Describe how syntrophy helps explain why certain enrichments yield consortia and never an individual species
What will be an ideal response?
Answer: Some catabolic processes are favorable only when two different species cooperate in such a way that the first step is catalyzed by one species while the second species catabolizes the product formed from the first species. In this way, an enriched syntrophic consortium develops, and the process cannot be accomplished by only one species.
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If an organism inherits two recessive alleles, the phenotype of this organism will look like which of the following?
a. the dominant allele b. the recessive allele c. both the dominant and recessive allele d. neither the dominant or recessive allele
Oral infections with herpes simplex virus 1 can lie dormant in nerve cells for years, and when a patient becomes stressed, the virus is released, forming cold sores on the lips. Where will the virus be while dormant in the nerve cell?
a. Floating in the nerve cell cytoplasm b. Integrated in the nerve cell chromosomes c. In the nerve cell membrane d. Floating outside of the nerve cell, waiting to reinfect it e. In the blood
Four of the five structures listed below belong to the
same system. Select the exception. a. heart b. spleen c. thymus d. tonsils e. lymph node
Cell energy can be extracted from which of these?
A. iron B. water C. carbohydrates D. All of these answers are true.