Biology Paper 1

• What do you call cells that are similar to each other and have a similar function

  Tissue
• What are undifferentiated cells commonly known as ?

  Stem cells
• This contains genetic information and controls the activities in the cell

  Nucleus
• It's made from lots of different tissues working together

  Organ
• Part of the cell where enzyme controlled reactions take place

  Cytoplasm
• Part of the cell that controls the movement of substances in and out of the cell

  Cell membrane
• Part of a plant cell that contains chlorophyll

  Chloroplast
• Where in the cell does aerobic respiration take place

  Mitochondria
• What is the function of the cell wall in plants

  Strengthens
• Which part of a plant cell carries out protein synthesis ?

  Ribosomes
• Where can you find cell sap

  Large permanent vacuole
• What are the small rings of DNA called in a prokaryotic cells ?

  Plasmids
• How many micrometers in a mm

  1000
• What tissue transports water and minerals in plants ?

  Xylem
• This is the movement of gas or a liquid particles from a high to low concentration

  Diffusion
• This is the movement of water from a dilute solution to a more concentrated solution

  Osmosis
• What must happen before mitosis can begin ?

  DNA relpication
• Enzymes are biolgical

  catalysts
• What part of a cell makes enzymes ?

  Ribosomes
• Give the scientific name for the destruction of an enzyme by a high temperature

  Denature
• Temperature and [blank] affect the rate of enzyme reaction

  concentration, pH
• Name the enzyme made by the salivary glands

  Amylase
• Name the enzyme that works in the acidic conditions of the stomach

  Protease
• Name the enzyme that works on lipids

  Lipase
• Name the enzyme that produces glucose from starch

  Amylase
• Proteins are broken down by enzymes into [blank]

  amino acids
• Lipids are broken down into fatty acids and ?

  Glycerol
• How many enzymes are made by the small intestine ?

  3
• Apart from the small intestine, what other organ makes 3 digestive enzymes ?

  Pancreas
• What organ produces bile ?

  Liver
• Where is bile stored ?

  Gallbladder
• What is the pH of bile ?

  8-12 , alkaline
• Bile breaks down large droplets of fat into smaller droplets. What is the name of this process ?

  Emulsification
• These small droplets give the enzyme a larger what to work on ?

  Surface area
• What is the first part of the small intestine called ?

  Duodenum
• What theory explains the way enzymes work ?

  Lock and key
• What part of the enzyme accepts the substrate ?

  Active site
• What do we call microorganisms that cause infectious disease ?

  Pathogens
• Which microorganism reproduces inside cells ?

  Viruses
• Which microorganism reproduces on the surface of the cell ?

  Bacteria