Why is the filamentous morphology of the water molds considered a case of convergent evolution with the hyphae of fungi?
a. Fungi are closely related to the water molds.
b. Body shape reflects ancestor-descendant relationships among organisms.
c. Filamentous shape is an adaptation for a nutritional mode as a decomposer.
d. Hyphae and filaments are necessary for locomotion in both groups.
e. Filamentous body shape is evolutionarily primitive for all eukaryotes.
Ans: c. Filamentous shape is an adaptation for a nutritional mode as a decomposer.
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CPEs are:
A. cytoplasmic sequences for polyadenylation. B. nuclear polyadenylation sequences. C. cytoplasmic proteins that disrupt the interaction between eIF4E and eIF4G. D. None of the above is correct.
Most solutes pass through the cytoplasmic membrane via
A. osmosis. B. diffusion. C. transport proteins. D. secretion.
Photosynthesis must provide a source of electrons and H+ ions because ______________
a. atmospheric CO2 must be oxidized by adding electrons b. CO2 must be reduced to produce sugars c. hydrogen atoms are added to oxygen to form water d. hydrogen ions and electrons react to produce hydrogen gas e. hydrogen ions and electrons are converted into oxygen gas
The cell membrane is composed of a bilayer of ________. These molecules have regions that are polar and nonpolar and are therefore ________
Fill in the blank with correct word.