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ATI TEAS 7 SCIENCE TEST Exam 2022/2023 with
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Mg(OH)2 + HCl -> The equation above is unbalanced. Which of the following shows the molar products of the neutralization reaction after balancing? A. 2MgCl2 + H2O B. 2MgCl2 + 2H2O C. MgCl2 + H2O D. MgCl2 + 2H2O - answerD. MgCl2 + H2O H+ + HCO3- <-> H2O + CO Based on the equation above occurring in blood, which of the following would result if the reaction is moving in a forward direction? A. Blood pressure will decrease B. The blood will become more acidic C. The blood will become more basic D. Proton concentration will increase - answerC. The blood will become more basic Which of the following is the collagen-rich material that connects muscles to bones? A. Tendon B. Ligament C. D. Reticular Tissue E. Areolar Tissue - answerA. Tendon Which of the following is the function of the spleen in a healthy adult human? A. It stores bile produced in the liver B. It synthesizes platelets C. It degrades aged red blood cells D. It is a vestigial organ - answerC. It degrades aged red blood cells
Which of the following is the circular muscle that regulates the opening and closing of a body aperture? A. Fossa B. Fascia C. Sphincter D. Valve - answerC. Spincter Which of the following is a type of specialized antigen-processing cell that activates T-cells of the immune system? A. Plasma Cells B. Thrombocytes C. Dendritic Cells D. Eosinophils - answerC. Dendritic Cells Which of the following causes lactic acid to build up in muscle cells? A. The lack of oxygen leading to increased fermentation B. An excess of carbon dioxide redirected to make lactic acid C. The decrease in glucose supply to the muscle D. An increase in blood supply to the muscle - answerA. The lack of oxygen leading to increased fermentation Students have collected 60 pill bugs and are interested in how they behave. The students mark a line down the enter of six shallow dishes. Then, they place 10 pill bugs in each dish, give in each half. They scatter the same amount of food evenly throughout each container and spray the same amount of water into each of the dishes. Finally, they cover one half of each container with
B. Molecules are widely separated in a regular pattern with no molecular motion C. Molecules are widely separated in a random pattern and vibrate freely at high speeds D. Molecules are tightly packed in a regular pattern and do not slide past one another - answerA. Molecules are packed closely with no regular arrangement and vibrate with constant rapid motion Which of the following is improved when repeated trials of an experiment have constant results? A. Reliability B. Validity C. Independent Variables D. Dependent Variables - answerA. Reliability What happens when a skeletal muscle is in a relaxed state? A. Ca2+ is released into the cytosol of the muscle cell B. Myosin forms cross bridges with actin filaments C. Tropomyosin covers myosin-binding sites D. E. ATP binds to myosin heads - answerC. Tropomyosin covers myosin-binding sites A patient who has a mutation that causes type 1 diabetes mellitus is trying a therapy that will use their own stem cells to restore their insulin production. Before their stem cells can be used for therapy, which of the following should be done? A. The stem cells should be inactivated with UV radiation B. A normal gene should be supplied in place of the defective one before therapy C. The patient should be counseled about passing on genetically altered cells to offspring
D. The patient should be tested to ensure that their body will not reject the stem cell - answerB. A normal gene should be supplied in place of the defective one before therapy Which of the following pairs of endocrine glands are linked by a venous blood portal system? A. Liver and pancreas B. Hypothalamus and anterior pituitary C. Pancreas and spleen D. Anterior pituitary and thyroid - answerB. Hypothalamus and anterior pituitary Which of the following hormones is released in response to a drop in blood pressure? A. Melatonin B. Somatostatin C. Oxytocin D. Aldosterone - answerAldosterone Damage to which of the following sites will most likely result in the stunted growth of a prepubescent child? A. Physis B. Shaft C. Periosteum D. Endosteum - answerA. Physis Which of the following anatomical planes divides the body into superior and inferior position? A. Sagittal
