TEAS 7 Science Practice Test: Contains 100 Questions and Answers

TEAS Science Practice Test 1.) According to Mendel’s first law, what does an individual gamete contain? a.) A gene. b.) A pair of genes. c.) One allele of a gene. d.) A pair of alleles of the same gene. . 2.) Whic ...

TEAS Science Practice Test 1.) According to Mendel’s first law, what does an individual gamete contain? a.) A gene. b.) A pair of genes. c.) One allele of a gene. d.) A pair of alleles of the same gene. . 2.) Which of the following is both an exocrine and endocrine gland? a.) Adrenal Glands b.) Liver c.) Thyroid Gland d.) Parathyroid Glands . 3.) An atom’s physical structure is composed of which of the following? a.) A nucleus & electrons b.) A nucleus & orbits c.) Protons & neutrons d.) A nucleus & protons . 4.) Growth factors and histamine are chemical agents released in small amounts that act locally on neighboring cells. Which of the following best describes the function of growth factors and histamine? a.) Endocrine function b.) Autocrine function c.) Paracrine function d.) None of the above . 5.) Which hormone increases basal metabolic rate in the body? a.) Parathyroid hormone b.) Thyroid hormone c.) Glucagon d.) Secretin . 6.) Which of the following hormones would be expected to increase if you were studying all day for a test and skipped breakfast & lunch? a.) Calcitonin b.) Insulin c.) Glucagon d.) Growth Hormone . 7.) Hormones travel through the bloodstream and bind to receptors located on target cells. Which of the following would NOT bind to transmembrane proteins on the target cells? a.) Antidiuretic Hormone b.) Prolactin c.) Insulin d.) Estrogen 8.) A weak bond in DNA often includes a(n) ____ atom? a.) Oxygen b.) Nitrogen c.) Thymine d.) Hydrogen 9.) Which of the following produces NADH and FADH2 for the electron transport chain during cellular respiration? a.) Metabolism b.) Glycolysis c.) Metabolic pathways d.) Krebs Cycle 10.) Why is it important to replicate DNA before a cell divides in mitosis? a.) for genetic information to be transferred into daughter cells. b.) for the cell to be able to increase in size. c.) for the DNA to be contained in the nucleus. d.) for the cell to re-order the DNA sequencing in the new cells. 11.) In a cell, movement of molecules from an area of low concentration to an area of high concentration…? a.) uses facilitated diffusion b.) requires cellular energy c.) needs associated (peripheral) proteins d.) requires no energy Correct answer: b. 12.) The function of the central vacuole in plant cells include _____. a.) Storing food. b.) Storing waste products. c.) Maintaining the right amount of pressure to support the plant structure. d.) All the above. 13.) The thoracic cage is a structural unit important for __. a.) digestion b.) menstruation c.) respiration d.) secretion of wastes . 14.) Salivary amylase secreted into the oral cavity starts the digestion of _____. a.) starch b.) proteins c.) amino acids d.) lipids 15.) The ____ holds the replicated sister chromatids together? a.) centriole b.) chromosomes c.) centromere d.) cycles . 16.) Which two hormones does the anterior pituitary secrete? a.) growth hormone and glucagon b.) oxytocin and melatonin c.) growth hormone and luteinizing hormone d.) luteinizing hormone and epinephrine . 17.) The cardiovascular system transports ______. a.) Hormones b.) All of the above c.) Lymph d.) Red blood cells . 18.) In addition to the genitourinary system, the kidneys are related to which of the following systems? a.) cardiovascular b.) reproductive c.) digestive d.) none of the above 19.) Which hormone aids in a positive feedback response? a.) insulin b.) glucagon c.) melatonin d.) oxytocin 20.) _____ are long bundles of axons that transmit signals from the neuromuscular system allowing involuntary and voluntary muscle movement? a.) sarcomeres b.) nerves c.) cell body d.) dendrites . 21.) The exchange of nutrients between tissue & blood primarily occurs in which of the following locations? a.) capillaries b.) bone c.) large arteries d.) none of the above 22.) What type of immunity is blood transfusion? a.) passive natural immunity b.) active artificial immunity c.) passive artificial immunity d.) active natural immunity . 23.) What type of muscle is the uterus? a.) skeletal b.) smooth c.) cardiac d.) irregular . 24.) Which cells within the pancreas release glucagon in response to low blood glucose levels? a.) Alpha cells b.) Beta cells c.) Leukocytes d.) Erythrocytes 25.) Which describes the shape of a skeletal muscle cell? a.) Elongated b.) Branched c.) Short d.) Spindle 26.) What structure is the integration center between the endocrine and nervous systems? a.) pons b.) spinal meninges c.) hypothalamus d.) pituitary . 