Enzymes that are only produced when substrate is present are termed
A. constitutive enzymes.
B. induced enzymes.
C. conjugated enzymes.
D. exoenzymes.
E. endoenzymes.
Answer: B
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The youngest leaf primordium is produced closest to the stem tip because:
A. Auxins are closest to the tip. B. The tip is elongating outward. C. The leaf primordial only respond to light. D. The primordial lack a sense of direction. E. Expansion genes do not function well in aging tissue.
Fertilizers are essentially made up of:
A. mostly organic matter B. different types of soil C. deficiency amendments D. minerals E. plant foods
The complex of proteins that is involved in the replication of DNA is called a(n) ________
Fill in the blank(s) with correct word
Which of the following cells form new bone in bone tissue?
A) osteons B) osteoblasts C) osteocytes D) fibroblasts