The right answer is 4).
The cytoskeleton is made up of biological polymers of proteins, sometimes called fibers because of their large size at the cellular level. They are classified into three categories:
Microfilaments: involves in cytoplasmic phenomena (division, endocytosis, migration).
Intermediate filaments: Maintenance of the nucleus structure.
Microtubules: Involved in the separation of chromosomes during mitosis.
While stress is a type of pressure given by force acting per unit area. Strain is the ratio of change in length and total length when stress occurs. Ratio of stress and strain gives Young's Modulus. The curve between stress and stress is linear as long as they are proportional to each other.
Types of energy is described below.
Explanation:
1.There are many different types of energy, which all fall into two primary forms – kinetic and potential. Energy can transform from one type to another, but it can never be destroyed or created.
2. Types of energy can be categorised into two broad categories – kinetic energy (the energy of moving objects) and potential energy (energy that is stored). These are the two basic forms of energy.
3.The different types of energy include
- Thermal energy-Thermal energy is created from the vibration of atoms and molecules within substances.
- Radiant energy-Also known as light energy or electromagnetic energy, radiant energy is a type of kinetic energy that travels in waves. Examples include the energy from the sun, x-rays and radio waves.
- Chemical energy-Chemical energy is stored in the bonds of atoms and molecules – it is the energy that holds these particles together.
- Nuclear energy-Nuclear energy is stored in the nucleus of atoms. This energy is released when the nuclei are combined (fusion) or split apart (fission). Nuclear power plants split the nuclei of uranium atoms to produce electricity.
- Electrical energy-Electrical energy is the movement of electrons (the tiny particles that make up atoms, along with protons and neutrons). Electrons that move through a wire are called electricity. Lightning is another example of electrical energy.
- Motion energy-Motion energy – or mechanical energy – is the energy stored in objects; as objects move faster, more energy is stored. Examples of motion energy include wind,
- Sound energy-Sound energy is the movement of energy through substances. It moves in waves and is produced when a force makes an object or substance vibrate.
- Elastic energy =Elastic energy is a form of potential energy which is stored in an elastic object - such as a coiled spring or a stretched elastic band
- Gravitational energy-Gravitational energy is a form of potential energy. It is energy associated with gravity or gravitational force
