member 10+ Year Member

    Aug 12, 2001
    WOW!! thanks. :eek: :eek: :D

    LEO the lion GERsss

    Lose Electrons = Ozidize

    Gain Electrons = Reduce

    AN Ox and a RED CAT

    Anode is site of Oxidation; cathode is site of Reduction.
  9. ac47

    ac47 Member 7+ Year Member

    Mar 23, 2003
    i usually spend 2-3 hours a night on mcat material, but when it comes to taking practice tests i draw blanks. i usually miss questions because of misinterpreting graphs or diagrams on the BS section. any good advice for resolving these types of problems?

    also does anyone have any good mnemonics they use for PS equations. i memorize all the equations, but i'm not getting the hang of when to use the right one. i usually use an equation that seems right, and i come up with an answer that looks appropriate, but i use the wrong equation and therefore the answer is wrong.

    any helpful advice is appriciated,

  10. maiko82

    maiko82 Member 7+ Year Member

    Dec 17, 2002
    PS meaning "physical sciences"?

    This one from my old chem teacher is kind of silly, but I've never forgotten it.

    MM of a gas is what a dog does outdoors. "Dirt over pee," or
    MM=dRT/P (d=density, R=ideal gas constant, T=temp, P=pressure)

    Yeah, awful. I'll post some better ones when I can think of them.
    dr.pearls and MurphyCats like this.
  11. maiko82

    maiko82 Member 7+ Year Member

    Dec 17, 2002
    as to when to use which formula, the only thing that has really helped me is to practice extensively. good luck!
  12. ac47

    ac47 Member 7+ Year Member

    Mar 23, 2003
    that was a great one. that was one that i kept flipping around, but after that mnemonic i'll never forget.

  13. LoneCoyote

    LoneCoyote 7+ Year Member

    Sep 13, 2002
  14. spumoni620

    spumoni620 .:good girl down:. 10+ Year Member

    Apr 18, 2003
    At the starting line

    One word. WOW. :eek: still reeling in shock.

    Only one change to the SAME DAVE mnemonic : Dorsal, not distal.

    Sensory-Afferent (i.e. sensory neurons are afferent)
    Motor-Efferent (motor neurons are efferent)

    Dorsal-Afferent (i.e. dorsal, sensory afferent neurons enter the CNS dorsally)
    Ventral-Efferent (i.e. motor neurons exit the CNS ventrally)

    parasympathetic preganglionic neurons are LONG. Remember this by using "para long pre"

    A couple of more for O-chem that I got from Examkrackers:

    HAL = basic amino acids (Histidine, Arginine, Lysine); courtesy of examkrackers...

    Nonpolar (hydrophobic) amino acids:
    I saw (ISO) LEUcy METHodically PRObe and PHEel ALAN and then VAL TRYPped on the GLYCINE

    (This would be Isoleucine, Leucine, Methionine, Proline, Phenylalanine, Alanine, Valine, Tryptophan, Glycine)

    Actions of some hormones:
    INsuline makes glucose go INto the cell.
    GlucaGON makes glucose GONE from the cell.
    CalciTONin TONES down calcium concentrations in the blood.

    And I thought I had one for the muscle fibers but I just forgot it so I'll post it after I finish re-reviewing that part.

    Good luck, everyone! :) Almost (yikes!) there!
  15. ucdbiochem

    ucdbiochem Senior Member 7+ Year Member

    Aug 4, 2002
    I Pick My A$$ Today
    ( Interphase, Prophase, Metaphase, Anaphase, Telophase)

    U Go Away, U Are Away, U Are Gone!
    (UGA, UAA, UAG for stop codons)
  16. spumoni620

    spumoni620 .:good girl down:. 10+ Year Member

    Apr 18, 2003
    At the starting line
    Does anyone have a trick for keeping the boiling points and melting points straight? For ex: cis vs. trans, branching vs. unbranching, order of boiling for alcohols, ketones, carb acids, esters, etc. etc....

    i know cis alkenes boil higher and melt lower (??) than trans, but the branching and stuff always messes me up.

    Thanks a bunch!
  17. spumoni620

    spumoni620 .:good girl down:. 10+ Year Member

    Apr 18, 2003
    At the starting line
    bump (kinda desperate here!!!)
  18. DrHuang

    DrHuang SDN Donor 10+ Year Member

    Jan 9, 2003
    Amino Acids...


