ATI TEAS 7 QB

1. How are carbohydrates used by the body? Choose ALL answers that apply.  structure  Communication  storage  Recognition 2. What type of immunity does a vaccine provide? Choose only ONE best answer.  naturally acquired passive immunity  Artificially acquired passive immunity  Naturally acquired active immunity  Artificially acquired active immunity 3. Which organs and/or glands are superior to the liver? Choose ALL answers that apply.  Lungs  Parathyroid gland  Kidneys  Thymus 4. Which cavity contains all of the frontal cavities? Choose only ONE best answer.  Dorsal  Thoracic  Abdominopelvic  Ventral 5. Which of the following carry oxygenated blood? Choose ALL answers that apply.  Pulmonary artery  Pulmonary vein  Aorta  Superior vena cava 6. Which of the following are disaccharides? Choose ALL answers that apply.  Sucrose  Glucose  Cellulose  Lactose 7. Which body system is responsible for the transport of dissolved oxygen from the lungs to the spleen?  Immune  Endocrine  Respiratory  Cardiovascular 8. Which condition can lead to blood clots and stroke?  Aneurysm  Arrhythmia  Asthma  Hypertension 9. A botanist wants to determine if environmental temperature affects root growth. In her experiment, she creates 4 rooms at temperatures that vary by 5 degrees F. Each room gets 20 seedlings of the same species, which she grows on agar plates for 60 days. Once a day, she measures the length of each seedling's root. At the end of 60 days, she compares the length of the roots with the room temperature. She finds the room with the lowest temperature produced the longest roots. What is the independent variable in this study?  Temperature  Seedlings  Light  Root length 10. Which of the following can act as enzymes in the body?  Globular proteins  Lipase  Amylase  Glucagon 11. Which of the following is the carbohydrate monomer?  Disaccharide  Lactose  Monosaccharide  Thymine 12. Which of the following are true about water?  Water has polar covalent bonds.  Water has a neutral pH of 7.  Water has a low specific heat capacity.  Water as a solid is less dense than water as a liquid. 13. Hydrophobic proteins often provide which function in the body?  Digestive enzymes  Provide structure  Carry oxygen molecules  Store energy 14. Which of the following have a smaller genetic scale than a chromosome?  Genome  Gene  DNA  All of the above 15. What best measures the volume of a solid?  Triple beam balance  Measuring wheel and mathematical formula  Graduated cylinder  Measuring wheel 16. What cavities are in the ventral cavity of the human body?  Thoracic Cavity  Abdominal Cavity  Cranial Cavity  Pelvic Cavity 17. Which is the largest part of the airway?  Alveoli  Bronchi  Bronchioles  Trachea 18. Which of the following is an effect of high blood pressure?  Smoking  Excessive dietary salt  Renal vessel damage  Older age 19. What is the monomer for nucleic acids?  Nucleotide  Amino acid  Phosphate group  Ribosome 20. Consider the graph which represents a botanist's data of root growth. What is the independent variable?  Temperature  Root tissue  Light exposure  Root length 21. What type of tissue protects the respiratory system's trachea?  Bone  Cartilage  Collagen  Keratin 22. Which of the following are examples of covalent bonds?  H₂O  NaCl  C₆H₁₂O₆  MgO  23. Which of the following is an example of Mendelian inheritance?  Incomplete Dominance  Polygenic Alleles  Combination Inheritance  Recessive Inheritance 24. Which of the following are globular proteins?  Antibody  Enzyme  Hemoglobin  Keratin 25. What type of bond connects amino acids?  Covalent  Peptide  Ionic  Hydrogen 26. What is the name for a microorganism that lives on or in the human body and normally causes no disease or harm?  Bacteria  Commensal Microorganism  Microorganism  Host 27. of the following infectious diseases can be caused by a viral infection?  COVID-19  Varicella  Mumps  Measles 28. You are a nursing student and are triaging a patient. Which of the following is an example of quantitative data you can gather?  The patients say he feels pain.  The patient says he has stabbing pain in his right lower abdomen.  The patient's temperature is 101.7 degrees F.  The patient reports that he had a fever yesterday 29. Which of the following are examples of steroids in the human body?  Cholesterol  Testosterone  Cortisol  Estradiol 30. What of the following factors influence the rate of a chemical reaction?  Temperature  Pressure  Concentration of reactants and substrate  Any catalysts 31. Which of the following infectious diseases can be caused by bacteria?  Tuberculosis  Cholera  Varicella  Influenza 32. During which of the following stages does crossing over occur?  