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TEAS 7 Science TEAS 7 Science Practice Test 1 A doctor needs to convince his boss to a...

A doctor needs to convince his boss to approve a test for a patient. Which statement below best communicates a scientific argument that justifies the need for the test?

A. The patient looks like he needs this test.

B. The doctor feels that the patient needs this test.

C. The patient's symptoms and health history suggest that this test will enable the correct diagnosis to help the patient.

D. The patient has excellent insurance that will pay for several tests, and the doctor would like to run as many tests as possible.

Answer Explanation:

A scientific argument should be based on measurable and observable facts such as the patient's current symptoms and health history. Discussing the patient's appearance or the doctor's feelings does not communicate a scientific argument. While insurance may be a factor in most healthcare systems, the status of the patient's Insurance does not communicate a scientific argument that justifies the need for the test

Therefore, the Correct Answer is C.

More Questions on TEAS 7 Science

  • Q #1: Which of the heart chambers is the largest?

    A. Left atrium

    B. Right atrium

    C. Left ventricle

    D. Right ventricle

    Answer Explanation

    Of the four heart chambers, the left ventricle is the largest. When it contracts, it pushes blood out to the organs and extremities of the body. The right ventricle pushes blood into the lungs. The atria, on the other hand, receive blood from the outlying parts of the body and transport it into the ventricles.

    The basic process works as follows: Oxygen-poor blood fills the right atrium and is pumped into the right ventricle. from which it is pumped into the pulmonary artery and on to the lungs. In the lungs, this blood is oxygenated. The blood then reenters the heart at the left atrium, which, when full, pumps into the left ventricle. When the left ventricle is full, blood is pushed into the aorta and on to the organs and extremities of the body.

  • Q #2: Where is the gastrocnemius vein in relation to the femoral vein?

    A. Lateral

    B. Distal

    C. Superior

    D. Ventral

    Answer Explanation

    The gastrocnemius vein is found in the calf. The femoral vein is found in the proximal anterior thighs/pelvis.

    Since the gastrocnemius vein is found below the femoral vein it is distal or inferior to the femoral vessel.

  • Q #3: Which of these body parts does NOT produce melanin?

    A. Hair

    B. Nails

    C. Skin

    D. Iris

    Answer Explanation

    While melanin can be found in nails, it is not produced there. Melanin is the pigment that provides color to skin, hair, and eyes. Although the specific coloring of one's skin, hair, and eyes are genetically determined. environmental factors such as sun exposure can increase melanin production in the skin to help protect it from damage.

  • Q #4: What is the role of ribosomes?

    A. Make proteins

    B. Waste removal

    C. Transport

    D. Storage

    Answer Explanation

    A ribosome is a structure of eukaryotic cells that makes proteins.

  • Q #5: What is a hypothetical explanation for an occurrence that is based on prior knowledge called?

    A. Independent variable

    B. Dependent variable

    C. Trial

    D. Hypothesis

    Answer Explanation

    A hypothesis is the use of prior knowledge in order to provide a hypothetical explanation for why something may or may not occur. A hypothesis can be proved wrong or right based on the results of the experiment and repeated trials.

  • Q #6: Which of the following is true regarding adipocytes?

    A. They are involved in the secretion of glucose.

    B. They are responsible for storing the fat that is found in adipose tissue

    C. They are critical in the digestive breakdown of fat

    D. They are the foundational element of muscles

    Answer Explanation

    Adipocytes are primarily seen in adipose or fat tissue. Their primary function is the storage of fat Adipocytes play a crucial role in maintaining proper energy balance, storing calories in the form of lipids, and mobilizing energy sources in response to stress. They are not involved in the digestion of fat or the secretion of glucose, nor are they the foundational element of muscles

  • Q #7: Given that there are over 100 million residential addresses in the United States, which of the following best describes a flaw of this survey as it is described?

    A. There were not enough age groups to show a trend based on age.

    B. The addresses were chosen randomly rather than strategically

    C. The distribution of ages in the sample did not reflect the actual population

    D. Each response represents only one person per address

    Answer Explanation

    While the random selection and large number of surveys sent out were a good start, to truly study the relationship between age and screen usage, it would have been better to have a few more age groups or just a direct age value from each participant rather than four large categories. As far as whether the age distribution accurately reflected the population, we don't have enough information to say if that was a problem or not. Also, the fact that each response is from just one person at the address is not a flaw but a reasonable way to get a good variety of responses

  • Q #8: Which of the following is an example of a chemical change?

    A. Releasing compressed gas to make a bottle-rocket launch

    B. Adding water to clay to make slip

    C. Crystalizing honey to make candy

    D. Including baking soda in a recipe to make it less sour

    Answer Explanation

    A chemical change involves a chemical reaction and new substances are produced. When baking soda is added to something sour (acidic) it neutralizes the acid and forms new molecules, in this case carbon dioxide and water. A physical change does not produce new substances. Phase changes such as evaporation and sublimation are physical changes. Changing the ratio of ingredients in a mixture, like adding more water to clay, does not change it chemically, but it can change some of the mixture's physical properties.

  • Q #9: How many different types of nucleotides are there in DNA?

    A. One

    B. Two

    C. Four

    D. Eight

    Answer Explanation

    There are four different nucleotides in DNA. Nucleotides are monomers of nucleic acids, composed of five- carbon sugars, a phosphate group, and a nitrogenous base. Nucleotides make up both DNA and RNA. They are essential for the recording of an organism's genetic information, which guides the actions of the various cells of the body.

  • Q #10: When animals eat, insulin is released from the pancreas, stimulating glucose uptake by the liver. When glucose levels drop, the pancreas reduces insulin release. This is an example of which mechanism for maintaining homeostasis?

    A. Negative feedback

    B. Positive feedback

    C. Stress response

    D. Parasympathetic regulation

    Answer Explanation

    Maintaining homeostasis means that conditions are kept stable and relatively constant. Negative feedback is a mechanism used to reverse or minimize changes in a system. In this example, negative feedback is used to keep the body's glucose and insulin levels stable. Positive feedback (B) is a mechanism that Increases changes in a system. A stress response (C) describes the body's reaction to threats or pressures. Parasympathetic regulation (D) refers to activities of the nervous system, including slowing the heart rate and boosting Intestinal activity.

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