Which type of macromolecule is present in enzymes?
What will be an ideal response?
proteins
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Annuals are never
a. grasses. b. herbaceous plants. c. herbs. d. woody plants
The division of the plasma membrane begins with a(n) ____
a. exocytosis reaction b. cleavage furrow c. membrane slice d. membrane ridge e. cleavage cycle
Which is not correct about water molecules?
A. Hydrogen bonds exist between water molecules. B. Hydrogen bonds are weak bonds. C. Covalent bonds exist within a water molecule. D. Water is a polar molecule. E. Hydrogen is more electronegative than oxygen.
Doubling the chromosomes of a sterile species hybrid with colchicine or cold shock is a method used to produce a fertile species hybrid called a ________
A) autoallopolyploid B) (amphidiploid) C) autoploid D) allopolyploid E) triploid