Flashcards
B2.1-2
Flashcards do conjunto (10)
- 1DiffusionDiffusion is the spreading of the particles of a gas,or of any substance in solution, resulting in a net movement from an area of high concentration to an area of lower concentration
- 2OsmosisThe net movement of water molecules from a region of high water potential to a region of lower water potential, through a partially permeable membrane
- 3What is the function of: a) Nucleus b) Cell membrane c) Cytoplasm d) Mitochondria e) Ribosomesa) Controls the activities in the cell
b) Controls what enters and exits the cell
c) Where most of the chemical reactions take place
d) Site of respiration
e) Site of protein synthesis - 4What is the function of these plant organelles: a) Chloroplasts b) Vacuolea) The site of photosynthesis
b) Filled with cell sap - 5What does a bacterial cell consist of?A bacterial cell consists of cytoplasm and a
membrane surrounded by a cell wall; the
genes are not in a distinct nucleus - in a strand of DNA or plasmids - 6What does a yeast cell consist of?Yeast is a single-celled organism. Yeast cells have a nucleus, cytoplasm and a membrane surrounded by a cell wall.
- 7Give an example of a specialised cell, it function and how it is adapted to do that functionExample:
A sperm cells job is to fertilise an egg, it has a tail to swim quickly to the egg, also it has a lot of mitochondria in its head for extra energy as well as digestive substances to get through the membrane - 8What is the correct order: organ, cell, organ system, tissuecell - tissue - organ - organ system
- 9Name the 3 different types of tissue and their functionsMuscular tissue, which can contract to bring about movement
Glandular tissue, which can produce substances such as enzymes and hormones
Epithelial tissue, which covers some parts
of the body. - 10Describe what different tissues do in an example human organMuscular tissue, to churn the contents
Glandular tissue, to produce acid and enzymes
Epithelial tissue, to cover the outside and the inside of the stomach.
Informações
- Descrição
- Flash cards made using the Biology GSCE AQA specification and other sources. Only B2.1 and B2.2
- Criado por
- jade kirby · abr 2015
- Atualizado
- 26 nov 2016
- Visualizações
- 72
- Tags
- Avaliação