topic 1 of 7 · Biology
Open an anther and there are four sacs inside
Structure of anther and pollen sacs
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topic 2 of 7 · Biology
Four walls around the pollen, each doing one job
Microsporangium wall layers
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topic 3 of 7 · Biology
Pollen survives fossilisation. Its outer coat is why.
Pollen grain structure (exine & intine)
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topic 4 of 7 · Biology
One cell divides and becomes four pollen grains
Microsporogenesis
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topic 5 of 7 · Biology
Seven cells, eight nuclei, and one of them matters most
Female gametophyte formation (embryo sac)
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topic 6 of 7 · Biology
A flower can pollinate itself. Most try hard not to.
Pollination types (self, cross, geitonogamy)
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topic 7 of 7 · Biology
Plants evolved tricks to avoid their own pollen
Outbreeding devices
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topic 1 of 7 · Biotechnology
Two recipes, one dish. DNA from different species, joined.
Recombinant DNA (rDNA)
stitching DNA from different sources like mixing two recipes into one dish
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topic 2 of 7 · Biotechnology
Copying one useful gene, endlessly
Gene Cloning
making endless copies of a useful gene, like photocopying notes before boards
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topic 3 of 7 · Biotechnology
The afternoon someone first remixed a living thing
Cohen–Boyer Experiment
the moment scientists first “remixed” life in a lab
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topic 4 of 7 · Biotechnology
Scissors that cut DNA at one exact sequence, every time
Restriction Enzymes
molecular scissors that cut DNA at exact spots
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topic 5 of 7 · Biotechnology
The glue that seals a cut in DNA
DNA Ligase
the glue that seals DNA fragments together
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topic 6 of 7 · Biotechnology
A circle of DNA that works as a delivery truck
Plasmids
tiny circular DNA rings acting like delivery trucks inside bacteria
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topic 7 of 7 · Biotechnology
A jagged cut joins easily. A clean cut struggles.
Sticky Ends vs Blunt Ends
jagged vs clean cuts that decide how DNA pieces join
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topic 1 of 7 · English
The day the lesson mattered was the day it ended
The Last Lesson
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topic 2 of 7 · English
He dreaded the class. Then he wanted it to go on.
Franz’s Fear to Realisation
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topic 3 of 7 · English
He could not finish the sentence, so he wrote it
M. Hamel’s Last Gesture
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topic 4 of 7 · English
Lose the language and something else goes with it
Language as Identity
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topic 5 of 7 · English
You notice what it was worth once it is gone
Role of Regret in Learning
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topic 6 of 7 · English
Children sorting rubbish at dawn, and calling it work
Lost Spring
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topic 7 of 7 · English
His name means lord of the universe. He is barefoot.
Irony of Saheb’s Name
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topic 1 of 7 · Physics
Rub a comb on your hair and it picks up paper
Properties of Electric Charge
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topic 2 of 7 · Physics
Double the distance and the force drops to a quarter
Coulomb’s Law
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topic 3 of 7 · Physics
Three charges. Add the forces one pair at a time.
Superposition Principle
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topic 4 of 7 · Physics
The charge is not touching anything. It still pushes.
Electric Field Concept
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topic 5 of 7 · Physics
Lines nobody can see, drawn to make a force visible
Electric Field Lines
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topic 6 of 7 · Physics
Two equal charges, opposite signs, a small gap
Electric Dipole
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topic 7 of 7 · Physics
It does not move. It turns.
Dipole in Uniform Field
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topic 1 of 7 · Chemistry
Salt vanishes into water and changes everything about it
What Makes a Solution “Disappear”
how salt vanishes into water yet changes everything about it
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topic 2 of 7 · Chemistry
Oil refuses water, then mixes happily with grease
Like Dissolves Like
why oil refuses water but mixes easily with grease
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topic 3 of 7 · Chemistry
How much is actually dissolved in there?
Ways to Measure Concentration
how chemists keep track of “how much is dissolved”
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topic 4 of 7 · Chemistry
One changes with temperature. One does not.
Molarity vs Molality
why temperature secretly matters in one but not the other
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topic 5 of 7 · Chemistry
Add salt and the liquid becomes less eager to leave
Vapour Pressure Lowering
why adding solute makes liquids less eager to escape
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topic 6 of 7 · Chemistry
Each part contributes, in proportion. Mostly.
Raoult’s Law
how each component quietly contributes to total vapour pressure
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topic 7 of 7 · Chemistry
Some mixtures behave. Some do not. There is a reason.
Ideal vs Non-Ideal Solutions
when mixtures behave politely… and when they don’t
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topic 1 of 7 · Psychology
Same room, same lesson, two completely different students
Individual Differences
why two classmates in the same room still think, feel, and react so differently
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topic 2 of 7 · Psychology
You behave differently at home. The room is doing it.
