Yes. The free plan includes 5 practice tests per course. Full access is $19.99/mo per course.

What exams does Cognify cover?

Cognify covers AP Psychology, Digital SAT, AP Biology, and AP Statistics with practice tests, rubric-graded FRQs, and score prediction.

How does Cognify compare to Khan Academy?

Cognify focuses on exam-format practice with AI grading and score prediction. Khan Academy provides broad video instruction. Cognify is purpose-built for AP and SAT exam day performance.

How does Cognify compare to UWorld and Princeton Review?

UWorld and Princeton Review rely on static question banks that students exhaust after a few sessions. Cognify generates fresh questions on demand against the official College Board exam blueprint, so every practice test is unique. FRQs are graded point-by-point against AP rubrics with specific feedback on what you earned and missed.

How accurate is the AP score prediction?

Cognify maps your percentage correct to the public AP composite scoring buckets (1-5) using historical score distributions. The prediction improves as you take more practice tests. For the Digital SAT, scores map to the 400-1600 scale using official section score conversion tables.

Does Cognify cover AP FRQ practice?

Yes. Cognify provides rubric-graded FRQ practice for AP Psychology, AP Biology, and AP Statistics. Each response is scored criterion by criterion against the official AP rubric with specific written feedback explaining what you earned, what you missed, and how to improve.

Macromolecules Overview

AP Biology — Chemistry of Life

Overview

The four macromolecules: carbohydrates, lipids, proteins, and nucleic acids. Monomers, polymers, dehydration synthesis, and hydrolysis.

Key Terms

monomer
polymer
dehydration synthesis
hydrolysis
carbohydrate
lipid
protein
nucleic acid

Exam Tips

Know the monomer for each macromolecule
Understand dehydration synthesis vs hydrolysis

Common Mistakes to Avoid

Saying lipids are polymers (they are not)
Forgetting that enzymes are proteins

Frequently Asked Questions

Are lipids considered polymers?

No. Unlike carbohydrates, proteins, and nucleic acids, lipids are not true polymers because they are not built from repeating monomer subunits joined by dehydration synthesis.

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Macromolecules Overview

AP Biology — Chemistry of Life

Overview

The four macromolecules: carbohydrates, lipids, proteins, and nucleic acids. Monomers, polymers, dehydration synthesis, and hydrolysis.

Key Terms

monomer
polymer
dehydration synthesis
hydrolysis
carbohydrate
lipid
protein
nucleic acid

Exam Tips

Know the monomer for each macromolecule
Understand dehydration synthesis vs hydrolysis

Common Mistakes to Avoid

Saying lipids are polymers (they are not)
Forgetting that enzymes are proteins

Frequently Asked Questions

Are lipids considered polymers?

No. Unlike carbohydrates, proteins, and nucleic acids, lipids are not true polymers because they are not built from repeating monomer subunits joined by dehydration synthesis.

Ready to practice Macromolecules Overview?

AI-generated questions with instant feedback. Free to start.

Start Practicing Free

Macromolecules Overview

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Macromolecules Overview?

Related Chemistry of Life Topics

Macromolecules Overview

Overview

Key Terms

Exam Tips

Common Mistakes to Avoid

Frequently Asked Questions

Ready to practice Macromolecules Overview?

Related Chemistry of Life Topics