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Essential Biology Fundamentals

Biology

A collection of foundational facts covering cells, genetics, ecosystems, and human physiology.

science education biology
15 Questions Easy Ages 5+ Sep 8, 2026
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About this Study Set

This study set covers Biology through 15 practice questions. A collection of foundational facts covering cells, genetics, ecosystems, and human physiology. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 15 questions from the Essential Biology Fundamentals study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 What is the basic structural and functional unit of all living organisms?
  • A Atom
  • B Cell
  • C Molecule
  • D Organ
2 Which organelle is known as the powerhouse of the cell because it generates energy?
  • A Nucleus
  • B Ribosome
  • C Mitochondrion
  • D Lysosome
3 What molecule carries the genetic instructions for the development and functioning of living things?
  • A DNA
  • B Protein
  • C Lipid
  • D Sugar
4 Which process do plants use to convert sunlight into chemical energy?
  • A Respiration
  • B Digestion
  • C Photosynthesis
  • D Fermentation
5 What are the primary products of photosynthesis?
  • A Oxygen and glucose
  • B Carbon dioxide and water
  • C Nitrogen and protein
  • D Fat and minerals
6 Which kingdom do mushrooms and molds belong to?
  • A Plantae
  • B Animalia
  • C Fungi
  • D Protista
7 What is the name of the pigment that makes plants appear green?
  • A Carotene
  • B Chlorophyll
  • C Anthocyanin
  • D Hemoglobin
8 How many chambers are in a standard human heart?
  • A Two
  • B Three
  • C Four
  • D Five
9 What is the primary function of red blood cells?
  • A Fighting infection
  • B Transporting oxygen
  • C Clotting blood
  • D Producing antibodies
10 Which group of vertebrates maintains a constant internal body temperature?
  • A Reptiles
  • B Amphibians
  • C Fish
  • D Mammals
11 What is the scientific term for an organism that only eats plants?
  • A Carnivore
  • B Omnivore
  • C Herbivore
  • D Decomposer
12 Which gas do humans exhale as a waste product of respiration?
  • A Oxygen
  • B Nitrogen
  • C Carbon dioxide
  • D Hydrogen
13 Which part of the plant is responsible for absorbing water and nutrients from the soil?
  • A Flower
  • B Leaf
  • C Stem
  • D Root
14 What is the protective outer layer of an animal cell called?
  • A Cell wall
  • B Cell membrane
  • C Cytoplasm
  • D Nucleus
15 In which organ does the majority of nutrient absorption take place in the human body?
  • A Stomach
  • B Large intestine
  • C Small intestine
  • D Esophagus
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