The answer is; A
When an impulse from the motor neuron reached the neuromuscular junction, the voltage-dependent calcium channels are activated and the neurotransmitter released from the presynaptic cleft. When the neurotransmitter binds to their receptors on the sarcolemma, the muscle fibers become depolarised; the calcium is released from their vesicles. The Ca2+ ions are important in the power stroke because they bind to troponin. Upon binding calcium, troponin moves tropomyosin away from the myosin-binding sites on actin. Powered by the energy from ATP molecule, the myosin is able to bind on the actin and slides over the actin filament.
Plasmogamy is the fusion of cytoplasm from different individuals. Which structure is not directly involved in the reproduction of at least one major group of fungi? A mycelium is a network of filaments that forms the body of a fungus.
Answer:
He should repeat the experiment and check for any unknown errors. He should do that because he might have made an unknown mistake that could have messed up his outcome.
Explanation:
The caterpillar population will develop resistance to the pesticide if any of them survived it because they were genetically different from the rest.