Answer the following statements true (T) or false (F)
1. During the energy investment phase of glycolysis there is a decrease of free energy that allows later reactions to be exergonic.
2. The ability of bread to rise is mainly a function of the CO2 produced during oxidative phosphorylation rather than that produced from fermentation.
3. The aerobic breakdown of glucose yields 34 to 38 ATP, while the anaerobic breakdown of glucose yields 20 ATP.
4. Secondary metabolites like caffeine are produced mainly from plant sources.
1. FALSE
2. FALSE
3. FALSE
4. TRUE
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Compare a pseudocoelom to a coelom.
A. A coelom is completely enclosed by mesoderm whereas a pseudocoelom has an outer covering of mesoderm and an inner one of endoderm. B. A pseudocoelom is completely enclosed by mesoderm whereas a coelom has an outer covering of mesoderm and an inner one of endoderm. C. The coelom is enclosed by ectoderm and the pseudocoelom is enclosed by endoderm. D. The pseudocoelom is enclosed by ectoderm and the coelom is enclosed by endoderm. E. The coelom is enclosed by ectoderm and the pseudocoelom is enclosed by mesoderm.
Which of the following processes likely depends on the activity of a proton pump? Pick the best answer!
(a) Sugar uptake (b) Osmosis (c) Uptake of nitrate (d) One of the above (e) Two of the above
Which Ecdysozoan phylum contains members that have a segmented body encased in a rigid exoskeleton made of chitin plus other materials?
a. Annelida b. Nemertea c. Nematoda d. Arthropoda
The evolution of biochemical molecules started on Earth ____.
A. after the appearance of prokaryotic cells B. long before any cells emerged C. after the appearance of eukaryotic cells D. after the appearance of eukaryotic cells but before the appearance of multicellular organisms E. after the appearance of multicellular organisms