Which is true about chemical reactions?
a. They represent the way matter is created and destroyed
b. They involve the making and breaking of chemical bonds
c. They may have different numbers of a given atom on each side
d. They reach chemical equilibrium when the amounts of products are equal
Ans: b. They involve the making and breaking of chemical bonds
You might also like to view...
Water molds are
a. parasites of fish and invertebrates. b. the cause of late blight of potatoes. c. the cause of sudden oak death. d. responsible for the destruction of cucumber, squash, and other crops. e. all of these.
The movements of nutrients from the environment to organisms and then back to the environment is a(n) ____
a. energy-mass cycle b. global cycle c. solar-plant cycle d. sedimentary cycle e. biogeochemical cycle
The number of genes correlates with _____.
a) the size of the genome in prokaryotes b) and is approximately equal to the number of different proteins that a species can make c) being much higher among Eubacteria than in Archaea d) the size of the genome in eukaryotes e) being higher in Archaea than in eukaryotes
Scrapie is an example of a ________ disease found in sheep and caused by a prion.
a) neurological b) gastrointestinal c) respiratory d) cardiovascular