<span>Pteridophytes (ferns) have true roots and vascular tissue that allows water to move farther
through the plant so that they don't depend on absorption of water held
on the plant as a mass of moss plants would.
Hope this helps!
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The answer should be D, water; reach equilibrium.
Osmosis is only the movement of water, down the water potential gradient. Movement of other substances should be involved in diffusion or active transport instead.
The goal of osmosis (also diffusion) is to make the concentration of substance (water potential for osmosis) the same. This is the meaning of equilibrium. Water molecules won't stop moving after equilibrium is reached, but there no net flow, meaning the amount of water molecules flowing from the left to right for example is same as the molecules flowing from right to left. So, the second answer is to reach equilibrium.
The answer is D.
They are renewable natural resources. They move round and round in cycles and never run out. For example a horse eats a plant the horse gets eating by another animal the cycle goes on an on an on
Answer:
A myosin head bound to actin
Explanation:
Cross bridge cycling explains the sliding filament theory according to which thin and thick filament slide against each other for muscle contraction. The two myosin heads extend form the thick filament. One myosin head has binding site for ATP and other head has binding site for actin from thin filament.
When myosin head binds to actin a cross bridge is formed. When ATP binds to the other head the bridge dissociates. Actin binding site is free and myosin tries to bind with other actin during which ATP is hydrolysed into ADP and Pi. Myosin along with the ADP and free Pi successfully binds to another actin molecule. The cross bridge formed generates a powerful force and ADP and Pi are displaced from it. The cross bridge is now free again for binding of next ATP molecule and the cycle continues.
What does the question say
