Cells and control

Biology higher

What is mitosis

Mitosis is the process of cell division that results in two genetically identical daughter cells, each with the same number of chromosomes as the parent cell. It is essential for growth, development, and tissue repair.

Stages of mitosis

include prophase, metaphase, anaphase, and telophase, which ensure accurate chromosome segregation.

Explain each stages of mitosis

Each stage of mitosis includes: prophase, where chromosomes condense and the nuclear envelope breaks down; metaphase, where chromosomes align at the cell's equator; anaphase, where sister chromatids are pulled apart; and telophase, where the cell prepares to divide and the nuclear envelope re-forms.

What is meiosis

Meiosis is a type of cell division that reduces the chromosome number by half, resulting in four genetically diverse gametes. It is essential for sexual reproduction and contributes to genetic variation.

Explain the term of Growth?

Growth refers to the process by which cells increase in size and number, contributing to the overall development and maturation of an organism.

Cell cycle

The series of phases that cells go through as they grow and divide, including interphase and the mitotic phase.

Factors affecting growth

Factors that influence the rate and extent of cell growth, including nutrients, environmental conditions, and genetic factors.

Importance of cell divison and growth

Cell division and growth are essential for the development, maintenance, and repair of tissues in an organism, enabling proper function and adaptation.

What is stem cells

Stem cells are undifferentiated cells with the potential to develop into various cell types in the body. They play a crucial role in growth, development, and tissue repair.

Types and uses of stem cells

Stem cells can be classified into embryonic and adult stem cells, each with unique properties and potential applications in regenerative medicine, therapy, and research.

What is the nervous system

The nervous system is a complex network of nerve cells and fibers that transmits signals between different parts of the body, coordinating actions and sensory information.

Compents and neurons of the nervous system

The components of the nervous system include the brain, spinal cord, and peripheral nerves, which work together with neurons to process and transmit information throughout the body.

Disease of nervous system

Any condition that affects the function of the brain, spinal cord, or nerves, leading to symptoms such as impaired movement, sensation, or cognition.

what is synapses

Synapses are the tiny gaps between two nerve cells where communication happens.

chemical signals and transmission process of synapses

Chemical singals; When a nerve impulse reaches the end of a neuron, it releases chemicals called neurotransmitters to send messages to the next neuron.

Transmission Process: The neurotransmitters cross the synapse and attach to receptors on the next neuron, triggering a new nerve impulse.