    'God Always Vants Little Insects'


    Glycine, ALanine, Valine, Leucine, Isoleucine

    and then i just memorize Tryptophan, Proline, Methione, and Phenalaline

    GCATS (like the mcats...but with a G!) GA LAH

    Glutamine, Cysterine, Asparagine, Theronine, Serine

    Acidic: Gulatamic Acid, Aspartic Acid

    Basic: Lysine, Arginine, Histidine

    its lame, i know, but it helps me...and ga lah is like a chinese word 'ga lah ma' which means too talkative and full of **** so thats why i made it ga lah.

    and for glucose, its **** glucose...make a middle finger and where ur finger is pointing is where the OHs are

    anyways, good luck on sat guys...i hate verbal!!!
  19. Sonya

    Sonya Senior Member 10+ Year Member

    Aug 12, 2001
    Histidine is an acidic amino acid.... per Berkely preview. Pka of R group was around 6.... correct me if you're sure that's wrong. (I looked it up after reading that post)
  20. Ryan

    Ryan Pretend This Is Witty 10+ Year Member

    Nov 8, 2001
    Allentown PA
    Must be a misprint if ya think about it. AA are defined as acidic or basic at a ph=7. So if His has a pKa of 6 that means at pH 7 one mol of His will have MORE than half of it H's missing (its gonna attract free hydrogens)...so His is indeed a basic aa by the common definition. Also my biochem book tells me so. :laugh:
    --Hope this clears things up--
  21. Sonya

    Sonya Senior Member 10+ Year Member

    Aug 12, 2001
    don't follow. glutamic acid and aspartic acid are acidic amino acids... right? And there Pka is around 4, because the R group has a carboxyl. so, if the pka is less then 7 it should be considered acidic....

    What i think the thing is is that glutamate is basic, while glutamic acid is acidic... same way the deprotoanated histidine is basic, and the protonated (on R group is acidic)... I think i'll study in some biochem book though. The review book only said pka was 6, i concluded that meant acidic.

    ryan... that logic doesn't exactly sond right. Anyway, i'm gonna study it while doing my last review, since your book apparently says it's "basic".
  22. Ryan

    Ryan Pretend This Is Witty 10+ Year Member

    Nov 8, 2001
    Allentown PA
    Sorry Sonya,
    I was pretty tired, as I am now, and typing fast. Your right, what I wrote and what I meant to say were two totally separate things! I neglected to clarify that His IS about 10% protonated (thus "over half" is deprotonated) at pH 7 because a pka=6.0 is SOOOOO close to 7. As you said, Aspartic and Glutamic aa's have pKa's of about 4. (note that these are logarithmic functions so the difference between 6&7 in MUCH smaller than 4&7) Thus by 'the time' one brings up the pH of a solution to 7, all the Asp and Glu are in the COO- form and virtually none in the protonated form. Therefore they cannot act as bases. However, at pH=7 His can still act as a base. Hopefully that made a little sense. Although I'm to tired and lazy to proof read at this point (I've got a 6mo baby boy, a full time job, a wife in a masters degree program to support, 10+ hours of virology research per week and go to school full-time on top of taking the MCAT yesterday). Please have some sympathy for my lack of logic on 2hrs of sleep that I got at my desk while waiting for a PCR reaction to complete. I am glad you caught my mistake and were going to look up in a biochem book that His is indeed a basic aa before the MCATs. I hope everyone in the SDN gang did well on the MCATs!! I actually got some VERY nice sleep before the big day, I feel great about how I did. Hope ya'll feel the same.

  23. princessd3

    princessd3 Senior Member 7+ Year Member

    Jul 28, 2002
    New York
    Thought this might be helpful...So BUMP!
  24. Cerberus

    Cerberus Heroic Necromancer Physician 10+ Year Member

    Dec 13, 2001
    Geez, I think a lot of this is way more detailed than you need for the MCAT. I mean, some of it is certainly useful but I think if you are focusing too much on this stuff, you are misfocusing your energy.

