TEAS 7 Science Practice Test 2023 (40 Questions with Explained Answers)

welcome to the 2023 t7 science practice test this test will have 20 questions with explained answers that will help you prepare for the test be sure to resuscitate the like button by turning it white question one which term defines the following all body systems must be in a condition of balance for the body to survive and work properly a glycolysis B photosynthesis C homeostasis D hemoptysis the correct answer is C homeostasis the body engages in homeostatic mechanisms which are unconscious processes to keep itself in balance for instance if the body becomes dehydrated it will stop making as much urine so that the body does not become further dehydrated question two where is the ulna bone in relation to the metacarpals a posterior B Superior C proximal D inferior the correct answer is B Superior the term Superior means above the ulna bone is in the arm and is above the metacarpals hand bones question three what one of the following is not a type of fat a unsaturated b polysaturated c globular D monounsaturated the correct answer is C globular globular is a type of protein globular proteins are water-soluble proteins all of the other options are fats question four what cells in the body are responsible for waste removal a ribosomes B lysosomes C enzymes D biosomes the correct answer is B lysosomes an organelle of a cell that is a cell membrane and houses digestive enzymes is called a lysosome numerous cell processes involve lysosomes they disassemble extra or worn out cell components they could be utilized to eliminate invasive bacteria and viruses question five which of the following is the medical term for the knee a ulna B radius C patella D tibia the correct answer is C patella in the human body the patella has the largest sesamoid bone it serves as the patellar ligament and the quadriceps tendons attachment point in everyday language it is also referred to as the knee bone question six how many layers is the skin composed of A4 B1 C2 D3 the correct answer is D3 the skin is made up of three layers these layers are the hypodermis dermis and epidermis the epidermis is the outermost layer that you can physically see question seven what is another term that describes the Gene's genetic makeup a phenotype B genotype c homozygote d anotype the correct answer is B genotype a genotype is the makeup of an organism's genetic code different genotypes make up a person's specific genetics question eight bile from the liver is stored and concentrated in what organ a liver B pancreas C spleen D gallbladder the correct answer is D gallbladder the gallbladder is the organ that stores bile it also makes it more concentrated the gallbladder does not make bile the other organs listed above are also involved in the digestive process question nine which of the following organs is responsible for absorbing vitamin K from the digestive tract a duodenum B large intestine C small intestine D liver the correct answer is B large intestine the purpose of the colon is to absorb vitamins water and minerals that the body's other organs have not been able to absorb this includes absorbing vitamin K question 10 what term defines the mass weighted average of the isotope masses that make up an element a atomic mass B cell Mass C atomic radius D base radius the correct answer is a atomic mass the atomic mass of an element which is a weighted average of all its Isotopes is calculated by multiplying the mass of each isotope by its abundance the sum of an element's mass number and its number of protons and neutrons is given by the formula mass number equals protons plus neutrons question 11 somatic cells undergo which process to produce more cells a meiosis B mitosis C halitosis D abiogenesis the correct answer is B mitosis somatic cells include all cells in the body other than sperm cells and egg cells gametes these somatic cells must undergo mitosis in order to multiply question 12. what is the pH of an acid a greater than 7 B greater than 5.5 C less than 7 D less than 6.5 the correct answer is C less than seven anything that is acidic is below 7.0 while everything that is alkaline or basic is above 7.0 a pH scale that lists the pH values of common substances and ranges from zero extremely basic or alkaline to 14 very basic or alkaline question 13 what is the protective layer around nerves called a sheafs B myelin C fats D membrane the correct answer is B myelin a protective layer or sheath called myelin develops around nerves including those in the brain and spinal cord it is composed of fatty and protein components electrical impulses may move swiftly and effectively along nerve cells thanks to the myelin coating question 14 which parts of the nervous system regulates voluntary actions a somatic B autonomic C Central D peripheral the correct answer is a somatic in the nervous system voluntary acts are managed by the somatic nervous system voluntary acts can be chewing swallowing brushing your teeth involuntary acts are performed by the autonomic nervous system these include the heart pumping question 15 which of the following is not considered a mammal a humans B whales C bats D