Mitosis Prophase  Meiosis Prophase I  Meiosis Prophase II  Interphase 33. Which of the following is correct based on anatomical terms?  The shoulder joint is proximal to the neck.  The elbow joint is superior to the shoulder.  The thoracic vertebrae are superior to the cervical vertebrae.  The thumb is on the lateral aspect of the hand. 34. Which of the following is a genetic condition that affects the respiratory system?  Asthma  Cystic fibrosis  Mycosis  Surfactant Deficiency 35. A particular atom is uncharged, and it has an electron configuration of 1s2 2s2 2p⁶ 3s2 and a mass number of 14. How many protons does it have?  14  6  8  12 36. Which of the following describes the term allele?  A base-pair substitution in DNA  An inheritable variation of a gene  A grouping of various genes  Variations of complementary base pairs 37. Which of the following is part of the cardiovascular system?  Blood vessels  Brain  Kidneys  Lungs 38. Which of the following are possible effects of obesity?  Reduced exercise  Joint and body pain  Hypertension  Diabetes 39. Which of the following factors does not strengthen a scientific argument?  Lack of bias.  Extensive use of qualitative research and data.  Able to be reproduced and repeated by others.  Withstands the test of time 40. Which of the following are functions of the kidneys?  Make urine and maintain water homeostasis  Help maintain blood pressure  Synthesize Vitamin D  Filter blood of salt, nutrients, water, and waste 41. Which of the following correctly orders the layers of the epidermis from most superficial to deepest?  S. spinosa, S. Basale, S. corneum, S. granulosum, S. lucidum  S. corneum, S. lucidum, S. granulosum, S. spinosum, S. Basale  S. corneum, S. spinosum, S. Basale, S. granulosum, S. lucidum  S. Basale, S. spinosum, S. granulosum, S. lucidum, S. corneum 42. What of the following statements is true about an allergic reaction?  An allergic reaction, like hives or wheezing breath, is the result of overactive body systems like the integumentary system and respiratory system.  An allergic reaction is a function of overactive B-cells in the body, which release various immunoglobulins.  An allergic reaction is a function of overactive mast cells in the body, which are stimulated by Immunoglobulin E.  An allergic reaction involves proteins like histamine, keratin and collagen. 43. Alkali metals are in which group of the periodic table?  Group 1  Group 2  Group 7  Group 8 44. Which term refers to a molecule of DNA and structural protein?  Lysosome  Centrosome  Chromosome  Genome 45. If Silicon (Si) has an atomic mass of 28.1 AMU (atomic mass units), which of the following is the most likely number of neutrons an atom of Silicon would have?  28.1  14  28  14.2 46. Which neuromuscular system controls voluntary movement?  Autonomic  Somatic  Sympathetic  Parasympathetic 47. Which of the following is another name for a sweat gland?  Ceruminous  Sebaceous  Sudoriferous  Integumeous 48. Which of the following is another name for the voice box?  Alveoli  Larynx  Trachea  Pharynx 49. Which term refers to the relaxation of heart muscle?  Diastole  Systole  Asystole  Cardiastole 50. What is located in the skin's dermis?  Blood vessels  Nerve endings  Collagen  Melanocytes 51. Fat is primarily digested in the _________, and protein is primarily digested in the _____________.  mouth; stomach  stomach; small intestine  small intestine; small intestine  small intestine; stomach 52. Which of the following produces the first heart sound ("lub")?  The closing of the aortic and pulmonary valves  The closing of the tricuspid and mitral valves  The opening of the aortic and pulmonary valves  The opening of the tricuspid and mitral valves 53. Following the scientific method, which steps would be done before gathering qualitative data?  Communicate with a scientific journal  Define the problem  Develop a hypothesis  Categorize data for statistical analysis 54. Which hormone is released by the pituitary?  Estrogen  Luteinizing Hormone  Progesterone  Testosterone 55. Which of the following does not describe a general trait of macromolecules?  They can be single chains.  They can be branched.  They all contain carbon, hydrogen, and phosphorus.  They all are used by the body. 56. The kidneys reabsorb water, salts, and nutrients and return them to the body through which structure?  Renal artery  Renal vein  Nephron  Glomerulus 57. Which of the following best describes a group of cells working together?  Organelle  Tissue  Organ  Organ system 58. If a patient had a heart attack and tissue in the left ventricle lost blood flow, what would you most expect to happen?  Blood would not flow from the lungs.  