An autotroph captures energy from other sources and does not actually produce energy because ____.
A. once energy is created it can be destroyed.
B. the transfer of energy increases entropy.
C. energy cannot be created or destroyed.
D. the transfer of energy increases the disorder of a system.
E. kinetic energy is based on location.
C. energy cannot be created or destroyed.
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Human triploid and tetraploid fetuses occur, but they are inviable and undergo spontaneous abortion. Any of the following events could produce a polyploid fetus EXCEPT:
A. defective spindle apparatus during early mitosis. B. failure of homologous chromosome separation. C. fertilization of an egg by more than one sperm. D. chromosome duplication without cell division. E. development of an unfertilized ovum.
A condition in which microorgan¬isms secrete destructive enzymes and acids that cause inflammation of the surrounding gum is called ________.
A. normal flora B. shivering C. hypervariable D. periodontitis E. dental plaque
An adult patient has just received a diagnosis of brain cancer and is undergoing treatment. Based on what you know about cell division and cancer, why does this seem unusual?
What will be an ideal response?
Name two similarities between macrophages and dendritic cells
What will be an ideal response?