EduAvenues · TJ PrepEnrolled? Sign in

Class prep · TJ AP Biology

Connect the mechanism,then explain the evidence.

An independent AP Biology prep course, from chemistry, cells and energy through heredity, gene expression, evolution and ecology. Interpret original experimental data, connect structure to function, and build clear explanations from evidence. Every problem has a full worked solution. Built by Neil Kothari, a TJ alumnus.

Try the free lessonEnroll

$395 covers the full school year. The first lesson is free.

Try one. This is a test-level question from the course.

Problem 1

  • Test level
  • Multiple choice
  • No calculator
  • 4 pts

A neutral polar solute dissolves in water, while a nonpolar solute of similar size has low solubility under the same conditions. Which explanation best fits this comparison?

Choose one answer

original problems, each with a worked answer
624
original problems, each with a worked answer
at test level or beyond
432
at test level or beyond
short lessons, one for every topic
48
short lessons, one for every topic
units, all open now
8
units, all open now

Free lesson

Lesson 1.1: Water and Biological Interactions

Connect water polarity to molecular interactions, thermal behavior, and controlled evidence.

Start with water, chemical bonds and the biological consequences of molecular interactions.

Problem 2

  • Core
  • True or false
  • No calculator
  • 2 pts

True or false: When liquid water evaporates without a chemical reaction, its oxygen-hydrogen covalent bonds must break.

Is the statement true or false?

Problem 3

  • Core
  • Multiple choice
  • No calculator
  • 4 pts

Which observation most directly illustrates cohesion among water molecules?

Choose one answer

Open the rest of this lesson, free

The full lesson and all 13 of its problems, with every worked answer.

I am aI am a

Your free lesson opens right here, on this device for 30 days. We'll email you occasional TJ class prep updates. Unsubscribe anytime.

How it works

Class prep that works alongside class

A complete AP Biology course for students in grades 9 to 12. Work alongside your school course or study the material in sequence after introductory biology and chemistry. Each lesson starts with a concrete example, develops the idea, and shows how to check your reasoning before you try the practice.

  • Original problems in several formats: true or false, multiple choice, multi-part and free response.
  • Each one is marked core, test level or beyond.
  • Interpret experimental data, distinguish competing explanations and connect biological structures to their functions.
  • A worked answer for every problem, ending with the mistake that most often costs points.
  • A lesson on every topic, with diagrams that connect biological structures and processes.

What is inside

  1. 1Chemistry of Life6 lessons · 78 problems
  2. 2Cells and Membrane Transport6 lessons · 78 problems
  3. 3Cellular Energetics6 lessons · 78 problems
  4. 4Cell Communication and the Cell Cycle6 lessons · 78 problems
  5. 5Heredity6 lessons · 78 problems
  6. 6Gene Expression and Regulation6 lessons · 78 problems
  7. 7Evolution and Common Ancestry6 lessons · 78 problems
  8. 8Ecology6 lessons · 78 problems
The front entrance of Thomas Jefferson High School for Science and Technology
Neil Kothari, co-founder of EduAvenues

Who built it

Neil Kothari

TJHSST alumnus · Co-founder, EduAvenues · 10+ years in TJ preparation

Neil is a TJ alumnus and has spent more than a decade working with TJ students and their families. He built this course so students can connect biological mechanisms, experimental design and evidence. Every problem is written for the course and every answer is checked before it goes in.

Tuition

$395for the full school year

One tuition covers every unit of the course. All 8 units are open now. The Water and Biological Interactions lesson stays free for everyone.

  • All 8 units: 48 lessons and 624 original problems
  • A worked answer for every problem
  • Access through the end of the school year
Enroll