Answer the following statements true (T) or false (F)
1. All materials passing from one hyphal cell to another must diffuse across the septal wall.
2. Conidia are sexual spores produced by mushrooms.
3. Lichens are monophyletic.
4. Many kinds of ascomycetes and basidiomycetes have lost the ability to reproduce sexually.
1. FALSE
2. FALSE
3. FALSE
4. TRUE
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The enzyme formate dehydrogenase (FDH) splits formic acid to H2 and CO2 and is crucial to survival during fermentation because if fermentive intermediates were allowed to accumulate within the cell, the internal pH would become far too ________ to support viability.
A. alkaline B. hypotonic C. acidic D. hypertonic
Dinosaurs flourished during the ____ era
a. Archaean b. Paleozoic c. Mesozoic d. Cambrian e. Cenozoic
Which of the following is not a potential advantage of most types of asexual reproduction in wild plant species?
1.clones are well suited to the environment that the parent inhabits
2.lack of variation that enhances the odds for survival when environmental conditions change
3.rapid colonization of disturbed habitats
4.requires less energy than producing flowers and seeds
The self-splicing of Group I introns
a. requires energy from the hydrolysis of ATP. b. gains energy from exergonic reactions involving inorganic compounds. c. occurs in a series of transesterifications that require no hydrolysis for energy. d. requires energy from the hydrolysis of GTP. e. gains energy directly from an electron transport chain.