Blood would back up in the legs.  Blood would not be pumped to the body.  Blood would not be oxygenated. 59. Which of the following immune cells are part of the innate immune response?.  B-cells  Cytotoxic T-cells  Natural Killer Cells  Antigen-Presenting Cells 60. Which hormone is released by the ovaries to mature an egg?  Estrogen  Luteinizing Hormone  Progesterone  Testosterone 61. Which of the following are examples of positive correlation?  As rainfall increases, plant stem length slows.  As rainfall increases, roots show longer length.  When plotting a comparison of rainfall to plant length, the line trends to the lower right.  When plotting a comparison of rainfall to plant length, the line trends to the upper right. 62. Iron is a transition metal, which means it often forms a cation with a charge of what?  2- or 3-  1-  2+ or 3+  1+ 63. Which of the following is in DNA?  Uracil  Deoxyribose  Guanine  Phosphate group 64. How does renin regulate blood pressure?  It signals the collecting ducts to expel more urine.  It affects the amount of water and salt stored or released by the body.  It signals the heart to reduce its systole contraction.  It relaxes blood vessels. 65. Which of the following has an acidic pH?  Lemon juice  Blood  Urine  Salt water 66. Which of the following are properties of a liquid?  High atomic attraction  Fixed volume  Low pressure  Takes shape of container 67. Which cavity is primarily lined by the peritoneum?  Abdominal  Dorsal  Ventral  Thoracic 68. A veterinarian student designs a study to examine the nutritional qualities of dog food. She believes that a grain-free diet can affect dog health. She selects 3 of the top-selling dog food brands for her study. From a local humane society, she selects several chihuahua puppies under the age of 1 year. She will track these puppies for the next year and access their health, include weight, complete blood count, and paw size. Three puppies will be fed nothing but brand #1 dog food, 10 puppies will only be fed Brand #2, and 10 puppies will only be fed Brand #3. How the researcher best improves this experiment?  The experiment should include 7 more dogs for the Brand #1 group.  The daily serving size of kibble should be controlled.  The experiment needs a clearly defined control of puppies.  All of the above are ways to improve the experiment. 69. Which of the following is changed during a scientific investigation?  The dependent variable.  The control.  The hypothesis.  The independent variable. 70. Which of the following are true about the dependent variable?  A factor that remains constant during the experiment  A factor with data typically plotted on the x-axis  A factor that is measured during an experiment  A factor with data typically plotted on the y-axis 71. Which two types of elements will most likely form an ionic bond?  Two elements that are in the same period.  Two elements that are non-metals and have p orbitals.  One element that is a transition metal with d orbitals and one element that is a metal with s orbitals.  One element that is a metal with s orbitals and one element that is a nonmetal with p orbitals. 72. Which of the following is in the pelvic cavity?  The kidneys  The colon  The bladder  The rectum 73. Water is considered a universal solvent due to its _______________.  Cohesion  Adhesion  Molarity  Dilution 74. What best measures the volume of a cube?  Triple beam balance  Measuring wheel and mathematical formula  Graduated cylinder  Measuring wheel 75. How many pairs of chromosomes are in a human cell?  46  23  64  32 76. Which of the following are true about Noble gasses?  They are non-reactive.  They are highly reactive.  They have 8 valence electrons.  They have 7 valence electrons. 77. Which of the following macromolecules will always contain nitrogen?  Fatty acid  Protein  Lipid  Carbohydrate 78. DNA has both a "sense" and "antisense" strand. What is true about the antisense strand?  It runs 5' to 3'.  It runs 3' to 5'.  It is used in replication.  It is the direction DNA is stored 79. Which of the following best defines the anatomical term medial?  Being face down  On the front of the body or limb  Near to the midline of the body  Above or on top of lungs 80. Which of the following is not a biological macromolecule?  Glycoproteins  DNA  Phospholipid  Glucose 81. Which of the following is a property of water?  Water has a neutral pH.  Water has a low specific heat capacity.  Water has polar covalent bonds.  Water can dissolve almost any solid, liquid, or gas. 82. Which of the following is the strongest scientific argument?  Scientific Hypothesis  Scientific Law  Scientific Study Conclusion  Scientific Theory 83. In which type of cell would you expect to find a high concentration of lysosomes?  