Kinesin is a motor protein that moves
A) Flagella back and forth
B) Vesicles toward the minus end of microtubules
C) Organelles toward the plus end of microtubules
D) Vesicles toward the plus end of actin
E) Muscle cells
Answer: C) Organelles toward the plus end of microtubules
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What is adiabatic cooling?
A. The effect of rainfall on windward side of a mountain. B. The influence of polar air masses on tropical mountains. C. Increasing elevation leads to a decrease in air pressure and cooler air. D. The influence of sinking cooler air in a Hadley cell. E. The enhanced cooling caused by cloud cover at higher elevations.
What extracellular plant signaling molecules can exert their effects at very low concentrations?
a. hormones b. peptide c. enzymes d. pheromones e. plasmodesmata
All animal cells contain the same type and quantity of organelles?
a. true b. false
The first photosynthetic autotrophs used the energy of the sun to split H2O because it is not very electronegative
______________ Indicate whether the statement is true or false.