input: OPTIONS:
- electric case
- electric neutral
- electric half
- electric charge Now, answer this question: Answer the following question given this paragraph: Electromagnetism is associated with charge and is a fundamental force of nature, like gravity. If charges are static, the only manifestation of electromagnetism is the Coulomb electric force. In the same way that gravitational force depends on mass, the Coulomb electric force depends on the property known as electric charge. Like gravity, the Coulomb electric Force decreases with the square of the distance. The Coulomb electric force is responsible for many of the forces we discussed previously: the normal force, contact forces such as friction, and so on - all of these forces arise in the mutual attraction and repulsion of charged particles. Q: What property does coulomb electric force depend upon? A:
A:
output: electric charge

Answer the following question given this paragraph: Q: What step, involving placement of a substance on the stigma, precedes fertilization? A:

OPTIONS:
- mitosis
- spawning
- hibernation
- pollination

Answer: pollination

Problem: OPTIONS:
- activation
- extraction
- interstitial
- refractory
Q: Answer the following question given this paragraph: The deadly nerve gas Sarin irreversibly inhibits acetycholinesterase. What effect would Sarin have on muscle contraction? After depolarization, the membrane returns to its resting state. This is called repolarization, during which voltagegated sodium channels close. Potassium channels continue at 90% conductance. Because the plasma membrane sodiumpotassium ATPase always transports ions, the resting state (negatively charged inside relative to the outside) is restored. The period immediately following the transmission of an impulse in a nerve or muscle, in which a neuron or muscle cell regains its ability to transmit another impulse, is called the refractory period. During the refractory period, the membrane cannot generate another action potential. The refractory period allows the voltage-sensitive ion channels to return to their resting configurations. The sodium potassium ATPase continually moves Na+ back out of the cell and K+ back into the cell, and the K+ leaks out leaving negative charge behind. Very quickly, the membrane repolarizes, so that it can again be depolarized. Q: The period immediately following the transmission of an impulse in a nerve or muscle, in which a neuron or muscle cell regains its ability to transmit another impulse, is called the ______ period. A:
Answer: refractory

Problem:OPTIONS:
- hydrolysis
- digestion
- sexual reproduction
- photosynthesis

Answer the following question given this paragraph: Q: Chloroplasts are present only in cells of eukaryotes capable of what process? A:
****
A: photosynthesis

Answer the following question given this paragraph: Tight junctions are composed of strands of transmembrane proteins embedded in the plasma membranes of two adjacent cells. The extracellular domains of these proteins directly join to one another. These joining proteins associate with peripheral membrane proteins located on the intracellular side of plasma membrane. These peripheral proteins anchor the strands to the actin component of the cytoskeleton, effectively forming a molecular complex that joins together the cytoskeletons of adjacent cells. The major types anchoring proteins of tight junctions are the claudins and the occludins. Q: What are the major types anchoring proteins? A:
OPTIONS:
- semimetals and occludins
- amino and fatty acids
- claudins and semimetals
- claudins and occludins
claudins and occludins

Answer the following question given this paragraph: An aquifer is a saturated layer of rock or soil. Q: What is defined as a saturated layer of rock or soil? A:
OPTIONS:
- river bank
- artesian well
- culvert
- aquifer

Answer:
aquifer