Zoogloea form flocculent masses in
A) anaerobic sludge digestion.
B) primary sewage treatment.
C) activated sludge digestion.
D) tertiary sewage treatment.
E) water treatment.
C
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The allelic make up of a cell or individual is referred to as its
A. blueprint. B. genotype. C. phenotype. D. pedigree.
The appendages in both fishes and tetrapods develop from buds of ____, the middle embryonic tissue layer
a. ectoderm b. endoderm c. mesoderm d. epiderm e. hypoderm
Plastids are storage organelles. A chloroplast is a type of plastid. What does a chloroplast store?
A) Energy B) Chlorophyll C) Carbon D) Electrons
Which specific defense mechanism protects against foreign organisms that have managed to infect body cells by destroying these cells?
A) cell-mediated immune system B) antibody-mediated immune system C) pyrogens D) inflammatory response