• Question: I am a molecule that stores genetic information. What am I?
• Answer: DNA
• Question: I am green, photosynthetic, and provide oxygen. What am I?
• Answer: Chloroplast
• Question: I am tiny, circular, and the powerhouse of the cell. What am I?
• Answer: Mitochondrion
• Question: I am the process of converting sunlight into chemical energy. What am I?
• Answer: Photosynthesis
• Question: I am a protective layer surrounding plant cells. What am I?
• Answer: Cell Wall
• Question: I am the body’s main transport system. What am I?
• Answer: Circulatory System
• Question: I am a green pigment essential for photosynthesis. What am I?
• Answer: Chlorophyll
• Question: I am the process of cell division. What am I?
• Answer: Mitosis
• Question: I am the smallest unit of life. What am I?
• Answer: Cell
• Question: I am the body’s chemical messenger system. What am I?
• Answer: Hormones
• Question: I am the site of protein synthesis. What am I?
• Answer: Ribosome
• Question: I am the storage unit for food, water, and waste in plant cells. What am I?
• Answer: Vacuole
• Question: I am a protective layer surrounding animal cells. What am I?
• Answer: Cell Membrane
• Question: I am a fluid-filled sac that cushions and supports plant cells. What am I?
• Answer: Central Vacuole
• Question: I am the body’s first line of defense against pathogens. What am I?
• Answer: Immune System
• Question: I am the process of breaking down food to release energy. What am I?
• Answer: Respiration
• Question: I am the control center of the cell. What am I?
• Answer: Nucleus
• Question: I am the process of genetic recombination. What am I?
• Answer: Meiosis
• Question: I am the network of interconnected membranes within the cell. What am I?
• Answer: Endoplasmic Reticulum

• Question: I am the process of converting glucose into energy. What am I?
• Answer: Cellular Respiration
• Question: I am the chemical responsible for heredity and variation. What am I?
• Answer: Gene
• Question: I am the tiny structure where proteins are assembled. What am I?
• Answer: Ribosome
• Question: I am the organelle responsible for detoxification in the cell. What am I?
• Answer: Peroxisome
• Question: I am the process of cell self-destruction. What am I?
• Answer: Apoptosis
• Question: I am the substance that gives skin and hair their color. What am I?
• Answer: Melanin
• Question: I am the fluid that surrounds the organelles inside a cell. What am I?
• Answer: Cytoplasm
• Question: I am the network of protein fibers that give a cell its shape and help it move. What am I?
• Answer: Cytoskeleton
• Question: I am the process by which cells engulf large particles. What am I?
• Answer: Phagocytosis
• Question: I am the protective layer surrounding the nucleus. What am I?
• Answer: Nuclear Envelope
• Question: I am the cell organelle responsible for packaging and distributing proteins. What am I?
• Answer: Golgi Apparatus
• Question: I am the double-layered membrane that surrounds the nucleus. What am I?
• Answer: Nuclear Membrane
• Question: I am the organelle that contains digestive enzymes. What am I?
• Answer: Lysosome
• Question: I am the process by which cells break down molecules to obtain energy without oxygen. What am I?
• Answer: Fermentation
• Question: I am the structure that controls what enters and exits the cell. What am I?
• Answer: Cell Membrane
• Question: I am the organelle responsible for synthesizing lipids. What am I?
• Answer: Smooth Endoplasmic Reticulum
• Question: I am the organelle that contains chlorophyll and is responsible for photosynthesis. What am I?
• Answer: Chloroplast
• Question: I am the process of making new cells. What am I?
• Answer: Cell Division

Another Bio riddles

• Question: I am the structure that connects bones to other bones. What am I?
• Answer: Ligament
• Question: I am the fluid that lubricates joints. What am I?
• Answer: Synovial Fluid
• Question: I am the smallest blood vessels in the body. What am I?
• Answer: Capillary
• Question: I am the organ responsible for filtering blood and removing toxins. What am I?
• Answer: Kidney
• Question: I am the part of the brain responsible for coordinating movement and balance. What am I?
• Answer: Cerebellum
• Question: I am the process by which organisms exchange gases with the environment. What am I?
• Answer: Respiration
• Question: I am the hormone responsible for regulating blood sugar levels. What am I?
• Answer: Insulin
• Question: I am the fluid that surrounds the brain and spinal cord. What am I?
• Answer: Cerebrospinal Fluid
• Question: I am the involuntary muscle found in the heart. What am I?
• Answer: Cardiac Muscle
• Question: I am the hormone responsible for regulating sleep-wake cycles. What am I?
• Answer: Melatonin
• Question: I am the organ responsible for producing insulin and regulating blood sugar. What am I?
• Answer: Pancreas
• Question: I am the organ responsible for producing bile and detoxifying the blood. What am I?
• Answer: Liver
• Question: I am the hormone responsible for fight or flight responses. What am I?
• Answer: Adrenaline
• Question: I am the part of the eye responsible for controlling the amount of light that enters. What am I?
• Answer: Iris
• Question: I am the process by which nutrients are absorbed into the bloodstream. What am I?
• Answer: Absorption
• Question: I am the hormone responsible for regulating metabolism. What am I?
• Answer: Thyroid Hormone
• Question: I am the fluid that transports oxygen and nutrients to the body’s cells. What am I?
• Answer: Blood
• Question: I am the organ responsible for producing red blood cells. What am I?
• Answer: Bone Marrow
• Question: I am the process by which the body maintains a stable internal environment. What am I?
• Answer: Homeostasis

