The main form of nitrogenous wastes released by aquatic invertebrates to their environment is ____
a. nitrate
b. ammonia
c. uric acid
d. amino acids
e. urea
ANSWER: b
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Answer the following statements true (T) or false (F)
1. All enzymes are proteins. 2. Because of the abundance of ribosomes, translation is NOT an energy costly process for the cell. 3. The cells of every organism make only a few different tRNA molecules encoded by the same gene. 4. In eukaryotes, 40S and 60S combine to form a 100S ribosome.
The term that refers to flagella at both poles of the cell is ________.
A. atrichous B. peritrichous C. monotrichous D. lophotrichous E. amphitrichous
Lamarck's theory of evolution was based upon
A. polyploidy. B. geographic isolation. C. macroevolution. D. acquired characteristics.
Haploinsufficiency refers to ________
A) the condition whereby a single chromosome is insufficient to sustain life B) the genetic predisposition for some genes to come in only one copy in the genome C) the condition whereby a single cell is insufficient to divide to cause cancer D) a state of being whereby a single gene is sufficient to cause several phenotypes E) the process by which a single gene will cause a cascading effect on a genome's phenotype