At the bottom or base of an energy pyramid are the ____
a. primary consumers
b. primary producers
c. secondary consumers
d. secondary producers
e. tertiary consumers
ANSWER: b
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Contact inhibition is best explained by which statement?
a. Contact between neighboring cells triggers reactions leading to inhibition of mitosis. b. As neighboring cells become more tightly packed together, their size is restricted and cytokinesis can no longer occur. c. As cell number increases, the protein kinases they produce compete with neighboring cells, inhibiting mitosis. d. As cell number increases, the level of waste products increases, consequently slowing metabolism leading to mitosis. e. As cell number increases, size restrictions inhibit protein synthesis.
Compare and contrast the structure and function of the saccule and utricle with that of the semicircular
canals with regard to maintaining equilibrium. What will be an ideal response?
What do many of the different kinds of allergies have in common?
A) They contribute to autoimmune disorders. B) All allergens are living things. C) They cause histamine release. D) They result in high blood pressure.
In what ways are we finding that the gut microbiota affects our health?
What will be an ideal response?