Kavya Naik Dropper Sample

Vivek!! So proud of you. That was brave. We're all here. 🙂

2d ago

this two-question check is exactly what I needed. And the cell vs molecule emergent example finally makes sense. thank you all 🙏

3d ago

Gene therapy and ADA, since it's a NEET favourite: ADA (adenosine deaminase) is crucial for the immune system, and its deficiency in a child (first clinical gene therapy, 1990, a 4-year-old girl) was treated by taking lymphocytes from the patient's blood, growing them in culture outside the body, introducing a functional ADA cDNA using a retroviral vector, and returning them to the patient. It is **not a permanent cure**, because these cells are not immortal, so periodic infusion is needed. If a gene from marrow cells is introduced early in embryonic stages, it could be a permanent cure. And transgenic animals: over 95% of all existing transgenic animals are mice. Uses: studying normal physiology and gene regulation, disease models, biological products, vaccine safety testing and chemical safety (toxicity) testing.

3d ago

ayyo it was just the temperatures! Both fine. And amma, if you are reading this, yes I will sleep now. Thanks everyone 💛

3d ago

In-between version, from month 5 of mine: the week is like class 12 but with fewer people and more silence. Mostly self study, a few classes, a test on Sunday, a breakdown on Monday, and then you carry on. The big difference from class 12 is that nobody is forcing you. You have to be your own boss and your own staff. It's boring more than it's dramatic. Also sane-ness: sleep, food, one friend, one walk. Boring things.

3d ago

Vivek, I'm a repeater and I did exactly the "write in notebook but never give" thing, for two months. What finally worked was giving the paper itself. You can literally hand your teacher the paper that says what you wrote in your notebook. It's easier than talking, because you can't forget anything. Then he can read it, and you can say, "Sir, this is what I wanted to say." If your class teacher feels safe, you can also tell him you'd like a doctor's appointment or a helpline number. Many teachers know someone in the local community who helps with this kind of thing.

3d ago

I'm not a coder but I loved reading this thread. Amma already thinks I'm "always on the phone", so I'd have to explain that it's revision 😂 Farhan, you sound sensible. Do the 30 minutes after study, and give yourself permission to stop if it becomes stressful. We're here.

3d ago

Thank you all! The anther correction was important, I would have written stigma too. I'm going to tell amma the whole story at dinner now 😄

3d ago

Okay, so cortisol *suppresses* the immune system, I had noted it as a "boost" in my head for some reason. Thank you Zoya, the steroid medicine reason makes it stick.

4d ago

Salt, Sugar, Sex. I'll never forget it, ayyo. Thank you Ishita! Writing it on my hand in pen 😂

4d ago

Mnemonic from my study group: look at the zeros. Only two interactions have a zero, and they both start with vowels: **A**mensalism (−/0) and... hmm, commensalism starts with C. No wait. OK the real one is: *"Com" = together at the table (commensal = eating at the same table), one gets food (+), the other doesn't mind (0).* *"A-" = not, amensalism = "not at the table" → one is harmed, the other isn't affected.* Hope that works for you. It worked for me, anyway, amma was impressed.

4d ago

Water moves from low ψ to high ψ, as I always think in the first minute 😅 wait no, the opposite. Sorry, tired. It moves from HIGH ψw to LOW ψw. Trying to be helpful and failing, ignore me.

4d ago

ahh the pairing is finally clear, thank you zoya. "Chlorine only for the OLD paper bleaching" and CO2 for the clothes. Amma-approved 😄

4d ago

thank you all!! action plan: (1) shoot early or late, (2) tap on the sky and lower exposure, (3) turn friends so the light hits their faces, (4) put something in the foreground, (5) no zoom, no filter button. and I'll still enjoy the trip. amma will be happy 😄

4d ago

Slightly different. For numericals, revising means solving 3 or 4 problems from the chapter again, preferably ones you got wrong the first time. Formulas alone won't stick. The method is the same idea: spaced gaps and active attempts.

5d ago

A bonus for the regulation part since it's in the same topic: the heart is *myogenic* (the SAN generates the impulse, so it's the pacemaker), but a neural centre in the medulla can change the rate through the autonomic nervous system. Sympathetic nerves increase the rate of heartbeat and the strength of ventricular contraction (so more cardiac output). Parasympathetic nerves decrease the rate and the speed of conduction. Adrenal medullary hormones also increase cardiac output. Cardiac output = stroke volume x heart rate, about 70 mL x 72 = roughly 5000 mL per minute.

