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Practice Test #1: Science ATI TEAS Latest
Updated
Which statement about white blood cells is true? a. B cells are responsbile for antibody production. b. White blood cells are made in the white/ yellow cartilage before they enter the bloodstream. c. Platelets, a special class of white blood cell, function to clot blood and stop bleeding. d. The majority of white blood cells only activate during the age of puberty, which explains why children and elderly are particulary susceptible to disease. - correct answer A In testing how quickly a rat dies by the amount of poison it eats, which of the following is the independent variable and which is the dependent variable? A. How quickly the rat dies is the independent variable; the amount of poison is the dependent variable. B. The amount of poison is the independent variable; how quickly the rat dies is the dependent variable. C. Whether the rat eats the poison is the independent variable; how quickly the rat dies is the dependent variable. D. The cage the rat is kept in is the independent variable; the amount of poison is the dependent variable. - correct answer B Which of the following are functions of the urinary system? *I. Synthesizing calcitrol and secreting erythropoeitin.
II Regulating the concentrations of sodium, potassium, chloride, calcium, and other ions. III. Reabsorbing or secreting hydrogen ions and bicarbonate. IV. Detecting reductions in blood volume and pressure* A. I, II, & III B. II & III C. II, III, & IV D. All of the above - correct answer D Which of the following structures is unique to eukaryotic cells? A. Cell walls B. Nuclei C. Cell membranes D. Organelles - correct answer B Which of the cellular organelle used for digestion to recycle materials? A. The Golgi apparatus B. The Lysosome C. The Centrioles
C. Right Ventricle D. Left Ventricle - correct answer C
- What is the purpose of sodium bicarbonate when releases into the lumen of the small intestine?* A. It works to chemically digest fats in the chyme. B. It decreases the pH of the chyme so as to prevent harm to the intestine. C. It works to chemically digest proteins in the chyme. D. It increases the pH of the chyme so as to prevent harm to the intestine. - correct answer D Which of the following describes a reflex arc? A. The storage and recall of memory B. The maintenance of visual and auditory acuity C. The autoregulation of heart rate and blood pressure. D. A stimulus and response controlled by the spinal cord. - correct answer D
- Describe the synthesis of the lagging strand of DNA* A. DNA polymerases synthesize DNA continuously after initially attaching to a primase.
B. DNA polymerases synthesize DNA discontinously in pieces called Okazaki fragments after initially attaching to primases. C. DNA polymerases synthesize DNA discontinously in pieces called Okazaki fragments after initially attaching to RNA primers. D. DNA polymerases synthesize DNA discontinously in pieces called Okazaki fragments which are joined together in the end by a DNA helicase. - correct answer C Using anatomical terms, what is the relationship of the sternum relative to the deltoid? A. Medial. B. Lateral. C.Superficial D.Posterior - correct answer A
- Ligaments connect what?* A. Muscle to muscle B. Bone to Bone C. Bone to muscle D. Muscle to tendon - correct answer B Body Planes and Sections - correct answer sagittal, frontal (coronal), transverse
C. Somatic mutations are not expressed for several generations, but germline mutations are expresses immediately. D. Germline mutations are usually inherited while somatic mutations will affect only the individual. - correct answer D
- A child complains of heavy breathing even when relaxing. They are an otherwise healthy child with no history of respiratory problems. What might be the issue?* A. Asthma B. Blood Clot C. Hyperventilation D. Excerising too hard - correct answer A
- Find the loswest coefficients that will balance the following combustion equation.*
- ______C2 H10 + ______ O2 -> ____ H2O + _____ CO A. 1:5:5: B. 4:10:20: C. 2:9:10: D.2:5:10:4 - correct answer C
- What is the purpose of a catalyst?*
A. to increase a reaction's rate by increasing the activation energy B. to increase a reaction's rate by increasing the temperature C. to increase a reaction's rate by decreasing the activation energy D. to increase a reaction's rate by decreasing the temperature - correct answer C
- Most cataysts found in biological systems are which of the following?* A. Special lipids called cofactors B. Special proteins called enzymes C. Special lipids called enzymes D. Special proteins called cofactors - correct answer B
- Which statement si true about the pH of a solution?* A. a solution cannot have a pH less than 1. B. the more hydroxide ions in the solution, the higer the pH. C. If an acid has a pH of greater than 2, it is considered a weak base. D. A solution with a pH od 2 has ten times the amount of hydrogen ions than a solution with a power of
D. Definite shape and indepfinite volume - correct answer A
- Which of the following areas of the body has the most sweat glands?* A. Upper back B. Arms C. Feet D. Palms - correct answer A A patients body is not properly filtering blood. Which of the following body parts is most likely malfunctioning? A. Medulla B. Heart C. Nephrons D. Renal Cortex - correct answer C
- A pediatrican notes that an infant's cartilage is disappearing and being replace by bone. What process has the doctor observed?* A. Minerlization B. Ossification
C. Osteoporosis D. Calcification - correct answer B
- The epidemis is compose of what type of cells?* A. Osteoclasts B. Connective C. Dendritic D. Epithelial - correct answer D
- Which of the following is directly transcribed from DNA and represents the first step in protein building?* A. siRNA B. rRNA C. mRNA D. tRNA - correct answer C
- What information does a genotype give that a phenotype does NOT?* A. The genotype necessarily includes the proteins coded for by its alleles.
