Which of the following is NOT provided as a result of the valid research and observations recorded by scientists?
A. A better understanding of the physical world
B. The ability to predict possible outcomes affected by actions
C. The ability to prevent earthquakes and other natural disasters
D. The creation of various substances and technologies that enhance our world
Scientists make observations, gather data, and complete research over many years in order to compile knowledge that will provide insight into future disasters, such as earthquakes, storms, and global warming. Although science can be used to predict earthquakes and other natural disasters, there is currently no way of preventing them from occurring.
Therefore, the Correct Answer is C.
More Questions on TEAS 7 Science
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Q #1: Which of the following anatomical terms is NOT part of the knee?
A. Medial collateral ligament
B. Patella
C. Lateral malleolus
D. Lateral meniscus
Answer Explanation
The term "lateral malleolus" refers to the bony prominence on the outer side of the ankle.
It is part of the ankle joint, not the knee joint. The other options, such as the medial collateral ligament, patella, and lateral meniscus, are all associated with the knee joint.
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Q #2: Which of the following is NOT true concerning correlation?
A. Correlation can show the relationship between variables.
B. Correlation can show cause and effect.
C. Correlation can show linear relationships.
D. Correlation can show nonlinear relationships.
Answer Explanation
Correlations may be positive or negative and linear or nonlinear. However, correlation does not determine cause and effect. Correlation does not necessarily mean causation.
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Q #3: Which structure of the nervous system carries action potential in the direction of a synapse?
A. Cell body
B. Axon
C. Neuron
D. Myelin
Answer Explanation
Axons carry action potential in the direction of synapses. Axons are the long, fiber-like structures that carry information from neurons. Electrical impulses travel along the body of the axons, some of which are up to a foot long.
A neuron is a type of cell that is responsible for sending information throughout the body. There are several types of neurons, including muscle neurons, which respond to instructions for movement; sensory neurons, which transmit information about the external world; and interneurons, which relay messages between neurons. Myelin is a fat that coats the nerves and ensures the accurate transmission of information in the nervous system.
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Q #4: 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.
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Q #5: What types of reaction is Cu (s) + 2AgNO3(aq) → 2Ag(s) + Cu(NO3)2(aq)?
A. Single replacement
B. Double replacement
C. Synthesis
D. Decomposition
Answer Explanation
This is a single replacement reaction in which copper replaces silver. The copper combines with the nitrate ions, and the silver precipitates out. Single replacement reactions have the general form of
A + BC →
AC + B. Double replacement reactions have the general form of AB + CD→
AD + CB. Synthesis reactions have the general form of A + B →
AB. Decomposition reactions have the general form AB→
A+B. -
Q #6: A patient lying flat on their back is in which of the following positions?
A. Prone
B. Supine
C. Lateral
D. Medial
Answer Explanation
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Q #7: Which of the following statements best defines an organelle?
A. Layer of polysaccharides outside the plasma membrane of cells
B. Abnormal Infectious proteins
C. Specialized structures within a cell
D. Collection of tissues used to serve a specific function
Answer Explanation
Organelles are specialized structures within a cell that serve a specific function. For example, mitochondria supply energy to the cell by generating adenosine triphosphate. Ribosomes are the site for protein synthesis. The nucleus is in charge of all of the activities of the cell.
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Q #8: Which of these does NOT match the nitrogenous base to the nucleobase?
A. Purine: Adenine
B. Purine: Thymine
C. Pyrimidine: Uracil
D. Pyrimidine: Cytosine
Answer Explanation
There are two types of nitrogenous bases: purine and pyrimidine bases. Purine bases have two rings in their structure and consist of adenine and guanine. Pyrimidine bases only have one ring in their structure and consist of thymine and cytosine (DNA) and uracil and cytosine (RNA). Therefore, the correct answer is B since thymine is a pyrimidine.
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Q #9: Which of the following is a carbohydrate?
A. Cellulose
B. Hemoglobin
C. Estrogen
D. ATP
Answer Explanation
Cellulose is a complex carbohydrate that composes the better part of the cell wall.
Hemoglobin is a protein and is found in red blood cells. Adenosine triphosphate (ATP) is a compound used by living organisms to store and use energy. Estrogen is a steroid hormone that stimulates the development of female sex characteristics.
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Q #10: 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.
