A marine biologist visits your biology class and begins his talk entitled, "Life as a Trochophore." A friend seated next to you asks, "What is a trochophore?" You explain that a trochophore is
A. another name for the veliger stage in earthworm reproduction.
B. a term used to describe a larval form of either the phylum Mollusca or Annelida.
C. another name for the veliger stage in the oyster.
D. similar to a lophophore, but only found in the phylum Annelida.
E. a parasite in the intestines of a bivalve mollusk.
B. a term used to describe a larval form of either the phylum Mollusca or Annelida.
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Create an experiment where you would use both a Southern blot and a Northern blot to determine if a newly isolated bacterium contains and actively uses the same catabolic pathway as previously demonstrated
What is the value in doing the Southern blot first? With results from these experiments, how would you conclude if the same pathway is active or not? What will be an ideal response?
Compare and contrast the signal transduction pathway involving cAMP with that involving phospholipids. What will be an ideal response?
In animal cloning, DNA donated from an adult stem cell
A. has to be obtained from an embryonic stem cell. B. has to be reprogrammed for the gene expression needed for early development. C. has to be from another species. D. has to be inserted into the egg cell before the egg cell's nucleus is removed.
In an existing population of plants and mycorrhizae, disease strikes and the mycorrhizae are killed. Which of the following would be impacted? Check all that apply.
A. the supply of organic food to the plant B. the binding of the soil and erosion C. the water supply to the plant D. the availability of mineral nutrients to the plant