Which of the following bones is the large fused bone of the upper jaw that contains teeth? A. Mandible B. Maxilla C. Vomer D. Clavicle - answerB. Maxilla A sketch of a leaf was made on 1cm graph paper. Which of the following values is a best estimate of the surface area of the top of the leaf? A. 30cm B. 30cm^ C. 42cm D. 42cm^2 - answerB. 30cm^ To determine SA using grid paper, count the number of squares that are completely within the tracing of the lead and estimate the number of squares that are partially covered by the tracing. Approximately 20 boxes are covered fully by the tracing. Estimating the squares that are partially covered by the tracing would bring total surface area closer to a value of 30cm^2 rather than 42cm^ Plants return water from their leaves to the atmosphere as water vapor. What is the name of this process? A. Sublimation B. Transpiration C. Accumulation D. Condensation - answerB. Transpiration Three liquids are being studied. Samples of liquid 1 and liquid 2 are placed in a container together. Liquid 1 rises to the top. Another sample of liquid 1 is placed in a different container together with liquid 3. This time, liquid 3 rises to the top. If all three liquids are layered in one container, which of the following would be the correct order of the liquid from the bottom to the top? A. 2,3, B. 3,2, C. 1,3,
D. 2,1,3 - answerD. 2,1, Which of the following statements best explains why RNA inside a cell is almost never found as a single-stranded molecule? A. Alleles for genes are found in pairs, so their RNAs also pair up B. RNA normally exists with its complementary strand in a double helix C. RNA and DNA form hybrid pairs for all transcribing parts of the chromosome D. Short stretches of complementary sequences can cause RNA to fold back on itself - answerD. Short stretches of complementary sequences can cause RNA to fold back on itself Which of the following is part of the large intestine? A. Duodenum B. Rectum C. Ileum D. Jejunum - answerB. Rectum Which of the following fetal tissues contributes to the formation of the placenta? A. Hematopoietic cells B. Embryonic yolk sac C. Fetal chorionic tissue D. Fetal muscle tissue - answerC. Fetal chorionic tissue Which of the following cells rid the body of dust and other particles that enter the lungs? A. Alveoli B. Macrophages C. Sertoli Cells D. Erythrocyes - answerMacrophages Which of the following chemicals is a mineral that provides mechanical strength and is found in teeth and bones? A. Sodium chloride B. Calcium carbonate
A. B antigens on the outer surface of the receptor's blood cells will cause their red blood cells to clump B. Antibodies against blood type B will be produced in the recipient's blood plasma C. Existing antibodies against blood type A in the recipient's blood plasma will cause red blood cells to clump D. People who have blood type A can receive blood type B with no reaction - answerB. Antibodies against blood type B will be produced in the recipient's blood plasma Which of the following statements describes an ion of the isotope Aluminum-27? 13 Al
A. The ion has 13 neutrons B. The atom has a mass number of 14 C. The ion has an electric charge of + D. The atom has 27 electrons - answerc. The ion has an electric charge of + The innermost lining of the digestive tract is largely comprised of which of the following? A. Serous membrane B. Stratified squamous epithelium C. Smooth muscle D. Mucous membrane - answerD. Mucous membrane Adipose tissue is stored in which of the following layers of the skin? A. Epidermis B. Dermis C. Hypodermis D. Dermal papillae - answerC. Hypodermis Which of the following hormones requires iodine for its production? A. Thyroid hormones
B. Melatonin C. Parathyroid hormone D. Calcitonin - answerA. Thyroid hormones The sliding filament theory proposes that which of the following occurs during the contraction phase of muscle? A. The sarcomeres shorten B. Myosin degenerates C. Actin binds calcium ions D. ATP is produced by myosin - answerA. The sarcomeres shorten If an investigation is designed to find the rate of respiration, which of the following must be measured as the independent variable A. Time B. Mass C. Volume D. Density - answerA. Time Which of the following events describes an acquired (adaptive) immune response? A. B-cells release antibodies targeted to a bacterial pathogen B. Macrophages migrate to a site of infection to engulf pathogens C. Lysozymes digest microbial cell calls D. Complement proteins mediate reactions leading to the lysis of invading cells - answerA. B- cells released antibodies targeted to a bacterial pathogen Which of the following is an irregular bone of the throat that aids in tongue movement and swallowing? A. Stapes