A.Sequences of amino acids to be transcribed into mRNA B. Lethal recessive traits like sickle cell anemia C. Mutated DNA D. DNA that codes for proteins the cell doesn't use - correct answer A
- Which of the following is a special property of water?* A. Water easily flows through phospholipid of water B. A water molecule's oxygen atom allows fish to breathe C. Water is highly cohesive which explains its high melting point D. Water can self-hyrolyze and decompose into hydrogen and oxygen - correct answer C
- What is an isotope?* For any given element... A. it is an atom with a different atomic number B.it is an atom with a different number of protons C. it is an atom with a different number of electrons D. it is an atom with a different mass number - correct answer D
- What is the electrical charge of the nulceus?* A. A nucleus always has a positive charge B. A stable nucleus has a positive charge, but a radioactive nucleus may have no charge and instead be neutral C. A nucleus always has no charge and is instead neutral D. A stable nucleus has no charge and is instead neutral, but a radioactive nucleus may have a charge - correct answer A
- A student believes that there is an inverse relationship between sugar consumption and test scores. To test this hypthesis, he recruits several people to eat sugar, wait one hour, and take a short aptitude test afterwards. The students will compile the participants' sugar intake levels and test scores. How should the student conduct the experiment?* A. One round of testing, where each participate consumes a different level of sugar. B. Two rounds of testing: The first, where each participant consumes a different level of sugar, and the second, where each participant consumes the same level as they did in Round 1. C. Two rounds of testing: The first, where each participant consumes the same level of sugar as each other, and the second, where each participant consumes the same level of sugar as each other but at higher levels than Round 1. D. One round of testing, where each participant consumes the same level of - correct answer C
- Which of the following creates sperm?* A. Prostate gland
Group |Sunlight |Water |Fertilizer 1 partial sun 4 mL/hr 1 2 full sun 7 mL/hr 1 3 no sun 14 mL/hr 2 4 partial sun 3 mL/hr 2 A. insects gnawed away the stem of the plant B. The roots rotted due to poor drainage C. The soil type had nutrition deficiencies D. This species of peas does not thrive in full sunlight - correct answer D
- Which of the following functions corresponds to the parasympathetic nervous system?* A. it stimulates the fight - or - flight response B. It increases heart rate C. it stimulates digestion D. it increases bronchiole dilation - correct answer C
- According to the peridodic table, which of the following elements is the least reactive?* A. Fluorine B. Silicon
C. Neon D. Gallium - correct answer C
- The Human Genome Project is worldwide research project launched in 1990 to map the entire human genome, Although the Project was faced withe monmental challenge of analyzing tons and tons of data, its objective was completed in 2003 and ahead of its deadline by two years. Which of the follwing inventions likely had the greatest impact of this project?* A. the sonogram B. X ray diffraction C. The microprocessor D. Magnectic Resonance Imaging (MRI) - correct answer C
- Which of the following inventions likely had the greatest improvement on the ability to combat nutrition deficiencies in developing countries?* A. Food products fortified with dietary vitamines and minerals B. Integrated statistical models of fish populations C. Advances so that microscopes can use thicker tissue samples D. Refrigerated train cars for transportation of food - correct answer A
- Which of the following is the gland that helps regulate calcium levels?*
D. The is no decrease or increase of matter - correct answer D
- Which of the following is the best unit to measure the amount of blood in the human body?* A. Ounces B. Liters C. Millilters D. Pounds - correct answer B
- Which of the following systems does not include a transportation system throughout the body?* A. Cardiovascular system B. Endocrine system C. Immune system D. Nervous system - correct answer B
- Which of the following correctly identifies a difference between the primary and secondary immune response?* A. In the secondary response, macrophages migrate to the lymph nodes to present the foreign miccroganism to helped T lymphocytes.
B. The humeral immunity that characterizes the primary response is coordinated by T lymphocytes C. The primary response is quicker and more powerful than the secondary response D. Suppressor T cells activate in the secondary response to prevent an overactive immune response. - correct answer D
- Eosinophils are best described as which of the following?* A. A type of granulocyte that secretes hormones, which stimulates the inflammatory response. B. The most abundant type of white blood cell and they secrete substances that are toxic ot pathogens. C. A type of granulocyte found under mucous membranes and defends against multicelluar parasites. D.A type of circulating granulocyte that is aggressive and has high phagocytic activity - correct answer C
- Which of the following correctly matches a caterogry of protein with a physiologic example?* A. Keratin is a structural protein B. Antigens are hormonal proteins C. Channel proteins are marker proteins D. Actin is a transport protein - correct answer A
