Answer:
Nucleus
Explanation:
Nucleus directs all the cell activities of the cell and contain genetic materials and all genetic information.
D. Carbohydrates are made of many sugars.
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Answer:
The nervous system can cause the contraction of all three types of muscle tissue. For example, skeletal muscle contracts to move the skeleton, cardiac muscle is influenced as heart rate increases during exercise, and smooth muscle contracts as the digestive system moves food along the digestive tract.
