PRAXIS Biology Quizzes, Questions & Answers

Top Trending PRAXIS Biology Quizzes

Praxis Biology Natural Selection and Adaptation Quiz

This Praxis Biology Natural Selection and Adaptation Quiz tests your understanding of evolutionary mechanisms and how organisms adapt to their environments. You'll explore natural selection, variation, inheritance, and the...

Questions: 15 | Attempts: 16 | Last updated: May 7, 2026

Sample Question
Which of the following best explains how natural selection leads to adaptation?

Organisms develop traits during their lifetime to survive

Individuals with beneficial traits reproduce more successfully, passing traits to offspring

All organisms in a population acquire identical mutations

Environmental changes directly modify organism DNA

Praxis Biology Cell Structure and Division Quiz

This Praxis Biology Cell Structure and Division Quiz assesses your understanding of cellular components, organelle functions, and the mechanisms of mitosis and meiosis. Designed for college-level students, it covers prokaryotic...

Questions: 15 | Attempts: 14 | Last updated: May 7, 2026

Sample Question
Which organelle is responsible for ATP production in eukaryotic cells?

Mitochondrion

Ribosome

Golgi apparatus

Endoplasmic reticulum

Praxis Biology Human Organ Systems Quiz

This Praxis Biology Human Organ Systems Quiz assesses your understanding of major organ systems, their structures, and physiological functions. You'll explore the cardiovascular, respiratory, digestive, nervous, endocrine, and...

Questions: 15 | Attempts: 14 | Last updated: May 7, 2026

Sample Question
Which chamber of the heart receives deoxygenated blood from the body?

Right atrium

Left atrium

Right ventricle

Left ventricle

Praxis Biology Ecosystems and Food Web Dynamics Quiz

This quiz assesses your understanding of ecosystems and food web dynamics, core topics in the Praxis Biology Ecosystems and Food Web Dynamics Quiz. You'll explore energy flow, trophic levels, nutrient cycling, and population...

Questions: 15 | Attempts: 11 | Last updated: May 7, 2026

Sample Question
In a food chain, approximately what percentage of energy is transferred from one trophic level to the next?

10%

25%

50%

75%

Recent PRAXIS Biology Quizzes

Praxis Biology Mendelian Genetics and Heredity Quiz

Questions: 15 | Attempts: 10 | Last updated: May 7, 2026

Sample Question
In a monohybrid cross between two heterozygous pea plants (Aa × Aa), what is the expected phenotypic ratio in the F₂ generation?

1:1

3:1

9:3:3:1

1:1:1:1