• Question: I am the fluid-filled sac that cushions and protects the embryo in the womb. What am I?
• Answer: Amniotic Sac
• Question: I am the hormone responsible for the development of male characteristics. What am I?
• Answer: Testosterone
• Question: I am the process by which plants lose water vapor through their leaves. What am I?
• Answer: Transpiration
• Question: I am the hormone responsible for the regulation of blood calcium levels. What am I?
• Answer: Parathyroid Hormone
• Question: I am the structure that connects muscles to bones. What am I?
• Answer: Tendon
• Question: I am the process by which plants bend toward light. What am I?
• Answer: Phototropism
• Question: I am the hormone responsible for the regulation of water retention and blood pressure. What am I?
• Answer: Aldosterone
• Question: I am the fluid that fills the space between cells in tissues. What am I?
• Answer: Interstitial Fluid
• Question: I am the hormone responsible for the regulation of blood sugar levels when they are too high. What am I?
• Answer: Glucagon
• Question: I am the process by which plants bend away from touch. What am I?
• Answer: Thigmotropism
• Question: I am the hormone responsible for the development of female characteristics. What am I?
• Answer: Estrogen
• Question: I am the enzyme that breaks down proteins in the stomach. What am I?
• Answer: Pepsin
• Question: I am the hormone responsible for stimulating milk production in breastfeeding women. What am I?
• Answer: Prolactin
• Question: I am the enzyme that breaks down starch into sugars in the mouth. What am I?
• Answer: Amylase
• Question: I am the hormone responsible for the regulation of blood sugar levels when they are too low. What am I?
• Answer: Insulin
• Question: I am the enzyme that breaks down fats into fatty acids and glycerol. What am I?
• Answer: Lipase
• Question: I am the hormone responsible for the regulation of sleep-wake cycles. What am I?
• Answer: Melatonin
• Question: I am the enzyme that breaks down nucleic acids into nucleotides. What am I?
• Answer: Nuclease

Getting over with Bio riddles

• Question: I am the structure that stores excess sugar in the liver. What am I?
• Answer: Glycogen
• Question: I am the hormone responsible for regulating salt levels in the body. What am I?
• Answer: Aldosterone
• Question: I am the fluid-filled sac that cushions and protects joints. What am I?
• Answer: Synovial Fluid
• Question: I am the enzyme that breaks down carbohydrates in the mouth. What am I?
• Answer: Salivary Amylase
• Question: I am the hormone responsible for regulating hunger and satiety. What am I?
• Answer: Leptin
• Question: I am the process by which plants open and close their stomata. What am I?
• Answer: Stomatal Movement
• Question: I am the hormone responsible for the regulation of blood pressure. What am I?
• Answer: Renin
• Question: I am the enzyme that breaks down proteins in the small intestine. What am I?
• Answer: Trypsin
• Question: I am the hormone responsible for the regulation of calcium levels in the blood. What am I?
• Answer: Calcitonin
• Question: I am the process by which plants grow towards gravity. What am I?
• Answer: Gravitropism
• Question: I am the hormone responsible for the regulation of body temperature. What am I?
• Answer: Thyroid Hormone
• Question: I am the enzyme that breaks down fats in the small intestine. What am I?
• Answer: Pancreatic Lipase
• Question: I am the hormone responsible for the regulation of blood pressure and fluid balance. What am I?
• Answer: Antidiuretic Hormone (ADH)
• Question: I am the enzyme that breaks down nucleic acids in the small intestine. What am I?
• Answer: Pancreatic Nuclease
• Question: I am the hormone responsible for the regulation of hunger and appetite. What am I?
• Answer: Ghrelin
• Question: I am the enzyme that breaks down carbohydrates in the small intestine. What am I?
• Answer: Pancreatic Amylase
• Question: I am the hormone responsible for the regulation of blood pressure and electrolyte balance. What am I?
• Answer: Atrial Natriuretic Peptide (ANP)
• Question: I am the enzyme that breaks down nucleic acids in the mouth. What am I?
• Answer: Salivary Nuclease