Situationism
when the situation quietly controls behavior more than personality does
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topic 3 of 7 · Psychology
Invisible traits deciding how you study and decide
Psychological Attributes
the invisible traits shaping how you study, react, and decide
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topic 4 of 7 · Psychology
A test treats every answer the same way. Is that fair?
Formal Assessment
that structured test setting where every answer counts the same way
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topic 5 of 7 · Psychology
The teacher who knows your strengths without testing
Informal Assessment
the teacher who “just knows” your strengths without a test
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topic 6 of 7 · Psychology
One hidden ability behind everything you think?
Spearman’s g-Factor
the idea that one hidden ability powers all your thinking
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topic 7 of 7 · Psychology
Good at maths, lost in poetry. The same brain.
Specific Abilities (s-factors)
why you might ace math but struggle with poetry
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topic 3 · 78 secondsPollen grain structure (exine & intine)
no film for this one yet1 of Biology's 7 topics play a film here. Ask this one a question instead — the panel at the bottom.
topic 3 · 84 secondsCohen–Boyer Experiment
no film for this one yet1 of Biotechnology's 7 topics play a film here. Ask this one a question instead — the panel at the bottom.
topic 3 · 73 secondsM. Hamel’s Last Gesture
no film for this one yet1 of English's 7 topics play a film here. Ask this one a question instead — the panel at the bottom.
topic 3 · 75 secondsSuperposition Principle
no film for this one yet1 of Physics's 7 topics play a film here. Ask this one a question instead — the panel at the bottom.
no film for this one yet0 of Chemistry's 7 topics play a film here. Ask this one a question instead — the panel at the bottom.
no film for this one yet0 of Psychology's 7 topics play a film here. Ask this one a question instead — the panel at the bottom.
Biology · topic 1
What are the two primary components of a flower's stamen?
The filament (stalk) and the anther (tip).
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Biology · topic 2
How many chambers, or microsporangia, are typically visible in a cross-section of a hibiscus anther?
There are four chambers.
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Biology · topic 3
పరాగ రేణువు (Pollen grain) యొక్క వెలుపలి గట్టి పొరను ఏమంటారు?
ఎక్సైన్ (Exine)
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Biology · topic 1
What is the specific function of the anther in a flowering plant?
It produces and releases pollen grains.
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Biology · topic 2
The outermost protective skin of the microsporangium is called the _____.
epidermis
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Biology · topic 3
పరాగ రేణువు యొక్క లోపలి, పలుచని పొరను ఏమని పిలుస్తారు?
ఇంటైన్ (Intine)
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Biology · topic 1
Most angiosperm anthers are described as _____, meaning they possess two distinct lobes.
Bilobed
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Biology · topic 2
What is the primary function of the epidermis in a microsporangium?
It provides protection against dehydration, mechanical injury, and pathogens.
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Biotechnology · topic 1
What is the definition of recombinant DNA (rDNA) technology?
The deliberate joining together of DNA molecules from different origins to create sequences that do not exist in nature.
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Biotechnology · topic 2
What is the primary objective of gene cloning?
To produce unlimited, identical copies of a specific, useful gene.
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Biotechnology · topic 3
In what year did the Cohen–Boyer experiment prove that gene cloning was a practical reality rather than just a theory?
The Cohen–Boyer experiment took place in 1973.
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Biotechnology · topic 1
Why is it possible to join DNA from completely unrelated species, such as a human and a bacterium?
Because the chemical language of DNA is universal across all living organisms.
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Biotechnology · topic 2
In gene cloning, the specific organism used to replicate the gene is known as the _____.
host cell
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Biotechnology · topic 3
Who were the two primary scientists responsible for the first successful recombinant DNA experiment in 1973?
The scientists were Stanley Cohen, a geneticist, and Herbert Boyer, a biochemist.
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Biotechnology · topic 1
Identify the four nitrogenous bases that make up the universal "alphabet" of DNA.
The four bases are $A$ (adenine), $T$ (thymine), $C$ (cytosine), and $G$ (guanine).
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Biotechnology · topic 2
The process of making a host cell take up recombinant DNA is called _____.
transformation
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English · topic 1
In what specific French region is the story "The Last Lesson" set?
Alsace
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English · topic 2
Where does Franz's fear first manifest physically at the start of the story?
In the small space between his chest and his throat.
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English · topic 3
What specific phrase does M. Hamel write on the blackboard as his final gesture?
Vive La France!
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English · topic 1
Which two French districts were annexed by Prussia after the Franco-Prussian War?
Alsace and Lorraine
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English · topic 2
What external activities distract Franz from going to school at the beginning of the lesson?
The warm sunlight, birds chirping, and Prussian soldiers drilling.
