Which of the following is NOT a bryophyte?
1) Sequoia tree
2) Moss
3) Liverwort
4) None of the above
Sequoia tree
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Scientists have learned the full extent of viral abundance on earth because
A. a wide variety of microbes is available to act as hosts for these viruses. B. metagenomic sequencing has identified viruses in a broad variety of environments. C. the final step of the viral life cycle, release of mature viruses and cell lysis, releases millions of viruses. D. viruses are known to grow on all life forms: animal, plant, fungi, and bacteria.
Which of the following is a disadvantage of gas exchange in water, as compared to gas exchange in air?
a. Air is less dense than water.
b. Air contains a higher concentration of oxygen. c. Less energy is needed to move air over a gas exchange surface. d. Oxygen diffuses more slowly through air than water. e. Air is less viscous than water.
In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the production of _____
A) ATP, CO2, and ethanol (ethyl alcohol) B) ATP, CO2, and lactate C) ATP, NADH, and pyruvate D) ATP, pyruvate, and acetyl CoA
What hormone plays a role in the closing of stomata in response to water stress?
A. Auxin B. Ethylene C. Abscisic acid D. Cytokinin