A researcher examines a piece of oak tree bark under a microscope. He notices many small holes or spaces within his bark sample. What are these areas?
A. stomata
B. suberins
C. pericycles
D. lenticels
D
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Match the following names with the correct statements.
_______1. This German scientist proposed the theory of biogenesis—that life can arise only from preexisting life. _______2. This Dutchman built single lens microscopes as a hobby and is believed to be the first person to see live bacteria and protozoa. _______3. This German physician developed a step-by-step scientific method to prove that a particular microorganism causes a particular disease and contributed to what is known as “the germ theory of disease.” _______4. This French scientist discovered that microorganisms are responsible for fermentations, contributed to disproving abiogenesis, and contributed to what is known as “the germ theory of disease.” a. Robert Koch b. Louis Pasteur c. Rudolf Virchow d. Antony van Leeuwenhoek
Which best describes the source of B. cepacia infections?
a. Rice paddies b. Medical devices c. Oropharynx of animals d. Rodents
A __________ dominates bryophyte life cycles. Fill in the blank(s) with the appropriate word(s)
Decomposition reactions are commonly ________ reactions
A) endothermic B) exchange C) exothermic D) anabolic E) dehydration