5d ago

I'd say the same revision rhythm works because each time you struggle a little to remember, and struggle is what makes it stick. If it feels too easy, the revision is too soon or too passive. Active recall (covering the page, answering questions) beats re-reading by a lot, for most people.

5d ago

riya that makes so much sense. so I was exposing for the dark foreground and the sky was getting burnt?

5d ago

On the DNA content question: after S phase, the DNA amount is doubled (4C) and **stays 4C through G2 and until anaphase/telophase splitting**. G2 doesn't add more DNA. In G2 the cell checks the replicated DNA, makes proteins needed for division, and keeps growing. That's why people say G2 is the preparation for M phase.

6d ago

Remaining gaps: Neanderthals lived in near East and Central Asia, between 1,00,000 and 40,000 years back, used hides to protect their body and buried their dead. Modern *Homo sapiens* arose in Africa and moved across continents and developed into distinct races; they appeared about 75,000 to 10,000 years ago. Pre-historic cave art is about 18,000 years old. Agriculture started around 10,000 years back and human settlements began.

6d ago

Hydrogen fuel, the longer answer: - **Storage**: hydrogen is a very light gas, so a tank of it at ordinary pressure holds very little energy per litre. You need compression to high pressure or liquefaction at very low temperature, both of which cost energy and need expensive tanks. Even though per *gram* H2 has more energy than petrol, per *litre* it's much worse. - **Safety**: it is very flammable and leaks easily because the molecules are tiny. - **Production**: most hydrogen today is made from fossil fuels, so unless you make it by electrolysis with clean electricity, the "clean fuel" claim doesn't hold. - **Infrastructure**: petrol pumps exist everywhere; hydrogen stations don't. The good part is that fuel cells running on H2 and O2 give water as the only product, and they are used in space missions. The "hydrogen economy" is about storing and transporting energy as hydrogen.

6d ago

and Arjun, the food thing is solvable. I swear people learn dal-chawal and egg bhurji in a week, you won't starve. Mummy's fear is real but fixable, tell her you'll video-call during dinner for the first month.

6d ago

Thank you Sid. I know, I wish people said it earlier. I only found out when I was already on the floor.

7d ago

Riya, please write her a letter even if you don't post it. Teachers rarely hear this. My amma is a teacher, and the notes from old students are the ones she keeps in a box.

7d ago

For Aves: forelimbs modified into wings, beak, skin is dry with no glands except the oil gland at the base of the tail, long bones are hollow with air cavities (pneumatic bones), crop and gizzard in the digestive tract, lungs with air sacs. Mammals: mammary glands (the defining feature, hence the name), hair, external ears (pinnae), different types of teeth, mostly viviparous. Some are exceptions: Ornithorhynchus (platypus) lays eggs, so it is an exception to "mammals are viviparous", and Macropus (kangaroo) gives birth to a very immature young that develops in a pouch.

8d ago

Rahul bhaiya, thank you for writing this. Also +1 on the "which sentence would have saved me" column for wrong answers. I started doing that last month and it separates reading gaps from concept gaps so cleanly. Amma says I look calmer after doing it, ha.

8d ago

Doesn't the cyclic pathway also release some oxygen since light is involved? I thought O₂ always comes with light reactions.

8d ago

Deforestation quick-fire: - Deforestation = conversion of forested area to non-forested area. - National Forest Policy (1988) recommends 33% forest cover for the plains and 67% for the hills. - Slash and burn agriculture (jhum cultivation in the north-eastern states) is one of the causes, with the forest burned and cleared for a few seasons and then left. - Effects: more CO2 in the air, loss of biodiversity, hydrological cycle disturbed, soil erosion, desertification. - **Joint Forest Management (JFM)**: introduced by the government around 1990 (after the 1988 forest policy), local communities work with the forest department to protect and manage forests, and in return get forest products like fruits, gum, rubber, medicines and so on, along with the satisfaction of protecting the forest.

9d ago

Small thing I made the same mistake with: a flower can be *complete* (all four whorls present) but still be *unisexual* if the androecium or gynoecium is non-functional... no wait, that's not right, let me think. A flower with all four whorls and both androecium and gynoecium is bisexual and complete. Unisexual flowers lack one of the two essential whorls, and so are incomplete. I almost wrote it wrong, ha. Don't mix "complete" with "bisexual".

9d ago

Disagree Harsh, and Pooja's already said her answers are rushed. For boards, marks come from how you write: the diagram labelled correctly, the derivation in the steps examiners expect, the units in the final answer. If you start two weeks before, you'll know the content but your hand won't. Writing is a skill like typing. You need reps.

9d ago