Origins & Composition of Life (Ch. 1, L2)
• Earth formed: ~4.54 bya (textbook consensus).
• Prebiotic world: Before life emerged (~4.5–3.5 bya), atmosphere had H₂O, N₂, CO₂, CH₄, NH₃, SO₂, energy from lightning/UV.
• First evidence of life: ~3.5 billion years ago.
Composition of life
• 70% water.
• Major dry weight: C, H, O, N (87%), P, S, K, Ca, Mg.
Functional groups (must know cold):
• Amine (can be + at pH 7).
• Carboxyl (– at pH 7).
• Alcohol (–OH).
• Thiol (–SH)...
Discuss various string operators in python 1)concentration operator : the +operator is used to concentrate 2 or more thing
Python Code str1 = "Hello"
str2 = "World"
print(str1 + " " + str2) Output: Hello World
2)repeational operator : *operator is used to repeat a string a specified no of time
Python Code str1 = "Hello"
print(str1 * 3) # Output: HelloHelloHello
3)indexing operation ([ ]):[ ] operator is used to aceesed a character a specified index at string
Python code :str1 = "Hello"
Unit-4
Modular Programming
Modular programming is a software design technique that divides a program into smaller, independent, and reusable units called modules or functions. Each module performs a specific task, which helps in organizing, testing, and debugging programs more efficiently. By breaking a large problem into manageable pieces, programmers can focus on one module at a time, reducing complexity and improving readability. Modules can be developed, tested, and maintained separately,
Unit-- 3
Extracting Digits of a Number (Left to Right and Right to Left)
Extracting digits of a number is a fundamental programming task used in various computational problems, such as reversing a number, checking for palindromes, or performing digit-based calculations. There are two main approaches: right-to-left extraction and left-to-right extraction. In right-to-left extraction, the modulus operator (%) is used to obtain the last digit of the number, while integer division (/) removes the last
Unit-- 1
Problems and Problem Instances
A problem in computer science is a clearly defined task or situation that requires a solution using logical and computational methods. It describes what needs to be achieved without specifying how to achieve it. A problem usually includes input data, required output, and certain constraints that must be satisfied. For example, “finding the maximum number in a list” is a problem statement. A problem instance is a specific example of that problem with actual
Q6. How does Tagore imagine an ideal society in Where the Mind is Without Fear?
Rabindranath Tagore’s poem Where the Mind is Without Fear presents one of the most profound and enduring visions of an ideal society in modern Indian literature. Written during the period of colonial rule, the poem is not merely a lyrical composition but a deeply philosophical and political statement. Tagore imagines an ideal society based not on material prosperity or political dominance but on moral integrity, intellectual
...Friedreich ataxia (AR): childhood onset, FRDA gene, GAA repeat. Degeneration of posterior columns (↓ vibration & position), corticospinal tracts (Babinski+), peripheral nerves (areflexia); cerebellum mildly involved. Clinical: progressive gait ataxia, dysarthria, dysphagia, preserved cognition. Associated: pes cavus, scoliosis, diabetes mellitus, hypertrophic cardiomyopathy. Wheelchair ~10 yrs, death ~35 yrs (cardiac). No cure; idebenone ↓ cardiac hypertrophy.
Pierre-Marie disease (SCA3,
<!DOCTYPE> <html> <head> <title>Our lesson 1 in myclass</title> <link rel="stylesheet" type="text/css" href="style.css" /> </head> <body> <a href=lesson2.html>why html lessons</a> <br> <header> <h1>This is our first webpage in 092</h1> <h3> These are my fave animals: </h3> <ul>
There are seven continents: Africa, Antarctica, Asia, Europe, North America, South America, and Australia.
There are five major oceans: Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, and Arctic Ocean.
• low-income economies (LICs)
less than > 1036
• middle-income economies (MICS)
1036< and < 12535
• high-income economies (HICS)
< 12535
Sustainability refers to meeting the needs of the present without compromising the ability of future generations to meet their own