27.) What body system is the skeletal system most closely associated with when hematopoiesis happen? a.) Cardiovascular system b.) Digestive system c.) Muscular system d.) Urinary System 28.) The type of muscle that is involuntary and is found in the heart and can also be described as striated is called? a.) skeletal b.) cardiac c.) smooth d.) neuron . 29.) What does the replication of DNA during interphase ensure? a.) that crossing-over occurs prior to cell division. b.) mutations are corrected before the cell divides. c.) genetic variation is created in daughter cells. d.) each daughter cell gets an exact copy of the cell’s DNA. 30.) Lower motor neurons (motoneurons) that exit the spinal cord to stimulate skeletal muscle contraction are activated by all of the following influences except: a.) sensory feedback from the muscles and tendons b.) firing of autonomic motor neurons to skeletal muscles c.) excitatory effects from higher motor neurons d.) inhibitory effects from higher motor neurons . 31.) Which of the following structures is located in the axial skeleton and lined with mucus membrane? a.) sinus b.) mandible c.) sternum d.) hyoid bone 32.) Mineral resorption is caused by which of the following? a.) osteoclasts b.) hydroxyapatite c.) osteoblasts d.) osteoporosis 33.) Secreted by the heart to increase sodium secretion by the kidneys, decrease extracellular fluid (decreases BP)? a.) ACTH (adrenocorticotropic hormone) b.) ANP (Atrial Natriuretic Peptide) c.) Epinephrine and Norepinephrine d.) T3 (Triiodothyronine) and T4 (Thyroxine) . 34.) Bone healing steps: 1. Fibroblasts secrete matrix forming cartilage for new bone to build off if. 2. Inflammation and clotting. 3. Osteoblasts will secrete new bone spindle, where osteocytes will maintain the bone. 4. Clasts will dissolve cartilage and replace it with bone. Which order is correct? a.) 4, 3, 1, 2 b.) 2, 1, 3, 4 c.) 2, 1, 4, 3 d.) 1, 2, 3, 4 . 35.) Cholecystokinin is a production of? a.) Bile Salts b.) Blood c.) Gastric juice d.) Iron 36.) (T4) Thyroxine is secreted by what Gland? a.) Pineal b.) Parathyroid c.) Thyroid d.) Pituitary . 37.) During the Krebs Cycle of cellular respiration, glucose molecules are consumed. For every single consumed glucose molecule, what is produced? a.) Six carbon-dioxide molecules and six NADH molecules. b.) Six ATP molecules, six carbon-dioxide molecules, and six NADH molecules. c.) Two ATP molecules, six carbon-dioxide molecules, and six NADH molecules. d.) Two ATP molecules and six carbon-dioxide molecules. . 38.) Tiny air-sacs in the lungs where the exchange of O2 and CO2 takes place are known as which of the following? a.) Bronchioles b.) Bronchi c.) Larynx d.) Alveoli 39.) Atoms are made up of all EXCEPT which of the following? a.) Protons b.) Neutrons c.) Isotopes d.) Electrons . 40.) The pH scale ranges from 0 to 14, where 0 is more _____ and 14 is more ______? a.) Basic , Acidic b.) Acidic , Neutral c.) Basic , Neutral d.) Acidic , Basic 41.) Cells with a high rate of protein synthesis generally have a large number of which of the following cellular structures? a.) Ribosomes b.) Golgi Apparatus c.) Mitochondria d.) Chloroplasts Correct answer: a. 42.) Hair and nails are a part of which body system? a.) Skeletal system b.) Neuromuscular system c.) Integumentary system d.) Immune system . 43.) The mitral valve is a heart valve that allows oxygen-rich blood from the lungs pass from which of the following? a.) The left atrium into the left ventricle. b.) The left ventricle into the aorta. c.) The right ventricle into the pulmonary veins. d.) The right atrium into the right ventricle. 44.) In mitosis, the two resulting daughter cells are..? a.) different from the parent cell & identical to each other. b.) different from the parent cell & different from each other. c.) identical to the parent cell & different from each other. d.) identical to the parent cell & identical to each other. 45.) The parathyroid gland is an endocrine system gland located behind the thyroid gland. What does the parathyroid gland help the body control? a.) metabolism b.) calcium & phosphorus levels c.) carbohydrate & fat utilization d.) blood sugar . 46.) To which system does cartilage belong? a.) skeletal b.) integumentary c.) respiratory d.) neuromuscular 47.) Which of the following is the sphincter muscle that regulates the movement of chyme into the small intestine? a.) esophageal b.) pyloric c.) ileocecal d.) urethral . 48.) Which of the following structure is severed and tied off as part of a vasectomy procedure? a.) seminal vesicle b.) vas deferens c.) epididymis d.) testes . 