Cardiac cells  Glandular cells  Immune cells  Muscle cells 84. What are the general functions of proteins in the body?  Increase reaction rates  Provide immunity  Provide transport  Provide structure 85. Which means of calculating concentration depends on pressure?  ppm  ppb  molarity  molarity, ppb, and ppm 86. A veterinarian student designs a study to examine the nutritional qualities of dog food. She believes that a grain-free diet can affect dog health. She selects 3 of the top-selling dog food brands for her study. From a local humane society, she selects several chihuahua puppies under the age of 1 year. She will track these puppies for the next year and access their health, include weight, complete blood count, and paw size. Three puppies will be fed nothing but Brand #1 dog food, 10 puppies will only be fed Brand #2, and 10 puppies will only be fed Brand #3. What is the independent variable in this experiment? Time Dog weight Dog species Dog food type 87. A scientist wants to conduct qualitative research. Which method should she use?  Collecting patient narratives  Tracking the dosage of a drug and its blood levels in the patient  Observing a patient's physical changes  Writing journal notes about the research experience 88. Which of the following are functions of the kidney?  Release cortisol  Maintain water homeostasis  Filter blood of salt, nutrients, water, and waste  Store urine (waste from digestive system from protein breakdown) 89. Which of the following is a role of follicle-stimulating hormone?  Triggers the production of testosterone  Stimulates development of ova  Stimulates development of sperm  Triggers ovulation 90. What type of bond connects amino acids?  Covalent  Peptide  Ionic  Hydrogen 91. Which organ makes insulin and glucagon?  Salivary Glands  Liver  Gallbladder  Pancreas 92. If an atom has 32 neutrons, 17 protons and 19 electrons, what is its charge?  Positive  Negative  Neutral  Cannot be determined. 93. How does AIDS cause a failure in the immune system?  Helper T-Cells can’t activate Cytotoxic T-Cells or B-Cells.  IgE makes mast cells release too much histamine.  IgE makes mast cells release too little histamine.  Helper T-Cells trick the body into attacking itself. 94. A scientist wants to conduct quantitative research. Which method should she use?  Collecting patient narratives.  Tracking the dosage of a drug and its blood levels in the patient.  Observing a patient's physical changes.  Writing journal notes about the research experience. 95. Which of the following is NOT true about DNA?  DNA contains the nucleotides A, T, C, G and is read 5' to 3'.  DNA contains genetic information and is tightly coiled with protein to form chromosomes.  DNA contains the nucleotides A, T, C, G and is read 3' to 5'.  DNA is a double-stranded molecule that is connected by hydrogen bonds. 96. Which region of the small intestine is the primary site of absorption?  Duodenum  Jejunum  Ileum  Cecum 97. What some examples of proteins in the human body?  Keratin  Hemoglobin  Enzyme  Chitin 98. What step of the scientific method must come before generating a hypothesis?  Collecting and organizing data.  Communicating the results in a scientific journal.  Conducting an experiment.  Researching previous studies for background. 99. An FBI agent has spent her career studying individual serial killers. From this data, she creates a theory about the traits of these killers. What type of reasoning has she used?  Deductive Reasoning  Conductive Reasoning  Quantitative Reasoning  Inductive Reasoning 100. Which of the following is not true about the relationship between the gastrointestinal system and the endocrine system? .  Hormones signal to your body if you are hungry or full.  Hormones regulate the amount of glucose in your blood.  Hormones stimulate digestive enzymes and peristalsis when you've eaten and need to digest all the food.  All of the above are true. 101. Where is keratin?  It is a protein-digesting enzyme released by the stomach.  It is. released in the neuromuscular junction.  It is a protein found in the hypodermis.  It is a protein found in hair. 102. Sulfur has an atomic number of 16 and an atomic mass of approximately 32. How many neutrons and electrons could a negative ion of Sulfur have?  16 neutrons, 16 electrons  16 neutrons, 17 electrons  17 neutrons, 16 electrons  17 neutrons, 17 electrons 103. is the function of the Vas Deferens?  Makes fluid to increase sperm mobility  Site where the egg matures  Helps control urine flow  Connects each testis to the urethra 104. Dysentery is an infectious disease caused by what type of microbe?  