Cells, Tissues And Organs Flashcards
Cytoplasm
Where chemical reactions take place
Definition for nucleus
Control the cell
Cell membrane
Controls what goes in and out of the cell
Mitochondria
Energy is released during aerobic respiration
Ribosomes
Protein synthesis takes place
In which part of the cell is energy released during respiration?
Mitochondria
Why is it possible to see a bacterial colony but not a single bacterium?
When bacteria multiply they from a colony which can be seen by the naked eye
What’s a yeast cell made up of?
Nucleus, cytoplasm, call membrane and a cell wall
What’s a bacteria made up of?
Plasmids, genetic material, cytoplasm, cell membrane, cell wall, slime capsule and flagella
What cells need a lot of protein?
Gland cells which produce enzymes
What cell in a plant will have lots of chloroplasts in them?
Mesophyll cells
Why do muscle cells need a lot of mitochondria?
To release energy during aerobic respiration
What is a root hair cell made up of?
Nucleus, large permanent vacuole and root hair
What is a sperm cell made up of?
Acrosome, nucleus, mitochondria and tail
Diffusion
Random spreading of particles of a gas or substance in solution
Net movement
Transportation of particles from a high concentration to a low concentration
Concentration gradient
Difference in concentration between two areas
What determines the net movement of particles across a cell membrane?
The difference in concentration
What is meant by a tissue?
A large group of cells with similar functions
What does glandular tissue produce?
Enzymes and hormones
Plant tissues include
Epidermal tissue - covers the plant
Mesophyll - can photosynthesise
Xylem and phloem - transport substances around the plant
What are organs made of?
Tissues
What tissues make up an organ?
Muscular tissue - to churn stomach contents
Glandular tissue - produce digestive juices
Epithelial tissue - cover outside and inside of stomach
Insoluble molecules
Non edible food
Soluble molecules
Edible food
Organs of the digestive system
Liver, stomach, pancreas, small intestine and large intestine
Where is soluble food absorbed?
Small intestine
Where is saliva produced?
Salivary glands
What chemical produced by the liver aids digestion?
Bile
Differentiation of cells
Less purposeful cells develop into a cell with an important function