D. AB and AB - answerC. AA and BB In which of the following organ does meiosis occur? -Cervix -Fallopian Tubes -Ovaries -Uterus - OVARIES While playing basketball a player injures his achilles tendon. Which of the following types of tissue was injured? - CONNECTIVE TISSUE Which of the following cells has the ability to engulf other cells? -Epithelium -Red blood cells -Mast cells -Macrophages - MACROPHAGES Which of the following is generally expected to be true about birth rates in high infant mortality? -Equal to death rates -Lower than death rates -Variable compared to death rates -Higher than death rates - HIGHER THAN DEATH RATES Which of the following is the contraction phase of cardiac cycle? -Systemic circuit -Diastole -Pulmonary circuit -Systole - SYSTOLE Which is correct regarding the pH scale? A substance with a pH of 3 is ___ times as ______ as a substance with a pH of 4. - 10 / ACIDIC In a hypertonic solution, water flows through aquaporins embedded in the plasma membrane of a cell. This type of transport is known as.. -DIFFUSION -OSMOSIS -FACILITATED DIFFUSION -ACTIVE TRANSPORT - OSMOSIS Which of the following types of bonds link base pair nucleotides within a double strand of DNA? -Covalent -Hydrogen -Ionic -Peptide - HYDROGEN Scientists rely on which of the following to provide critical feedback when revising scientific explanations? -Dogma -Peer Review -Null Hypothesis
-Opinion - PEER REVIEW Which of the following substances is excreted by sweat glands on response to the breakdown of the proteins and formation? -Lysozymes -Sebum -Water -Urea - UREA A study found two processes. Process A and Process B to be correlated. Which of the following is true for these processes? - The study does not indicate a casual relationship between the processes An efficient way to block protein synthesis is by inhibiting which of the following? -Gloxysomes -Lysosomes -Ribosomes -Apoplasts - RIBOSOMES Which of the following are the TWO major parts of the nervous system? - PERIPHERAL NERVOUS SYSTEM AND CENTRAL NERVOUS SYSTEM Blood clotting involves which of the proteins? -Trypsinogen -Fibrinogen -Hemoglobin -Albumin - FIBRINOGEN Which of the following body systems is the primary system involved in preventing an infection when a cut in the system allows bacteria in the body? - IMMUNE SYSTEM Which of the following structures in the male reproductive system secretes a fluid that nourishes and protect sperm? -Prostate gland -Urethra -Vas Deferens -Epidydimis - PROSTATE GLAND Which of the following occurs when the diaphragm contracts? - THE THORACIC CAVITY INCREASES IN VOLUME Order of nephron loop.. - Glomerulus PCT Loop of henle DCT Collecting duct Glomerulus A scientist has noted a possible relationship between a certain chemical substance found in fish and the occurrences in kidney failure of humans. Which of the following preliminary steps should the scientist take before conducting a controlled experiment? A. Establish a cause and effect relationship between the substance and the outcome
-Altered filtrate leaves the urinary system and the body - Glucose, lactate, and amino acids are reabsorbed A doctor explains to a patient that he has a pulled muscle in his back. Which of the muscles could have been injured? -Zygomaticus -Latissimus dorsi -Adductor magnus -Gastrocnemius - LATISSIMUS DORSI An equal mass which of the following states of matter could completely fill either an 100mL or 500mL container? -Liquid -Solid -Mixture -Gas - GAS Which of the following chemicals released by one type of immune cell to directly activate another type of immune cell? -Lysozymes -Perforin -Granyzymes -Citokines - CITOKINES Which of the following structures is shared by the ,ale and urinary and genital system? - In males, the URETHRA is shared by the reproductive and urinary systems. Which of the following types of membrane is associated with the skin? -Serous -Cutaneous -Synovial -Peritoneum - CUTANEOUS Which of the following is the form for the gap between two nerve cells? - SYNAPSE NAD^+ +2e- +H^+ -> NADH. Which of the following statements correctly describes the reaction above? -Single displacement of NADH -Combustion of NAD+ -Breakdown of NADH -Reduction of NADH+ - REDUCTION OF NADH+ Which of the following processes cause most of the carbon dioxide from the blood to move into the alveoli? -Passive transport using carrier proteins -Active transport using energy -Conversion to carbon monoxide -Diffusion down a concentration gradient - DIFFUSION DOWN A CONCENTRATION GRADIENT Which of the following properties of water explains its solvent abilities for certain substances?