Helminth  Bacteria  Protozoan  Fungus 105. Consider the graph which represents a botanist's data of root growth. What is the independent variable? Choose  Temperature  Root tissue  Light exposure  Root length 106. Which of the following best describes the relationship among density, volume, and mass?  As volume increases, density increases.  As volume decreases, density increases.  An object's mass does not affect its density.  As volume decreases, mass increases. 107. Which term refers to the mechanical act of breathing?  Diffusion  Perfusion  Respiration  Ventilation 108. What do lacteals absorb?  Carbohydrates  Lipids  Proteins  Nonpolar nutrients 109. Which of the following indicates the body's draining of clear fluid throughout the body in order to protect it from infection?  Pulmonary Loop  Systemic Loop  lymphatic System  Immune System 110.Which of the following is a pathology caused by a virus?  Asthma  Cystic Fibrosis  Epiglottitis  Influenza 111. A botanist wants to determine if environmental temperature affects root growth. In her experiment, she creates 4 rooms at temperatures that vary by 5 degrees F. Each room gets 20 seedlings of the same species, which she grows on agar plates for 60 days. Once a day, she measures the length of each seedling's root. At the end of 60 days, she compares the length of the roots with the room temperature. She finds the the room with the lowest temperature produced the longest roots. Which of the following is best identified as a hypothesis?  The environmental temperature can affect the growth of a plant's root.  Plants need light to grow.  A colder environment produces longer roots.  Plants need 60 days in order to grow their roots. 112. Which of the following is another name for a sweat gland?  Ceruminous  Sebaceous  Sudoriferous  Integumeous 113. Which of the following often contains a carboxyl group?  Carbohydrate  Glycolipids  Amino Acid  DNA 114. What might happen if blood sugar begins to drop in the human body?  The pancreas releases insulin.  The liver releases stored glucose.  The liver stores glucose as glycogen.  The pancreas releases glucagon 115. Which is a function of the liver?  Makes bile  Stores bile  Turns waste ammonia into urea  Filters and detoxifies products of digestion 116. Which of the following is an end product of cellular respiration?  Oxygen  ATP energy  Carbon dioxide  Water 117. Which of the following are true about human diploid cells?  Diploid cells contain two sets of homologous chromosomes from 1 parent.  Human diploid cells have 46 chromosomes.  Human diploid cells have 23 chromosomes.  Diploid cells contain two sets of homologous chromosomes from each parent.  Diploid cells are most cells in the human body.  Diploid cells are gametes. 118. Which of the following ratios are examples of Mendelian inheritance?  2:1  3:1  9:3:3:1  3:3:9:3 119. The _____________ variable is measured as a possible effect and is plotted on the _______ axis.  Independent, x  Independent, y  Dependent, x  Dependent, y 120. How many pairs of chromosomes are in a human cell?  46  23  64  32 121. What type of bond is in a salt?  Ionic  Nonpolar covalent  Polar covalent  Peptide 122. Where does mRNA translation typically occur?  On the ribosome  In the nucleus  In the cytoplasm  On the smooth endoplasmic reticulum 123. Which term refers to the space where lymph flows through the body?  Artery  Lumen  Interstitial space  Vein 124. Amino acids are the structural basis of proteins. What makes amino acids?  Amine group  Carboxyl group  Glycerol  Sugar residue 125. Sweat contains waste and help regulates body temperature. Which of the following are found in sweat found in the skin's glands?  Vitamin D  Urea  Urine  Lactic acid 126. Which of the following infectious diseases can be caused by a protozoan?  Measles  Malaria  Mumps  Mononucleosis 127. Which of the following is made by Natural Killer Cells in order to create pores for rupture?  Interferon  Apoptosis  Perforin  Antibody 128. Which of the following does not describe a general trait of macromolecules?  They can be single chains.  They can be branched.  They all contain carbon, hydrogen, and phosphorus.  They all are used by the body 129. Which of the following is a bone in or near the hand?  Phalanges  Metatarsals  Metacarpals  Carpals 130. At which step in the scientific method might a scientist create a model?  Hypothesis  Data analysis  Experimentation  Conclusion 131. What is hydroxyapatite?  A mixture of minerals like calcium and phosphorus that strengthen the collagen matrix of bone.  The structural unit of a bone that runs the length of the bone.  The covering of bones at the point of articulation to prevent grinding.  