Work and power are different because work involves force and distance while power involves force and velocity, power involves force and mass
Force refers to an interaction which can change the motion of the unopposed object, it is the push or pull mechanism experienced by any object, is a vector, has both magnitude and direction.
Force can be classified into two types, like Contact Force which can be applied to the objects, three subtypes of forces are Frictional force, Applied force, Normal force.
Non-Contact Force defined as force of the body without any contact, example is Gravitational force. The SI power unit of force is the Newton(N).
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Answer:
False
Explanation:
The organisms that live today share ancestry with older and simpler life forms. This is totally true information and it is through this ancestry that living beings are able to share genetic factors with each other.
Ancestrality is the term given to the process that allows the emergence of a descendant with genetic modifications, having as a point of origin a simpler and older form of life. An example of ancestry can be seen between the human being and the chimp, where both are descendants of the same older and simpler ancestor.
B. sporophyte.
C. spore.
D. gamete.
Answer:The correct option is C) Cell walls are rigid. Small molecules like water or oxygen can pass through them.
Explanation:
Cell walls are found in plant cells and some other organisms. They provide structural support and protection to the cell. The cell wall is made up of a rigid material called cellulose, which gives it its strength.
Cell walls are permeable, meaning that they allow certain substances to pass through them. Small molecules like water and oxygen can pass through the cell wall via small pores or channels. However, larger molecules, such as proteins and carbohydrates, cannot pass through the cell wall.
This selective permeability of the cell wall allows the cell to control the movement of substances in and out of the cell, maintaining its internal environment. It also helps prevent the cell from bursting under osmotic pressure.
In summary, cell walls are rigid structures composed of cellulose. They are permeable, allowing small molecules like water and oxygen to pass through, while blocking larger molecules.