shark the correct answer is D shark warm-blooded vertebrate animals classified as mammals are known for having hair or fur secreting milk to feed their young and frequently giving birth to live young sharks are considered fish while whales are a type of fish they give birth to live young question 16 what is the name of the appendages that receive communication from other cells a neuron B axon C dendrite D transistor the correct answer is C dendrite appendages called dendrites are made to receive signals from neighboring cells they take the form of projections with a tree-like structure that are triggered by other neurons and carry the electrochemical charge to the cell body or more rarely directly to the axons question 17 what property of an element decides its particular isotope the number of a neurons B peptides C neutrons D protons the correct answer is C neutrons the particular isotope of an element depends on the amount of neutrons in that element the number of protons defines what element the atomic particle is whereas the number of electrons determines whether it has a positive negative or neutral charge question 18 which of the following bases is not found in DNA a by mean B adenine C purine D guanine the correct answer is C purine the four nucleotide spaces found in DNA are adenine cystocene guanine thymine these can be remembered with the acronym acgt question 19 which of the following is not an example of a polar bond a sulfur dioxide B ammonia C water D sodium chloride the correct answer is D sodium chloride due to differences in electronegativity or because of inductive effects a polar covalent bond is one in which the electron density is unequally distributed across the two linked atoms sodium chloride is an example of an ionic bond question 20. through the processes of photosynthesis and oxygen release blank provide energy that supports plant growth and crop output B chloroplast B algal shells C mitochondria D parenchyma the correct answer is a chloroplast an organelle found in the cells of plants and certain algae called a chloroplast is where photosynthesis the process by which solar energy is transformed into chemical energy for development takes place question 21 which law describes the relationship between volume and temperature with constant pressure and volume a Boyle's Law B Charles's Law C Doyle's law D ideal gas law the correct answer is B Charles's Law the volume of a gas is equal to a constant amount multiplied by the temperature of the gas as determined by the Kelvin scale according to the physical principle known as Charles's Law the equation of the law is PV equals K question 22 what is the name of the muscle used to Aid in respiration in humans a epiglottis B diaphragm C myocardium D vestigial the correct answer is B diaphragm the main muscle used for breathing is the diaphragm which is situated underneath the lungs it is a large dome-shaped muscle that frequently contracts unconsciously and regularly the diaphragm flattens and tightens during inhalation and the chest cavity widens question 23 which of the following choices have an alkaline base a ammonium B lemon juice C vinegar D carbonated drinks the correct answer is a ammonium ammonia is corrosive and has alkaline characteristics ammonium hydroxide a caustic solution and weak base is produced when ammonia gas readily dissolves in water the pH of ammonia is usually 11 to 13. question 24 which the following organs are not included in the thoracic cavity a heart B lungs C pancreas D esophagus the correct answer is C pancreas the pancreas is an organ in the abdominal cavity the main organs found in the thoracic cavity belong to the respiratory and cardiovascular systems question 25 which of the following infections is caused by a bacterium a influenza B HPV C varicella chickenpox D pneumonia the correct answer is D pneumonia pneumonia can be viral or bacterial influenza the flu HPV and varicella are all caused by viruses that invade the body question 26 what is the name of the appendages that receive communication from other cells a neuron B Axon C dendrite D transistor the correct answer is C dendrite appendages called dendrites are made to receive signals from neighboring cells they take the form of projections with a tree-like structure that are triggered by other neurons and carry the electrochemical charge to the cell body or more rarely directly to the axons question 27 carbohydrates are broken down in the digestive system where does this process begin a the stomach B the esophagus see the mouth D the small intestine the correct answer is C the mouth when you chew food salivary amylase is produced which triggers the start of digestion all food begins the digestion process in the mouth question 28 which of the following is not a function of the kidneys a houses urine B produce vitamin D C cleanse the blood D release a lithopoietin the correct answer is a houses urine the kidneys do not house or store urine instead they release urine to be excreted the part of the urinary system that stores urine is the bladder question 28. after blood leaves the right ventricle where does it travel to next a pulmonary artery B pulmonary vein C left