A common characteristic of Choanoflagellida is
A. presence of a plasmodium.
B. silica covering.
C. space beneath the plasma membrane.
D. a single, unique mitochondria.
E. funnel-shaped, contractile collar.
Answer: E
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Top-down factors that can control the population sizes of plants or animals include which of the following factors? Select all that apply.
_____ the density of herbivores _____ an extended period of drought _____ healthy populations of secondary carnivores _____ the presence of a fungal pathogen _____ nutrient-poor soil _____ levels of primary producers in the ocean
An ant and an elephant are walking through the jungle, which one does the greater buoyant force act
What will be an ideal response?
Which reaction is the aerobic respiration of glucose?
a. C6H12O6 + 6 H2O ? 6 CO2 + 12 H2 + energy b. C4H12O4 + 2 H2O + 6 CO2 ? 6 O2 + ATP + energy c. C4H12O4 + 12 O2 + 6 H2O ? 6 CO2 + ATP + energy d. C6H12O6 + 6 O2 + 6 H2O ? 6 CO2 + 12 H2O + energy e. C4H12O2 + 6 O2 + ATP ? 6 CO2 + 12 H2O + energy
What is an advantage of the economy of scale?
a. division of labor c. sexual reproduction b. ability to eat more food d. multicellularity