Both mosses and ferns "show their aquatic ancestry" because they:
A) require water for egg laying.
B) typically require water for sperm delivery to the egg.
C) lack a water-repellent cuticle.
D) have roots that must remain wet at all times.
Answer: B
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The removal of electrons from a compound is known as:
a. dehydration b. oxidation c. reduction d. phosphorylation e. a nonreversible chemical reaction
Which of the following statements about the liver is false? a. The liver converts urea to ammonia, a less toxic compound
b. Fat-soluble compounds such as vitamins D and A are stored in the liver. c. The liver converts excess carbohydrates and proteins to fat. d. The liver detoxifies alcohol.
How are bacteria the beginning and end of the nitrogen cycle? What will be an ideal response?
In the noncyclic pathway,
a. there is a one-way flow of electrons from photosystem I to photosystem II. b. ATP alone is produced. c. hydrogen ions are pumped into the thylakoid compartment. d. NADP+ accepts only H+. e. H+ accumulates in the stroma.