49.) _____ gland secretes follicle-stimulating hormones? a.) Parathyroid gland b.) Pineal gland c.) Anterior Pituitary gland d.) Thyroid gland . 50.) Function of PORES and molecular membrane is? a.) activating transcription factors. b.) permitting passage of molecules c.) preventing the molecules from overheating d.) blocking pathogens from entry . 51.) The “fight or flight response” is a function of the peripheral nervous system. Is this True or False? a.) True b.) False 52.) An overactivation of which of the following could lead to osteoporosis? a.) Osteon b.) Osteoblast c.) Osteoclast d.) Osteocyte . 53.) Which of the following can digest an enzyme? a.) Endonucleases b.) Lipases c.) Proteases d.) Kinases . 54.) Which of the following is NOT classified as a synovial joint? a.) Femur & Pelvis b.) Skull Bones c.) Humerus & Ulna d.) Humerus & Scapula . 55.) A macrophage, a type of immune cell responsible for phagocytosis and digesting pathogens, is likely to contain more of which of the following organelles? a.) Mitochondria b.) Centrosomes c.) Ribosomes d.) Lysosomes 56.) A buildup of urea, a nitrogenous waste product of protein metabolism in the body, is most likely due to the failure of which organ system? a.) Urinary b.) Endocrine c.) Digestive d.) Immune 57.) Which of the following cells type is responsible for secreting acid to dissolve the bony matrix? a.) osteoclasts b.) canaliculi c.) endosteum d.) 0steoblasts 58.) _________ are substances that protect the skin from ultrasound radiation? a.) Melanin b.) Kerantin c.) Seburm d.) Dermis 59.) The hormone that stimulates the kidney to retain sodium ions, which draw with them water, when BP drops is called? a.) Luteinizing b.) FSH c.) insulin d.) aldosterone 60.) What is a series of events that a cell goes through as they grow & divide? a.) cell division b.) cell cycle c.) cytokinesis d.) mitosis . 61.) Drugs that increase urine production by blocking the release of ADH is called? a.) nephritis b.) filtration c.) diuretics d.) osmoreceptors . 62.) The erythrocyte of blood do which of the following? A- Initiate the blood clotting mechanism B- Transport Oxygen and some carbon dioxide C- Initiate the conduction system of the heart D- Defend the body against pathogens . 63.) When does the nuclear division of somatic cells take place during cellular reproduction? a.) meiosis b.) cytokinesis c.) interphase d.) mitosis 64.) The gland in the neck that secretes hormones that regulate growth, development, & metabolic wastes? a.) thyroid gland b.) cartilage c.) pineal gland d.) adrenal gland Correct answer: a. 65.) Which of the following is exchanged between two or more atoms that undergo ionic bonding? a.) electrical charges b.) valence electrons c.) transitory electrons d.) neutrons . 66.) What is the longest phase of the cell cycle? a.) interphase b.) prophase c.) anaphase d.) metaphase 67.) Where does a cell contain its genetic material? a.) nucleus b.) nucleolus c.) cytoskeleton d.) golgi 68.) Prokaryote & eukaryote cells are similar in having which of the following? (SELECT ALL THAT APPLY) a.) membrane-bound organelles b.) presence of a nucleus c.) integral membrane proteins in the plasma membrane d.) DNA & d. 69.) What are groups of cells that perform the same function called? a.) tissues b.) plastids c.) organs d.) molecules 70.) The rate of a chemical reaction depends on all of the following except ____? a.) presence of catalysts b.) surface area c.) amount of mass lost d.) temperature . 71.) Which of the answer choices provided best defines the following statement? For a given mass & constant temperature, an inverse relationship exists between the volume and pressure of a gas. a.) Stefan-Boltzmann Law b.) Boyle’s Law c.) Charles’ Law d.) Ideal Gas Law . 72.) The adrenal glands are part of the ____? a.) endocrine system b.) immune system c.) respiratory system d.) emphatic system 73.) What is the role of ribosomes? a.) storage b.) transport c.) waste removal d.) protein synthesis 74.) If a cell is placed in a hypertonic solution, what will happen to the cell? a.) it does not affect the cell. b.) it will shrink. c.) it will swell. d.) it will stay the same. . 75.) Which group of major parts & organs make up the immune system? a.) heart, veins, arteries, & capillaries. b.) brain, spinal cord, & nerve cells. c.) lymphatic system, spleen, tonsils, thymus, & bone marrow. d.) nose, trachea, bronchial tubes, lungs, alveolus, & diaphragm. . 76.) Which of the following correctly lists the cellular hierarchy from the simplest to the most complex structure? a.) tissue, cell, organ, organ system, organism b.) cell, tissue, organ, organ system, organism c.) organism, organ system, organ, tissue, cell d.) none of the above . 