Cells Flashcards
Features of an animal cell
Ribosomes Mitochondria Cytoplasm Cell membrane Nucleus
Name features of a bacteria cell
Plasmid DNA Cell wall Cell membrane Ribosomes Chromosomal DNA Cytoplasm Slime coat Flagella
Features of a plant cell
Ribosomes Cell membrane Mitochondria Chloroplast Cell wall Vacuole Cytoplasm
Ribosomes
Protein synthesis
Nucleus
Contains DNA
Cell membrane
Controls what goes in and out of the cell
Mitochondria
Where aerobic respiration occurs
Cytoplasm
Where chemical reactions take place
Plasmid DNA
Controls cell genes and control cell activities
Cell wall
Supports cell and maintains its shape
Chromosomal DNA
Contains bacteria genes and controls cell activities
Slime coat
Stop cell drying out and being engulfed
Flagella
Moves the propel of the cell
Vacuole
Stores sap and keeps the cell rigid
Prokaryotic def
A cell lacking a true nucleus
Bacteria
Eukaryotic def
A cell with a true nucleus
Plant cell
Animal cell
Enzyme def
Biological catalyst
Speeds up
Chemicals unchanged
Name 3 enzymes
Carbohydrase
Protease
Lipase
Carbohydrates
Carbohydrates or starch - simple sugar eg glucose
Protease
Protein - amino acids
Lipase
Lipids -fat - glycerol - fatty acids
Denaturing def
Active site changes site
Causes of denaturing
Extreme temperatur and ph
Optimum temp for enzyme
37.5 - body temperature
Optimum ph
7-8 - but pepsin is 2
Haploid def
One set of chromosomes
Half normal number
Eg gametes
Diploid def
Two sets of chromosomes
Normal number
46
Actual size =
Image size / magnification
Magnification =
Images size / actual size
Image size
Actual size x magnification
Diffusion def
High concentration - low concentration
Respiration
Down concentration gradient
Osmosis
High concentration - low concentration
Water into root hair cell
Down concentration gradient
Active transport
Low concentration- high concentration
Energy required
Minerals to root hair cells
Down concentration gradient