ventricle D left atrium the correct answer is a pulmonary artery blood is driven into the pulmonary artery through the pulmonary semilunar valve and the right ventricle contracts it then moves on to the lungs the pulmonary veins allow the blood to escape the lungs after receiving oxygen there question 30 a person is Blood Type O Negative what blood type may this person receive blood from a a b negative B A negative C O Negative D be negative the correct answer is C O Negative while O negative people could donate blood to anyone Universal donors they can only receive blood from other O Negative individuals these individuals are in high demand because of their ability to donate blood to anyone question 31 what is the name of the tissue that separates the lower ventricles of the heart a interventricular septum B myocardium C pericardium D visceral pericardium the correct answer is a interventricular septum the strong wall dividing the ventricles the hearts lower Chambers from one another is known as the interventricular septum when there is a hole or defect in the IVs different congenital cardiac diseases can occur question 32 what type of muscle is myocardium heart muscle a striated B smooth C skeletal d flat the correct answer is a striated skeletal muscle smooth muscle and cardiac muscle are the other kinds of muscular tissues found in vertebrates it is a striated involuntary muscle that makes up the majority of the heart's wall question 33 what uses mechanisms that direct impulses toward a nerve cell's body a monocytes B dendrite C axons D nuclei the correct answer is B dendrite incorporating synaptic inputs and deciding how much an action potential is generated by a neuron are both tasked at dendrites are crucial for the branching protoplasmic extensions of a nerve cell known as dendrites transmit the electrochemical stimulus from neighboring neural cells to the cell body question 34 which of the following is not an action that the endocrine system is responsible for a blood glucose control B hormone release C regulates hormones D absorbing fats from digestive system the correct answer is D absorbing fats from digestive system the lymphatic system is responsible for absorbing fats from the digestive system the endocrine system is responsible for many actions all of which include blood glucose control hormone release and regulation of hormones question 35 which of the following is not part of the lymphatic system a tonsils B spleen C appendix D pancreas the correct answer is D pancreas a crucial part in transforming the food we eat into energy for the body's cells is played by the pancreas there are two primary uses for the pancreas it contains endocrine functions that control blood sugar and an extra connectivity that aids in digestion question 36 the atomic number is the same as a number of protons B number of neutrons C binding energy D velocity the correct answer is a number of protons the periodic system in which the elements are grouped in order of increasing numbers of protons in the nucleus uses the atomic number to identify a chemical element the atomic number is also the quantity of protons in the neutral atom which is always equal to the quantity of electrons question 37 which term describes the destruction of red blood cells a erythropoiesis be hemolysis C gliosis D hemolosis the correct answer is B himolysis hemolysis is the term for the breakdown of red blood cells question 38 which of the following is not part of the appendicular skeleton a scapula B pelvic bone C ulna D temporal the correct answer is D temporal the skull's bones including the temporal bone the vertebral column the ribs and the sternum make up the axial skeleton the bones making up the hip and shoulder girdles as well as the bones of the arm and legs such as the ulna are all part of the appendicular skeleton I.E fibula question 39 the process of blank involves the movement of water molecules from a solution containing a high concentration of water molecules to one containing a lower concentration through the partially permeable membrane of a cell a photosynthesis B glycolysis c lysolysis d osmosis the correct answer is D osmosis the process of osmosis involves the movement of water molecules from a solution containing a high concentration of water molecules to one containing a lower concentration through the partially permeable membrane of a cell question 40 what is the term for the tissue in which gas exchange takes place in the lungs a bronchioles b larynx C alveoli D trachea the correct answer is C alveoli the lungs many small air sacs known as alveoli enable quick gaseous exchange thank you for watching this video we hope you enjoyed it check out these other videos that can help you with your future studies don't forget to resuscitate the like button and subscribe to our Channel and please share this video with your fellow nursing friends

Channel: All Healthcare Careers

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Keywords: teas 7 science, teas science, teas science practice test, teas 7 science practice test

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Length: 21min 55sec (1315 seconds)

Published: Mon Feb 27 2023