cels worksheet

• did the mitochondria or chloroplast get engulfed first in endosymbiosis?

  mitochondria
• which cell transport to hydrophobic molecules use to get across cell membrane and why?


  simple diffusion, the hydrophobic tails in the phospholipid bi-layer enable other lipids to pass through.
• The process of a cell taking up bulk quantities of specific substances which may be present at only low concentrations in the extracellular fluid is called receptor-mediated endocytosis
• The tree of life represents what?

  hypothesis about the evolution of all life
• what evidence was used to construct the tree of life?

  DNA sequences
• lysosomes have what function?

  fuse with incoming food vacuoles or unwanted/damaged organelles and break down/digest them.
• Carbohydrates are made up of what monomer?

  Glucose
• DNA are made up of what monomer?

  nucleotides
• Proteins are made up of what monomer?

  Amino acids
• Lipids are made up of what monomer?

  fatty acids or ring monomers such as cholestrol
• what are ribosomes made up of?

  amino acid chains.