    Anyhow, thanks for the bump because there are a few things on there that i find useful.
    Avicenna and House D.O. like this.
  25. UCLAstudent

    UCLAstudent I'm a luck dragon! 10+ Year Member

    Sep 6, 2002
    I agree with Cerb... but some of it's useful.
  26. CanIMakeIt

    CanIMakeIt Fellow 10+ Year Member

    Oct 8, 2003
    right on....i guess more stuff to learn now :(
  27. OnMyWayThere

    OnMyWayThere OMS-III 10+ Year Member

  28. fun8stuff

    fun8stuff *hiding from patients* 10+ Year Member

    Apr 9, 2003
    Do people actually memorize all these sayings? lol... I think I would find it harder to keep all of these sayings straight than to actually learn the material...
    RaspberrySlushy and House D.O. like this.
  29. princessd3

    princessd3 Senior Member 7+ Year Member

    Jul 28, 2002
    New York
    lol same thing I said. It's extra work just remembering the sayings. Nevertheless, I thought it interesting.
  30. Cerberus

    Cerberus Heroic Necromancer Physician 10+ Year Member

    Dec 13, 2001
    It would be useful if there was one for molecular geometry - i always get my trigonals and shiz confused.
  31. CH3CH2OH

    CH3CH2OH born to be wild-type 7+ Year Member

    May 25, 2003
    in the (cDNA) library
    actually, make it FLAT PEG

    and add E for Endorphins (according to the kaplan book)

  32. CanIMakeIt

    CanIMakeIt Fellow 10+ Year Member

    Oct 8, 2003
  33. Sofee

    Sofee Member 7+ Year Member

    Sep 23, 2003
    Chicago, IL
    bump...i think this will be useful for all the August MCATers. GOOD LUCK EVERYONE!!
  34. chopper

    chopper Senior Member 7+ Year Member

    Apr 18, 2004
    I'm with Cerb on this one. You are going to quickly enter the law of diminishing returns with these, and end up wasting all your time just memorizing mnemonics. Some are VERY good to know (CUT the PYE, Pure as Gold, FLAT PIG) - but most of these are WAY too detailed for what you need to know for the MCAT.

    A mnemonic for STOP codons? Please - IF you get a question like this on the MCAT, they WILL tell you what they are. You are just wasting brain cells on things like that.

    Good luck in August.
  35. txguy

    txguy ... 10+ Year Member

    Apr 18, 2004
    refer to screen name
    Instead of a mnemonic for Pyrimidines and Purines just remember that the pyrimidines both have a "Y" in the name, cytostine (sp?) and thymine. And the purines do not, adenine and guanine. (yes, this doesn't work for uracil, a pyrimidine, but thats not so hard to remember!)

    Also, and this may be too detailed, but pyrimidine is a long name to describe a small molecule (1 ring). And purine is a small name to describe a large molecule (2 rings).

  36. whournameiz

    whournameiz Senior Member 7+ Year Member

    Feb 19, 2004
    Anyone know an easy way to remember what the ectoderm, endoderm and mesoderm become??

    RaspberrySlushy likes this.
  37. OTheHorror

    OTheHorror Senior Member 7+ Year Member

    Oct 29, 2003
    MAWT = Mnemonics Are a Waste of Time

    Seriously, every seasoned MCAT taker knows that mnemonics are, for the most part, a waste of time. Hours and hours of studying mnemonics might amount to one question of so...time should be spent learning the basic concepts of/practicing your weaker areas.

    If I remember correctly, OIL RIG is useful...that's about it...
  38. MoosePilot

    MoosePilot Y Bombardier 7+ Year Member

    May 26, 2004
    The order of electronegativity for certain elements:
    (I can remember this partly because one of the officials in OK had a name like Brisch)

    Phone Call (from) Brisch

    F > O > N > Cl > Br > I > S > C > H

    more electronegative --------> less

    Some of my classmates used a different word for Brisch, but it wasn't as smooth.
  39. OTheHorror

    OTheHorror Senior Member 7+ Year Member

    Oct 29, 2003
    better yet...just remember Angels and Gods are pure...(A & G are purines)

    booyah! trumped you!

    Wait a second...MNEMONICS ARE USELESS, tards...
  40. OTheHorror

    OTheHorror Senior Member 7+ Year Member

    Oct 29, 2003
    or you could just understand the periodic table and TURN TO IT IN THE BOOKLET...
  41. MoosePilot

    MoosePilot Y Bombardier 7+ Year Member

    May 26, 2004
    LOL - that's great. Now turn to the periodic table and show me how you could get exactly that info? The crude electronegativity is in the periodic table, but if there's an easy way to tell that N is more electronegative than Cl from the periodic chart, I don't know it.

