Considering DNA sequence similarities and common pigments, the _____ are the most likely ancestor of land plants
a. euglenoids
b. dinoflagellates
c. brown algae
d. red algae
e. green algae
E; All of the choices are photosynthetic, but none of the other examples seem to have a close phylogenetic relationship to the other. Green plants have the same pigments as green algae, as well as cell wall compounds, and share a greater degree of DNA sequence similarity than plants do to any of these other organisms.
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True or False: Ecdysozoans include insects and make up more than half of all known animal species
A. true B. false
Electron flow through the transport chains causes hydrogen ions to be pumped from:
a. the matrix to the intermembrane space b. the cytoplasm to the intermembrane space c. the intracellular fluid to the cytoplasm d. cytoplasm to the mitochondria e. the intermembrane space to the matrix
In most true fungi, the individual cellular filaments of the body are called:
a. mycelia b. hyphae c. mycorrhizae d. asci e. yeast
Which of the following statements is true of non-homologous end joining (NHEJ)?
A) it is a double-strand repair pathway B) it is error-prone C) it is error-free D) it utilizes the sister chromatid as a template for repair E) both A and B