Until : Cell functions/ Cell division Cells Cell theory: -All living things are composed of one or more cells. -The cell is the smallest entity that retains the properties of life. -New cells arise only from cell that already exists. Structure of the cell: The outer boundary (plasma membrane) similar to a city wall It is constructed with molecules called lipids (fat and oils) The cell membrane is composed of: -Proteins and Lipids .
Mitochondria converts’ fuel -the most common fuel consume is sugar (glucose) – The energy is generated through a chemical process called cellular respiration. – it breaks down sugar to release energy into small molecules called adenosine troposphere (TAP) – More active = more mitochondria will contain ex) muscle cells contain more mitochondria than fat. Outer membrane similar to the city walls to separate different compartments. Nucleus is found in the centre of the cell. The control centre of the cell.
Classified in woo ways : Eukaryotic ( no true nucleus) or Prokaryotic (true nucleus) Inside the nucleus is where the chromosomes are found. (long threads of genetic instructions) Units of chromosomes are determined through genes. Chromosomes composed of nucleic acids and proteins called DNA Copied DNA are called RNA which are used to make proteins. TProteins are manufactured in different types.
Googol apparatus packages proteins in membranous sacs. Vesicles are proteins filled sacs It travels from plasma towards the outside of the cell in process called exoticism (remove) It enters inside the cell into the cell membrane in process called indications (enter) The cell has an organelle that has interconnected canals called the endoplasmic reticulum. Ones the cell eventually wears out, the parts are recycled in a specialized compartment called lissome. Cytokines provides routes of transportation (series of fibrous proteins)
Microorganisms and misconstrues helps orient the cell It contains vacuoles which is a fluid-filled compartment and stores sugars, minerals, proteins and water. Supports tutor pressure-if the plants aren’t watered they shrink Plasmids produce and store food Chloroplasts are plasmids specialized in photosynthesis with green pigment chlorophyll Amylase’s -colorless plasmids MITOSIS Process of a single cell dividing into two. It is important because it forms human life. Cell that divides: parent cell.
Two cells resulting from cell division are referred to as daughter cells 46 horseshoes in a human body (23 egg cells + 23 sperm cells) W -the surface area of a cell and the volume of the cytoplasm affects the exchange of materials and waste. Cell division increase in the surface area- to- volume ratio