The lightest portion of a long bone and concentrated at the ends. 132. What are the three main regions of the kidney?  Cortex  Renal arch  Renal pelvis  Medulla 133. Which number stays constant despite possible changes to the element?  Atomic number  Number of electrons  Atomic mass  Isotope form 134. Which structure of the endocrine system matures T-Cells?  Hypothalamus  Pineal  Thymus  Thyroid 135. KCl is an example of which type of bond?  Ionic bond  Covalent bond  Hydrogen bond  Polar Covalent 136. Which of the following is an example of a nonspecific defense?  Skin  Macrophages  T-cells  Fever 137. Consider the graph which represents a botanist's data of root growth. On which axis would she label with centimeters?  X-axis  Z-axis  Y-axis  The graph label 138. What do the proximal and distal convoluted loops do?  They collect urine before it travels to the bladder.  They filter water and nutrients and excrete them as waste.  They filter water and nutrients and absorb them back into the body.  They use blood pressure to filter platelets out of the blood. 139. Which of the following is an example of qualitative data?  Observation  Questionnaire ranking  Interviews  Longitudinal studies 140. Which type of bone cell is the most mature?  Osteocyte  Osteoclast  Osteoblast  Osteon 141. Which structure in the brain links electrical messages of the nervous system to the chemical messages of the endocrine system?  Hypothalamus  Medulla oblongata  Pineal  Pituitary 142. Which of the following is an intensive physical property of matter?  Melting point  Boiling point  Density  Luster 143. What is the difference between the apocrine glands and the eccrine glands of the skin's dermis layer?  Apocrine glands are a type of sebum gland; eccrine glands are a type of sudoriferous gland.  Apocrine glands are a type of sudoriferous gland; eccrine glands are a type of sebum gland.  Apocrine gland are sudoriferous gland that open into the dermis; eccrine glands are a type of sudoriferous gland that open into the epidermis.  Apocrine gland are sudoriferous gland that open into a hair follicle; eccrine glands are a type of sudoriferous gland that open into the epidermis. 144. What would the charge of an ion of Calcium be?  1+  2+  1-  2- 146. What is the functional unit of a muscle?  Actin  Myosin  Myofibril  Sarcomere unit 147. Which of the following affect the effectiveness of an enzyme?  Temperature  pH  Substrate  Inhibitor 148. Which of the following are the smallest units in muscle tissue?  Actin and myosin  Actin and sarcomere units  Myosin and sarcomere units  Actin and myofibril 149. Which of the following is not in the nucleic acid of RNA?  Adenine  Thymine  Guanine  Cytosine 150. Which compound is formed when the negative ions from an acid combine with the positive ions from a base?  Ester  Alcohol  Carboxyl group  Salt 151. Which of the following is an axial bone?  Sternum  Carpals  Calcaneus  Humerus 152. What happens to air as it moves through the trachea and bronchi?  The air only becomes warmer.  Oxygen and carbon dioxide are exchanged.  The air only becomes more moist.  The air becomes warmer and more moist. 153. Which of the following has a basic pH in the body?  Urine  Salt water  Blood  HCl 154. What is the functional unit of bone called?  Canaliculi  Lamellae  Osteons  Periosteum 155. Magnesium (Mg) undergoes a chemical reaction and becomes an ion. How many electrons can you expect it lose or gain?  Magnesium will gain two electrons.  Magnesium will gain six electrons.  Magnesium will lose six electrons.  Magnesium will lose two electrons. 156. Which of the following might introduce unintentional bias into a scientific experiment?  Selecting a non-representative study group  Conducting an experiment with a small sample size  Altering the results of an experiment  Favoring a particular outcome of the experiment 157. How many protons does a negatively charged isotope of Nitrogen-12 have?  5  7  12  14 158. A student has been assigned an experiment into the life cycle of a frog. First, she needs to count the daily number of tadpoles at her assigned pond. Which of the following would give her the most accurate and reliable data?  Going to the pond in every morning, collecting a 1 L sample of water, and counting the tadpoles.  Going to the pond every morning at 10 a.m., collecting a 1 L sample of water, and counting the tadpoles.  Going to the pond every morning at 10 a.m., collecting a 1 L sample of water at 3 set locations at the pond, and counting the tadpoles.  Going to the pond once a week at 10 a.m., collecting a 1 L sample of water at 3 set locations at the pond, and counting the tadpoles. 159. Which would a researcher select for measuring mass