In aquatic systems, which of the following are highly
resistant to low DO levels in the sediment?
a. stoneflies and mayflies
b. carp and goldfish
c. Tubifex worms
d. ducks and geese
e. none of these
Answer: c
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Describe how the interaction of water with dual polarity lipid molecules establishes biological
membranes.
What will be an ideal response?How can predators influence the species richness and structure of communities?
a. Increasing the carrying capacity of their prey. b. Destabilizing competitive interactions among their prey. c. Increasing the population sizes of disease organisms. d. Increasing the population sizes of their prey. e. Reducing the population sizes of their prey.
Which characteristic is associated with cancerous cells?
a. well-differentiated b. large nucleus compared to cytoplasm c. always encapsulated d. abnormally slow growth e. symmetrical growth
Human body cells have 46 pairs of chromosomes. Body cells are known as _________ and are __________ These cells are created by mitosis .
Fill in the blank(s) with the appropriate word(s).