    I did know the periodic trends, but knowing electronegativity specifics can pay off on some questions.
  42. whournameiz

    whournameiz Senior Member 7+ Year Member

    Feb 19, 2004
    endoderm mesoderm anyone? i'll take anything .. :scared:
  43. JohnHolmes

    JohnHolmes Large Member 7+ Year Member

    Dec 29, 2003
    Ectoderm = "attractoderm" anything that attracts you to someone else ... lens of eye (eyes), nervous system (personality), skin, etc.

    Mesoderm = "meanstoderm" anything that it takes to do something or go somewhere. Bladder (gotta GO pee), musculoskeletal system, cardiovascular system (running and moving), tendons etc (to pull against), etc

    Endoderm: What is inside, lining of digestive system, etc.


    EPA (environmental protection agency) E lectrolytic (galvanic) P ositive A node

    Remember Galvanic cells ARE electrolytic cells (synonyms) and the ANODE IS NEGATIVE IN THE OTHER CELL TYPE (non electrolytic)

    Cathode and Reduce both have "C" in them .... (so anodes ALWAYS oxidize).


    Right Hand Rule (learn to love this one, BIG TIME)


    Oil Rig (oxidation is loss [of electrons], Reduction is Gain)

    Another way to remember this same thing is to look at the CHARGE above the atom.

    Ag (in ground state, the CHARGE is 0) --> Ag+ (this has been OXIDIZED) since the number above Ag has increased.

    Cu3+ --> Cu2+ (this has been REDUCED sinced the number above it is REDUCED [went down]

    Cl --> Cl- (this is also REDUCED [went from 0 --> -1]

    If you remember this, you need NOT remember OIL RIG or LEO says GER

    Hope that helps.
  44. omar06

    omar06 Member 7+ Year Member

    Dec 14, 2003
    I just learned this today...for the nervous system and how they have the sympathetic and parasympathetic division...when sex organs are involved

    Sympathetic = ejaculate, orgasm

    Parasympathetic = erection

    Point and Shoot
    pizza1994 and SwedishMD2B like this.
  45. aye

    aye Senior Member 7+ Year Member

    May 30, 2002
    the best one of all... you won't forget it...

    CMEN... :laugh:

    connective, muscle, epithelial, nervous

    the bases:
    *just like someone else said, cytosine and thymine have 'y' for pYrimidine
    *PUrine has TWO rings... it rhymes
    *AT and GC bind to each other since AT are both straight and GC are both curved. 3 is also curved which shows the # of h bonds on GC.
  46. tutankh

    tutankh 7+ Year Member

    Jun 15, 2004
    King Philip Came Over For Great Soup!


    PUGA 2

    Purines ---> Guanine/Adenine--2 rings
  47. bloHaZaRd

    bloHaZaRd Unbanned 7+ Year Member

    Nov 4, 2003
    Chicago, IL
    bumpty bumpati *bump* :D
  48. princessd3

    princessd3 Senior Member 7+ Year Member

    Jul 28, 2002
    New York
  49. Pembleton

    Pembleton Senior Member 10+ Year Member

    Jun 30, 2002
    Longitudinal waves move parallel to the source. I think of the the two l's at the end of the word 'longitudinal' as the symbol for parallel lines.

    Transverse waves move perpendicular to the source. I think of a capital 'T' as being an upside down perpendicular symbol.
    reinesupreme and pizza1994 like this.
  50. tank you

    tank you 2K Member 5+ Year Member

    Jul 19, 2004
    I made this one up and it really helps me to remember the periodic trends.

    Electronegativity, Electron Affinity, Energy of Ionization Encreases going up and to the right on the periodic table.

    The only one that goes the opposite way (left and down on the periodic table) is atomic radius.

    Hope this helps! :)
  51. myry

    myry countdown 7+ Year Member

    Jul 18, 2003

    Thanks for the insights. I was confused about mesoderm. I've always respected your comments, but I find myself questioning what you said about cells. I thought voltaic=galvanic and the anode here is neg, whereas the electrolytic cell has a positive anode. :confused:
    RaspberrySlushy likes this.

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