Marceau is studying small single-celled organisms that contain phospholipid membranes. These organisms can be broadly classified into the domain:
A. Protista
B. Fungi
C. Animalia
D. Bacteria
Answer: D
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What is the name of the specific region of an enzyme responsible for catalysis?
a. functional domain b. active site c. binding site d. allosteric site e. reaction domain
Sporadic cancers ____
a. may develop when proto-oncogenes mutate to form tumor suppressor genes b. may develop when tumor suppressor genes are over-expressed c. are caused by benign tumors d. are cancers that are not inherited e. are less frequent than familial cancers
Signaling molecules secreted by one individual that modify the behavior of others are:
a. corticosteroids b. pheromones c. releasing hormones d. inhibiting hormones e. glucocorticoids
Mutations in the lacI and lacO genes of the lac regulatory system in E. coli often lead to full transcription of the three structural genes, even when no lactose is available to the organism. Such mutations would be called ________
Fill in the blank(s) with correct word