Division and differentiation in human cells

Cards (20)

  • plasma membrane- selectively permeable, controls entry + exit of substances
  • cytoplasm- fluid containing proteins, fats, oils and sugars, site of chemical reactions
  • nucleus- controls cellular activities, contains DNA, blueprint for manufacture of protein
  • nuclear membrane- membrane made of fats + protein, surrounds nucleus
  • pore in nuclear membrane- allows mRNA to exit nucleus
  • mitochondria- site of aerobic respiration, energy released during breakdown of glucose
  • ribosome- site of protein synthesis, found of endoplasmic reticulum and in cytoplasm
  • lysosome- contains enzymes, digest unwanted materials and the cell on death
  • In a developing embryo, tissues such as muscle
    and nerve are produced by?
    C. somatic cells dividing by mitosis
  • Which of the following is most likely to identify correctly cell types P and Q?
    B
  • In a developing embryo, tissues such as muscle
    and nerve are produced by
    somatic cells dividing by mitosis
  • the nucleus is the site of mRNA synthesis and controls cell activities and contains DNA
  • mitochondria is the site of aerobic respiration
  • ribosomes are the site of protein synthesis
  • plasma membrane controls the movement of materials into and out of the cell
  • the nuclear membrane is composed of fats and protein which surrounds the nucleus
  • pore in the nuclear membrane is a hole in the nuclear membrane which allows mRNA to exit the nucleus
  • ribosome is found on structures called the endoplasmic reticulum and in the cytoplasm
  • lysosomes contain enzymes which digest unwanted material and the cell itself on death
  • Describe what happens during differentiation.
    Cells become specialised/are given specific functions OR Genes are being expressed.