Trending edition TEAS practice test (science portion) questions and answers

Which of the following best describes the primary function of ribosomes in a cell? A. Lipid storage B. Protein synthesis C. DNA replication D. Energy production ️️ B. Protein synthesis Which organelle is responsible for detoxifying harmful substances in liver cells? A. Golgi apparatus B. Lysosome C. Smooth endoplasmic reticulum D. Nucleus ️️ C. Smooth endoplasmic reticulum What type of blood vessel carries blood away from the heart? A. Veins B. Capillaries C. Arteries D. Venules ️️ C. Arteries Which macromolecule is the primary source of quick energy for the body? A. Lipids B. Proteins C. Carbohydrates D. Nucleic acids ️️ C. Carbohydrates What is the main function of hemoglobin? A. Fight infection B. Transport oxygen C. Digest fats D. Produce hormones ️️ B. Transport oxygen Which process describes water moving across a selectively permeable membrane? A. Active transport B. Diffusion C. Osmosis 2 D. Phagocytosis ️️ C. Osmosis What is the basic unit of heredity? A. Chromosome B. Gene C. Protein D. Allele pair ️️ B. Gene Which part of the brain controls balance and coordination? A. Cerebrum B. Cerebellum C. Medulla D. Hypothalamus ️️ B. Cerebellum Which gas is most directly involved in cellular respiration? A. Carbon dioxide B. Nitrogen C. Oxygen D. Hydrogen ️️ C. Oxygen What is the function of white blood cells? A. Carry oxygen B. Clot blood C. Fight infection D. Transport nutrients ️️ C. Fight infection Which phase of mitosis involves separation of sister chromatids? A. Prophase B. Metaphase C. Anaphase D. Telophase ️️ C. Anaphase What is the pH of a neutral solution? A. 0 B. 7 C. 14 D. 10 ️️ B. 7 3 Which organ system is primarily responsible for hormone regulation? A. Nervous system B. Endocrine system C. Respiratory system D. Digestive system ️️ B. Endocrine system Which structure in the kidney filters blood? A. Ureter B. Nephron C. Bladder D. Urethra ️️ B. Nephron What is the main function of the alveoli? A. Pump blood B. Exchange gases C. Filter toxins D. Produce mucus ️️ B. Exchange gases Which element is essential for thyroid hormone production? A. Iron B. Calcium C. Iodine D. Sodium ️️ C. Iodine What is the primary role of DNA? A. Store energy B. Carry genetic information C. Digest proteins D. Transport oxygen ️️ B. Carry genetic information Which force pulls objects toward Earth? A. Friction B. Magnetism C. Gravity D. Tension ️️ C. Gravity What is the function of the large intestine? A. Protein digestion B. Water absorption 4 C. Oxygen exchange D. Hormone secretion ️️ B. Water absorption Which biomolecule contains genetic instructions? A. Lipids B. Proteins C. Carbohydrates D. Nucleic acids ️️ D. Nucleic acids What is the main function of the myocardium? A. Protect lungs B. Pump blood C. Filter urine D. Store oxygen ️️ B. Pump blood Which blood type is known as the universal donor? A. AB+ B. O- C. A+ D. B- ️️ B. O- Which organ produces insulin? A. Liver B. Pancreas C. Kidney D. Stomach ️️ B. Pancreas What is homeostasis? A. Cell division B. Stable internal environment C. Protein synthesis D. Genetic mutation ️️ B. Stable internal environment Which part of the eye controls light entry? A. Retina B. Cornea C. Iris D. Lens ️️ C. Iris 5 Which type of bond involves sharing electrons? A. Ionic bond B. Covalent bond C. Hydrogen bond D. Metallic bond ️️ B. Covalent bond What is the primary function of the skeletal system? A. Hormone production B. Movement and support C. Oxygen transport D. Heat regulation ️️ B. Movement and support Which structure carries urine from kidneys to bladder? A. Urethra B. Ureter C. Nephron D. Cortex ️️ B. Ureter What is the main function of chloroplasts? A. Energy storage B. Protein synthesis C. Photosynthesis D. Cell division ️️ C. Photosynthesis Which organ system includes the trachea? A. Digestive system B. Respiratory system C. Circulatory system D. Nervous system ️️ B. Respiratory system Which molecule stores energy for immediate use in cells? A. DNA B. ATP C. RNA D. Glucose ️️ B. ATP What is the function of platelets? A. Fight infection B. Carry oxygen 6 C. Blood clotting D. Hormone transport