Which term describes a pure substance that is made up of only one type of atom?
o matter
rock
compound
o element
re
ratele
+ sono
f

The substance which is composed of only one type of atom is called an element.

Option D

Explanation:

In chemistry, elements are defined as substance with one type of atom. Due to the presence of only one type of atom in it, elements are considered pure. When one or two elements combine in an appropriate ratio, it leads to the formation of compound.

There are 118 elements used in chemistry which have been arranged in tabular form and are called a periodic table. Among them, some are naturally occurring and some are man-made.

a neutral ph of 7 and normal organism temperature is needed for a certain enzyme to be effective.  

what would happen to the enzyme if the ph and/or temperature fluctuate greatly from the norm?  

a.the enzyme’s hydrogen bonds will break.  

b.the activation energy will increase.  

c.more product will be formed.

d.the ideal temperature and ph for the enzyme function will decrease.