Insert Text Questions
19th Question
Chemistry: The Central Science
Chemistry is sometimes referred to as “the central science” due to its interconnectedness with a vast array of other STEM disciplines (STEM stands for areas of study in the science, technology, engineering, and math fields). Chemistry and the language of chemists play vital roles in biology, medicine, materials science, forensics, environmental science, and many other fields.
A The basic principles of physics are essential for understanding many aspects of chemistry, and there is extensive overlap between many subdisciplines within the two fields, such as chemical physics and nuclear chemistry. B Mathematics, computer science,and information theory provide important tools that help us calculate, interpret, describe,and generally make sense of the chemical world. C Biology and chemistry converge in biochemistry, which is crucial to understanding the many complex factors and processes that keep living organisms (such as us) alive. D Chemical engineering, materials science, and nanotechnology combine chemical principles and empirical findings to produce useful substances, ranging from gasoline to fabrics to electronics. Agriculture, food science, veterinary science, and brewing and winemaking help provide sustenance in the form of food and drink to the world’s population. Medicine, pharmacology, biotechnology, and botany identify and produce substances that help keep us healthy. Environmental science, geology, oceanography, and atmospheric science incorporate many chemical ideas to help us better understand and protect our physical world. Chemistry’s usefulness also extends outside of our own world to help us better understand the universe and the composition of space in disciplines like astronomy and cosmology.
Q. In paragraph 2 there is a missing sentence. Look at the four squares [A, B, C, D] that indicate where the sentence could be added. Where would the sentence best fit?
Biochemistry is one of the five major branches of chemistry, which can be divided into many sub-branches.
A
B
C
D
D is correct. The sentence mentions “biochemistry” which is explained in the previous sentence, so it makes sense for the missing sentence to be placed here. Also, the missing sentence fits nicely in place D because it introduces the “sub-branches” of chemistry that the next sentence lists and explains. It does not fit in place C because the following sentence explains what biochemistry is and does not mention any sub-branches or subdisciplines. The sentence does not fit or flow in any other place in the paragraph.