Which of the following is False?
a. Substrates are usually smaller than the enzymes that act on them
b. Each enzyme binds with a unique type of molecule called its substrate
c. Enzymes eventually wear out and are replaced
d. A cell contains only a few enzymes, maybe only one and usually less than 10
e. Enzymes are proteins
2007-01-22 11:16:14 · 5 answers · asked by mini 1 in Science & Mathematics ➔ Biology
D cuz there are many chemical reactions are occuring in our cells, so our cells need more than 10 enyzems, in glycolysis i believe there are more than 5 enzymes needed, in dna rplication also need enzymes and many more so D is false
2007-01-23 03:59:43 · answer #1 · answered by Anonymous · 0⤊ 0⤋
D is certainly false, but so is E. Not all enzymes are proteins. The vast majority are, but there are what is called ribozymes. Ribozymes are RNA molecules that will catalyze reactions in the same way enzymes do. As such they are considered enzymes.
2007-01-23 11:13:36 · answer #2 · answered by damoose79 1 · 0⤊ 0⤋
a, b, &e are definitely true.
I'm not 100% sure about c, but if I recall correctly it is also true.
Wikipedia says "almost all processes in the cell need enzymes in order to occur at significant rates." That certainly sounds to me like d would then be false.
2007-01-22 11:30:30 · answer #3 · answered by Jerry Garcia 3 · 0⤊ 0⤋
D. Cells need many kinds of enzymes because enzymes are specific - each enzyme can only help one kind of reaction.
2007-01-22 11:26:02 · answer #4 · answered by ecolink 7 · 0⤊ 0⤋
I think D. would be the best answer for that but i'm not sure.
2007-01-22 11:24:24 · answer #5 · answered by tumblertae 1 · 0⤊ 0⤋