Tell your AI what you’re learning. Recall turns it into flashcards, lets you review them right in the chat, and schedules every card so it sticks.
Free for everyday studying. Works in Claude today, ChatGPT soon, and on the web.
Made 32 cards from Lecture 7, in the order the lecture builds them: antigen presentation, then B and T cell activation, then antibodies. The first ten are ready to review here.
Two heavy and two light chains. The tips of the arms bind the antigen; the stem (Fc) signals immune cells.
The kinds of cards Recall can show. Click one to turn it over.
Katsushika Hokusai, Under the Wave off Kanagawa, about 1831.
A woodblock print from the series Thirty-six Views of Mount Fuji. Fuji is the small peak in the trough of the wave.
Evaluate
and name the trick that makes it possible.
Call it I. Square it and switch to polar coordinates:
so
Kenya. Capital: Nairobi.
It borders Ethiopia, Somalia, Tanzania, Uganda and South Sudan, with a coast on the Indian Ocean.
駅えきまで歩あるいて十分じゅっぷんぐらいです。
“It’s about a ten-minute walk to the station.”
Of the heart’s four chambers, which one sends oxygen-rich blood out to the rest of the body?
And why is its wall the thickest?
The left ventricle, through the aortic valve into the aorta. It pumps against the highest pressure.
The two highlighted keys are played together.
A perfect fifth: seven semitones, from C up to G.
You hear it between the first two notes of Twinkle, Twinkle, Little Star.
A patient with high blood pressure is started on metoprolol.
What class of drug is it, how does it work, and what should you watch for?
Return the indices of the two numbers in nums that add up to target, in a single pass.
nums
target
def two_sum(nums, target): # your answer here
Remember each value’s index, and look up the complement.
def two_sum(nums, target): seen = {} for i, x in enumerate(nums): if target - x in seen: return [seen[target - x], i] seen[x] = i
O(n) time, O(n) space.
Which wars did it end, and why is it still cited in international relations today?
It ended the Thirty Years’ War in the Holy Roman Empire and the Eighty Years’ War between Spain and the Dutch Republic.
It’s cited as the start of the modern order of sovereign states: each ruler decides matters within their own territory.
Recall works with anything your AI can read in the conversation.
Add Recall as a connector in Claude, on any plan. It takes a minute, and you sign in once. See how.
In any chat, say Using Recall, make me cards on this. The AI writes them; Recall keeps them.
Using Recall, make me cards on this
Recall schedules each card for when you’re about to forget it. Open it in the chat or on the web, and today’s cards are waiting.
Free for everyday studying. See pricing