-High surface tension -Kinetic energy of liquid water molecules -Polarity of water molecules -High specific heat - POLARITY OF WATER MOLECULES Which of the following stem cells can differentiate into the largest number of different cell types? -Pluripotent -Somatic -Unipotent -Oligopotent - PLURIPOTENT Which of the following is a function of the circulatory system? -To break down toxins -To manufacture antibodies -To produce insulin -To transport hormones - TO TRANSPORT HORMONES Which of the following hormones increase heart rate in response to stress? -Glutamate -Epinephrine -Testoterone -Insulin - EPINEPHRINE Which of the following digestive system structures release amylase? -Gallbladder -Duodenum -Salivary glands -Globet cells - Salivary Glands Which of the following is primary function of red blood cells? -Helping create blood clots -Responding to antigens -Carrying oxygen to other body cells -Fighting infection in the body - CARRYING OXYGEN TO OTHER BODY CELLS A researcher is gathering large amounts of data about patients who have a common disease and the effectiveness of various medications in comparison to placebos. Which of the following types of graphs is the best way for the researcher to represent data? -Line graph -Flow chart -Bar graph
- Pie chart - BAR GRAPH Which of the following structures of the respiratory system does the majority of gas regulatory respiratory system occur? - AVEOLI Which of the following describes how RNA and DNA are used in mitosis? -Forms spindle fibers that attach to chromosomes -Produces energy for cell division -Leads to synthesis of proteins that assist in cell respiration
Emphysema caused by damage to alveoli from toxins and pollutants is like to result in the body having difficulty performing which of the following action? -Exchanging oxygen and carbon dioxide -Releasing histamine and acetylcholine -Absorbing food -Producing enzymes - EXCHANGING OXYGEN AND CARBON DIOXIDE Which of the following pathways best represents the expected flow of blood from the human heart to an organ?
- Blood pumped from the heart first enters arteries that then narrow to form veins that deliver blood to the organ.
- Blood pumped from the heart first enters arterioles that then merge to form arteries that deliver blood to the organ
- Blood pumped from the heart first enters veins that then narrow to form venules that deliver blood to arteries of the organ.
- Blood pumped from the heart first enters arteries that then narrow to form arterioles from that deliver blood to capillaries of the organ. - Blood pumped from the heart first enters arteries that then narrow to form arterioles from that deliver blood to capillaries of the organ How much stronger is the hydrogen ion concentration oh pH 4 solution as compared with a pH 9 solution? -100,
-0. -5 - 100, which of the following digestive system structures releases sodium bicarbonate, resulting in a change in the pH chyme from acidic to basic? -Gallbladder -Appendix -Liver -Pancreas - PANCREAS Metabolism is known as which of the following types of respiration -Internal -External -Cellular -Pulmonary - CELLULAR Which of the following hormone is responsible for regulating sodium reabsorption in the kidneys? -Calcitriol -Erythropoietin -Thyroxine -Aldosterone - ALDOSTERONE A student conducts an experiment in which he dissolves 1.0 grams each of several substances in 50 millimeters of water. He has 12 identical plastic cups of water. He places 1.0 grams of salt into three of the cups, 1.0 grams of sugar into three of the cups and 1.0 grams of backing soda into three of the cups. The three remaining cups contain only water. He places all of the cups in a freezer and records the temperature of the water in each cup every 15 minutes for 4 hours. Which of the
following questions is the student most likely testing? - What effect do different concentrations of solute have on the freezing point of water? Sunlight can damage epithelial cells but limited exposure to ultraviolet radiation results in the beneficial production of which of the following? - VITAMIN D Which of the following organs releases bicarbonate as a response to the release of secretin by the duodenum? -Spleen -Liver -Pancreas -Gallbladder - PANCREAS Which of the following cellular organelles releases the energy contained in food? -Centrioles -Ribosomes -Mitochondria -Golgi Apparatus - MITOCHONDRIA Which of the following organs filters excess solutes from the blood? -Kidney -Spleen -Gallbladder -Stomach - KIDNEY Which of the following parts of the central nervous system releases chemicals that regulate the pituitary gland? -Thalamus -Hypothalamus -Spinal cord -Cerebellum - HYPOTHALAMUS Which of the following type of cells suppress immune response? -Macrphages -Plasma cells -Regulatory T cells -Neutrophils - REGULATORY T CELLS During a 56-week test 3,731 patients participated in a double-blind trial. participants did not have type 2 diabetes mellitus. one group of participants received once-daily subcutaneous injections of liraglutide at a dose of 3.0 mg. The other participants received a placebo. Both groups received counseling on lifestyle modification. At the end of the 56 weeks, the bodyweight of each participant was determined. Which of the following best indicates the question that was being investigated in the study? - what effect has liraglutide on diabetes patients A blood sample taken from a patient who has an infection can be expected to show which of the following? - ELEVATED WHITE BLOOD CELL COUNT Histones are proteins associated with which of the following? - DNA
