Which of the following statements about essential elements is FALSE?
a. An element with only one role in plant metabolism may still be essential.
b. An essential element is necessary for normal growth and reproduction.
c. Plant seeds in some cases contain enough of an essential element to sustain the adult plant.
d. An essential element may occasionally be functionally replaced by another element.
e. Some essential elements are required in only trace amounts.
D
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The directional nature of the DNA double helix is observed in the
A) locations of the hydrogen bonds. B) locations of the numbered carbons in the sugars. C) locations of the oxygen atom in the phosphate. D) double helix when it is separated into single strands.
Which of the following statements about Malassezia is FALSE?
A. It is part of the microbiota of the skin. B. It causes phaeohyphomycosis. C. It is a basidomycete. D. It causes pityriasis. E. It tends to develop into a chronic infection.
A 28-year-old woman was gardening when a rose thorn pricked her finger, which later became infected. A sample is taken of the exudate and sent to the microbiology laboratory. Small, round, cigar-shaped structures are microscopically observed. She is most likely infected with which type of fungi?
a. Malassezia furfur b. H. capsulatum c. S. schenckii d. Fonsecaea pedrosoi
Sea anemones are ____
a. polyp forms of cnidarians b. medusa forms of cnidarians c. spongiforms of cnidarians d. spongiforms of echinoderms e. polyp forms of echinoderms