Animals have enzymes that break apart starch molecules but not cellulose, despite the fact that both are made up of glucose subunits. Which enzyme characteristic best explains this?
A) Enzymes are not permanently changed by the reactions they promote.
B) All enzymes are proteins.
C) Enzymes are highly specific.
D) Enzyme activity is regulated.
E) Enzymes usually speed up chemical reactions.
C
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Amino acids, the monomer units comprising proteins, contain two functional groups, amino and carboxyl
Indicate whether the statement is true or false.
Based on the location of the flagellum, what function do you think it serves?
a. it plays a role in the exocytosis process. b. locomotion. c. it is a receptor site for proteins. d. none of the above.
What is the effect of equal rates of birth and death?
a. The population grows very quickly. b. The population declines. c. The population remains constant as long a r remains equal to zero. d. The population grows, but very slowly.
What ultimately is the greatest threat to
biodiversity?
a. plant pathogens b. exotic species c. unthinking humans d. mineral and energy use e. conservation efforts