You are telling your friend that organic molecules are all made up of carbon backbones with hydrogens. She doesn't understand how there can be so many different organic molecules if they all are made up of the same basic components
You explain that organic molecules
A) are different because of the different types of hydrogen bonds that form.
B) actually all have the same structure but differ in the number of electrons.
C) vary because they possess different isotopes of carbon.
D) vary because they possess different functional groups.
D
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The beating flagellae of ____ maintain a constant flow of water through sponges
a. amoeboid cells b. choanocytes c. sperm d. porocytes e. pinacoderm
In which process are fluids pumped into the abdominal cavity to absorb wastes, then pumped out?
a. none of the choices b. peritoneal dialysis c. gastric lavage d. hemodialysis
Flagellated protozoans possess a layer of
elastic proteins just beneath the plasma membrane called the
a. pellicle. b. cilium. c. capsule. d. pillus. e. flagellum
The coupling of Monoiodotyrosine(MIT) and Diiodotyrosine(DIT) of the thyroglobulin takes place in the presence of
a) Tyrosine Peroxidase b) Hydrogen Peroxidase c) None of the above d) All of the above