Activation energy .
a. is the amount of energy required during an activity such as flagellar motion
b. requires the addition of nutrients in the presence of water
c. is lowered by the action of organic catalysts
d. results from the movement of molecules
Ans: c. is lowered by the action of organic catalysts
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In a relaxed skeletal muscle _____
A) thick and thin filaments overlap to the greatest extent possible B) sarcomeres are at their shortest length C) calcium is released from the sarcoplasmic reticulum D) the Z lines are farthest apart
The gene locus governing flower color in snapdragons exhibits ____ because heterozygous individuals appear pink
while homozygous individuals are either white or red.
a. codominance b. equilibrium c. autosomal dominance d. complete dominance e. incomplete dominance
What type of bonds hold nitrogenous bases from complementary strands together?
a. ionic bonds b. polar covalent bonds c. non-polar covalent bonds d. hydrogen bonds
All the following have some sort of hardened
endoskeleton EXCEPT a. sea stars. b. sea urchins c. fish. d. sea anemones. e. turtles.