77.) During what phase of the cell cycle is DNA replicated? a.) S phase b.) G1 phase c.) G2 phase d.) M phase 78.) The first set of seven vertebrae that form the neck; also known as C1 - C7. a.) cervical vertebrae b.) dendritic cell c.) clavicle d.) sternum 79.) A molecule that can bond to identical molecules to form a polymer is called? a.) monomers b.) organic molecule c.) antigen d.) sarcomere Correct answer: a. 80.) A toxin that stimulates an immune response in the body? a.) ghrelin b.) barrier c.) enzymes d.) antigen 81.) The hormone that stimulates male SECONDARY sexual characteristics? a.) FSH b.) Melatonin c) Testosterone d.) Oxytocin . 82.) Following the ingestion of a fatty meal, what hormone is secreted by the duodenum mucosa to stimulate contraction of the gallbladder? a.) Calcitonin b.) Cholecystokinin c.) Insulin d.) Glucagon . 83.) A substance that increases the rate of a chemical reaction without undergoing permanent chemical change is called? a.) enzyme b.) catalyst c.) hormone d.) plasma . 84.) The stage of the heart cycle in which the heart muscle contracts & the chambers pump blood? a.) diastole b.) pericardium c.) SA node d.) systole 85.) An enzyme that regulates arterial blood pressure is called? a.) amylase b.) maltase c.) catalase d.) renin 86.) The amount of air that is inhaled & exhaled during normal breathing? a.) vital volume b.) residual volume c.) tidal volume d.) maximal exhalation . 87.) Long bone function is to? a.) support the weight of the body & facilitate movement. b.) protect internal organs such as the heart & brain. c.) provide stability & movement, such as carpals of the wrist. d.) none of the above. Correct answer: a. 88.) Which layer of the skin contains hair follicles, sweat glands, and nerves? a.) the basal layer b.) the subcutaneous layer c.) the epidermis d.) the dermis 89.) Sickle-cell anemia is an autosomal recessive disorder. Knowing this information, what are the chances that a child will NOT have the recessive allele if both of his parents are carriers? a.) 50% b.) 25% c.) 75% d.) 100% . 90.) What set of signals is the vagus nerve responsible for conveying? a.) signals from abdominal organs b.) balance signals from the inner ear c.) signals from the eye d.) signals from the jaw 91.) Simple covalent compounds show which of the following properties? a.) they are soluble in organic solvents (ex: ethanol) b.) they have high melting & boiling points c.) they are solids at room temperature d.) they conduct electricity when dissolved in water 92.) Which of the following is FALSE regarding blood cells? a.) WBCs are larger & less abundant than RBCs b.) Phagocytes & lymphocytes are the most numerous types of WBCs. c.) Mature RBCs are bi-concave discs that have a nucleus & long life-span. d.) Mature RBCs are oval, bi-concave discs that have extruded their nucleus. . 93.) Follicle-stimulating hormone (FSH) is produced by which gland in the body? a.) posterior lobe of the pituitary gland b.) pineal gland c.) anterior lobe of the pituitary gland d.) thyroid gland . 94.) The autonomic nervous system can be divided into two branches, the sympathetic and parasympathetic division. TRUE or FALSE, the parasympathetic nervous system is responsible for “fight or flight”? a.) TRUE b.) FALSE . 95.) Food moves in the gastrointestinal tract by which of these processes? a.) peristalsis of the voluntary muscles b.) voluntary muscle movements c.) peristalsis of the circular & longitudinal muscles d.) voluntary movements of the longitudinal muscles only . 96.) Which structure is NOT part of the rib cage? a.) the lumbar vertebrae b.) the thoracic vertebrae c.) sternum d.) costal cartilage 97.) Progesterone is produced by the _________? a.) pituitary gland b.) thyroid glands c.) ovaries, placenta, & adrenal glands d.) none of the above . 98.) In the collecting duct, what is reabsorbed? a.) Ions such as Na+ & Clb.) Nutrients like glucose & amino acids c.) substances like drug metabolites & waste d.) water 99.) 0.7% NaCl is isotonic to RBCs. Which of these describes what would happen to the RBCs if placed in a 7.0% solution instead? a.) The cells exposed to the solution will burst. b.) The cells exposed to the solution will shrink. c.) The cells will remain the same size. d.) The cells exposed to the solution will expand but not burst. Correct answer: b. 100.) How does the glomerulus filter blood into the Bowman’s capsule? a.) high pressure b.) concentration gradient c.) active transport d.) passive transport Correct answer: a.