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English · topic 3
In the context of the last lesson, how does the role of the blackboard change?
It transforms from a surface for grammar into a monument.
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English · topic 1
What language was mandated to be taught in the schools of Alsace after the Prussian takeover?
German
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English · topic 2
In the context of the story, what does the bulletin board represent to the townspeople?
A map of fear and a source of collective anxiety.
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Physics · topic 1
Which particles are identified in the text as always carrying a negative charge?
Electrons
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Physics · topic 2
What fundamental law describes the magnitude and direction of the electric force between two stationary point charges?
Coulomb’s Law
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Physics · topic 3
బహుళ ఆవేశాలు ఉన్నప్పుడు ఒక నిర్దిష్ట ఆవేశంపై పనిచేసే నికర విద్యుత్ బలాన్ని కనుగొనడానికి ఏ నియమాన్ని ఉపయోగిస్తారు?
సూపర్ పొజిషన్ నియమం (Superposition Principle).
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Physics · topic 7
What is the physical composition of an electric dipole?
Two equal but opposite charges separated by a short distance.
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Physics · topic 1
Which particles are identified in the text as always carrying a positive charge?
Protons
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Physics · topic 2
According to Coulomb's Law, the electric force between two point charges acts along what specific path?
The straight line joining the two charges.
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Physics · topic 3
సూపర్ పొజిషన్ నియమం ప్రకారం, నికర బలం అనేది విడివిడి బలాల యొక్క ఏ రకమైన మొత్తం?
వెక్టార్ మొత్తం (Vector sum).
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Physics · topic 7
In what direction does the electric dipole moment vector point?
From the negative charge to the positive charge.
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Chemistry · topic 1
What is the scientific definition of a solution?
A homogeneous mixture of two or more substances at the molecular or ionic level.
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Chemistry · topic 2
"సమాన స్వభావాన్ని కలిగినవి ఒకదానిలో ఒకటి కరుగుతాయి" (Like dissolves like) అనే నియమం దేనిపై ఆధారపడి ఉంటుంది?
అణువుల మధ్య ఉండే ఆకర్షణ బలాల అనుకూలత (Molecular compatibility) పై ఆధారపడి ఉంటుంది.
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Chemistry · topic 6
బాష్పశీలత (Volatility) అంటే ఏమిటి?
ఒక ద్రవం ఆవిరిగా మారి తప్పించుకోవడానికి చూపే ప్రవృత్తిని బాష్పశీలత అంటారు.
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Chemistry · topic 1
In a solution, what is the term for the substance that is dissolved?
Solute.
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Chemistry · topic 2
నీటి అణువు ($H_{2}O$) ఎందుకు ధ్రువణ స్వభావాన్ని (polar) కలిగి ఉంటుంది?
ఆక్సిజన్ పాక్షిక రుణ ఆవేశాన్ని, హైడ్రోజన్ పాక్షిక ధన ఆవేశాన్ని కలిగి ఉండటం వల్ల.
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Chemistry · topic 6
రౌల్ట్ నియమం (Raoult’s Law) ప్రాథమికంగా దేని గురించి వివరిస్తుంది?
ద్రవ మిశ్రమంలోని ప్రతి అనుఘటకం మొత్తం బాష్ప పీడనానికి ఎలా దోహదపడుతుందో వివరిస్తుంది.
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Chemistry · topic 1
In a solution, what is the term for the substance in which the solute is dissolved?
Solvent.
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Chemistry · topic 2
నీటి అణువుల మధ్య ఉండే బలమైన ఆకర్షణ బలాలను ఏమని పిలుస్తారు?
హైడ్రోజన్ బంధాలు (Hydrogen bonding).
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Psychology · topic 1
What is the psychological term for variations in traits like intelligence, creativity, and emotionality among people?
Individual differences
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Psychology · topic 1
According to the text, what is the foundation for understanding why students process the same lesson differently?
The principle that no two people process the world the same way.
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Psychology · topic 1
Identify one example of a visible individual difference mentioned in the text.
Height (or voice/walking style).
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Psychology · topic 1
Identify one example of a hidden individual difference mentioned in the text.
Calmness under pressure (or problem-solving style).
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Psychology · topic 1
In the example of Asha and Ravi, what was Asha's primary reaction to the surprise quiz?
Anxiety and making predictions about her grade dropping.
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Psychology · topic 1
In the example of Asha and Ravi, what was Ravi's primary reaction to the surprise quiz?
Curiosity and searching for patterns in what might be asked.
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Psychology · topic 1
What biological factors contribute to individual differences in psychology?
Genes, brain chemistry, and hormones.
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Psychology · topic 1
What environmental factors contribute to individual differences in psychology?
Upbringing, family values, friends, and culture.
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