Which of the following options lists major events in the history of life on Earth in the proper order, from earliest to most recent?
A) first prokaryotes, photosynthesis, colonization of land by plants and fungi, first eukaryotes
B) first eukaryotes, photosynthesis, colonization of land by plants and fungi, first prokaryotes
C) first prokaryotes, first eukaryotes, photosynthesis, colonization of land by plants and fungi
D) first prokaryotes, photosynthesis, first eukaryotes, colonization of land by plants and fungi
Answer: D
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Each of the following citric acid cycle enzymes is subject to allosteric regulation except
A) isocitrate dehydrogenase. B) ?-ketoglutarate dehydrogenase. C) malate dehydrogenase. D) fumarate hydratase. E) pyruvate dehydrogenase.
Which of the following is a function of stems?
a. sexually reproduce b. absorb nutrient minerals c. produce new tissues d. transport dissolved gases e. anchor plants
Plants compete for light, a response known as ____, in which plants tend to grow taller when closely surrounded by
other plants. a. epinasty b. phototropism c. shade avoidance d. shade tolerance e. thigmotropism
Which of the following tissue types are found only in the zone of cell division of the root tip?
A. ground meristem B. endodermis C. xylem & phloem D. None of these are restricted to just the zone of cell division of the root tip. E. All of these are restricted to the zone of cell division of the root tip.