What is a secondary endosymbiont and how are they related to algae?
What will be an ideal response?
Secondary endosymbionts are organisms that engulfed a primary symbiont (perhaps through phagocytosis), which had also previously engulfed another organism. All algae possess chloroplasts (which evolved by engulfing cyanobacteria). These primary endosymbiotic algae, or "true algae," are products of a single ancestral endosymbiosis that also gave rise to land plants.
Secondary endosymbiotic algae arose from protists that engulfed a primary endosymbiont. Cryptophyte algae are an example of secondary endosymbiotic algae that contain chloroplast, the vestigial primary-host cytoplasm, and the vestigial nucleus or nucleomorph from the engulfed primary endosymbiont.
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An anticodon has the sequence GCG. What amino acid does this tRNA carry? What would be the effect of a mutation that changed the C of the anticodon to a G?
What will be an ideal response?
Which species of cyanobacteria is sold commercially?
a. E. Coli b. Salmonella c. Lactobacillus d. Spirulina e. Rhizobium
Because golden rice was developed to deal with problems of ____________________ deficiency, it is considered a(n)
____________________. Fill in the blank(s) with the appropriate word(s).
Differentiation is the process in which cells _____________.
A. mature into larger cells B. change from one type of muscle to another C. change to repair injuries D. turn on all the genomic genes E. express different subsets of their genes during development