Flashcards

GCSE (B2) Cells,

Shahzeb Ali Inglês 15 flashcards

Flashcards do conjunto (15)

1What are the different parts of an Animal Cell ?
2What are the different parts of a Plant Cell ?
3What are the differences between a Plant cell and an Animal cell? (3)There are 3 additional parts to a plant cell, which are not found in an animal cell.
- a vacuole
- a cell wall
- chloroplasts
4Define DiffusionDiffusion is the random movement of particles from a high concentration to a low e.g.
5Define OsmosisOsmosis is the movement of particles especially water across a semi-permeable membrane from a high concentration to a low e.g.
6What are Specialised Cells ? Give 3 examples and say how this helps them carry out their job.
7Define Tissuea tissue is a group of similar cells that work together to carry out a particular function.
8Define Organ(s)An organ is a group of different tissues that work together to perform a particular function e.g. the stomach
9Define Organ System(s)An organ system is a group of organs working together to perform a particular function e.g. the digestive system
10What is the equation for Photosynthesis ?
11What is the structure of a leaf ?
12What is the function of each layer in the structure of a leaf ?
13How do plants use Glucose ?Remember C.RPSS (Corpse)
Cell wall - Glucose is converted into cellulose to make strong cell walls
Respiration
Protein Synthesis -Glucose is combined with nitrate ions to make amino acids to be assembled into proteins.
Stored in seeds - Glucose is turned into lipids (fats and oils) for storing in seeds.
Stored as starch - Glucose is turned into starch and stored in leaves roots and stems.
14Define EnzymeAn enzyme is a biological catalyst that speeds up a reaction without being used up itself.
They're made up of proteins.
15What can affect an enzymeTemperature will affect how an enzyme works, if the temperature is too high the enzyme loses shape and stops working we call this denatured.
pH also affects how an enzyme works, if it's too high or to low it interferes with the bonding of an enzyme therefore changing its shape and causing it to become denatured
All enzymes have an optimum pH, which means this is the pH they work best at.