Most asked ATI TEAS Version 7 Practice Test – Science questions and answers

What is the primary function of the cell membrane ️️ The cell membrane regulates the movement of substances in and out of the cell while providing structural support and protection Which organelle is responsible for ATP production ️️ Mitochondria produce ATP through cellular respiration What is the role of ribosomes in the cell ️️ Ribosomes synthesize proteins by translating mRNA What type of bond is formed when atoms share electrons ️️ A covalent bond is formed when atoms share electrons What is the function of hemoglobin in blood ️️ Hemoglobin transports oxygen from the lungs to tissues and carries carbon dioxide back Which system is primarily responsible for hormone regulation ️️ The endocrine system regulates hormones and long-term body processes What is the basic unit of life ️️ The cell is the basic unit of life What is diffusion in biological systems ️️ Diffusion is the passive movement of molecules from high to low concentration Which blood cells are responsible for clotting ️️ Platelets are responsible for blood clotting What is the main function of the kidneys ️️ The kidneys filter blood and regulate fluid and electrolyte balance What is an enzyme ️️ An enzyme is a biological catalyst that speeds up chemical reactions What is the function of DNA ️️ DNA stores and transmits genetic information What is the primary function of the respiratory system ️️ The respiratory system facilitates gas exchange between oxygen and carbon dioxide What is homeostasis ️️ Homeostasis is the maintenance of a stable internal environment 2 What is the function of white blood cells ️️ White blood cells defend the body against infection and disease What is an element in chemistry ️️ An element is a pure substance made of only one type of atom What is pH measuring ️️ pH measures how acidic or basic a solution is What is the function of the large intestine ️️ The large intestine absorbs water and forms feces What is osmosis ️️ Osmosis is the movement of water across a semi-permeable membrane What is the role of the nucleus ️️ The nucleus controls cell activities and contains genetic material What is a chemical reaction ️️ A chemical reaction is a process where substances are transformed into new substances What is the function of the skeletal system ️️ The skeletal system supports the body and protects internal organs What is the difference between arteries and veins ️️ Arteries carry blood away from the heart while veins carry blood toward the heart What is natural selection ️️ Natural selection is the process where organisms better adapted to their environment survive and reproduce What is the function of chlorophyll ️️ Chlorophyll absorbs light energy for photosynthesis What is a proton ️️ A proton is a positively charged subatomic particle in the nucleus What is the function of the pancreas ️️ The pancreas produces digestive enzymes and regulates blood sugar What is the difference between mitosis and meiosis ️️ Mitosis produces identical cells while meiosis produces genetically different gametes What is inertia ️️ Inertia is the resistance of an object to changes in motion What is the function of the immune system ️️ The immune system protects the body from pathogens What is a solution in chemistry ️️ A solution is a homogeneous mixture of solute and solvent 3 What is the role of alveoli in the lungs ️️ Alveoli are tiny air sacs where gas exchange occurs What is an acid ️️ An acid is a substance that releases hydrogen ions in solution What is a base ️️ A base is a substance that accepts hydrogen ions or releases hydroxide ions What is the function of the liver ️️ The liver detoxifies chemicals and produces bile What is kinetic energy ️️ Kinetic energy is the energy of motion What is potential energy ️️ Potential energy is stored energy based on position or state What is the function of DNA replication ️️ DNA replication ensures genetic information is copied before cell division What is a hypothesis ️️ A hypothesis is a testable explanation for an observation What is the difference between RNA and DNA ️️ RNA is single-stranded and involved in protein synthesis while DNA stores genetic information What is an ecosystem ️️ An ecosystem is a community of organisms interacting with their environment What is the function of the spinal cord ️️ The spinal cord transmits signals between the brain and body What is a carbohydrate ️️ A carbohydrate is a biomolecule that provides energy What is a lipid ️️ A lipid is a biomolecule used for energy storage and cell membranes What is a protein ️️ A protein is a biomolecule made of amino acids that performs many cellular functions What is the periodic table ️️ The periodic table organizes elements by atomic number and properties What is a compound ️️ A compound is a substance formed by two or more elements chemically bonded What is a chemical bond ️️ A chemical bond is the force that holds atoms together What is the function of the heart ️️ The heart pumps blood throughout the body 4 What is respiration at the cellular level ️️ Cellular respiration is the process of producing ATP from glucose What is the function of the thyroid gland ️️ The thyroid regulates metabolism through hormone secretion What is an allele ️️ An allele is a variant form of a gene What is a mutation ️️ A mutation is a change in DNA sequence What is a food chain ️️ A food chain shows energy transfer from one organism to another