Which trophic level has the LEAST biological magnification?
A) Primary producers
B) Secondary consumers
C) Tertiary consumers
D) Heterotrophs
E) Primary consumers
A
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Four of the following are fungal diseases. Which one is the exception?
a. Candida infections b. Ringworm c. athlete’s foot d. vaginal yeast infection e. Tuberculosis
The Latin phrase omnis cellula e cellula refers to a cellular principle. Which of the following statements is the best interpretation of this phrase?
A) Tissues are composed of similar cells. B) Cells generally are found in clusters. C) All cells arise only from preexisting cells. D) Organs are composed of tissues and cells. E) The cell is the basic unit of structure.
All of the following are true EXCEPT one. Choose the exception
A) The great diversification of animals occurred during the Cambrian explosion. B) For most of biological history, life was confined to aquatic habitats. C) The evolution of multicellularity took place after the origin of the eukaryotes. D) The first organisms to colonize land were animals.
How are Gram-positive and Gram-negative flagella different?
a. Flagella are only found in Gram-negative bacteria. b. A Gram-positive flagellum has only two rings in its basal body; Gram-negatives each have four. c. A Gram-positive flagellum does not have a membrane covering its filament; A Gram-negative flagellum does. d. Each Gram-positive flagellum contains a hook; gram-negatives do not.