Which of the following factors may have favored the evolution of simple multicellularity?
A. All of these options are factors that may
have influenced the evolution of simple
multicellularity.
B. increased ability to avoid predation
C. increased ability to maintain a position in
the water column
D. increased ability to remain in a location
that is favorable for growth
E. increased ability to generate water
currents for feeding
A
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Carbohydrate digestion begins in the ____
a. mouth b. stomach c. small intestines d. large intestines e. liver
The organelle involved in the oxygen-requiring process by which the energy harvested from macromolecules is used to generate ATP is the:
A. ER. B. mitochondria. C. chloroplasts. D. nucleus. E. lysosome.
Classification.The terms below relate to the movement of materials and membranes. Answer the following questions by selecting the correct term.
A. Spontaneous movement of molecules B. Fluid with a high solute concentration relative to another fluid C. Movement of molecules would be out of this fluid D. Movement of molecules would be into this fluid E. Fluid with a low solute concentration relative to another fluid F. Movement of molecules across a membrane would be equal G. Fluid with the same solute concentration relative to another fluid H. Movement of water molecules across a membrane I. Pressure that prevents the movement of water into a cell despite a hypotonic internal environment J. Pressure from a fluid against a boundary that contains it
A(n) __________ is a group of genes that code for related or identical proteins as a result of gene duplication events
a. ortholog b. gene family c. homolog d. chromosome e. none of the above