General Flashcards
What is the role of progesterone in the human female body?
Maintains the uterus lining so the fertilised egg can implant
Example of protoctista
Amoeba
Chlorella
Example of fungi
Mucor
Example of bacteria
Lactobacillus Bulgaris
Phneumoccocus
Example of virus
Tobacco mosaic virus, Influenza, HIV
Define specialised cells
Cells which have to develop certain characteristics in order to perform particular functions
They specialise by undergoing differentiation
What are stem cells
Cells which can differentiate their whole life
When an egg and a sperm cell fuse what is produced
A zygote
What is the effect of pH on enzymes?
If the pH is too high or low, the forces that hold the amino acid chains that make up the protein will be affected
Which will change the shape of the active site so the substrate no longer fits
Enzyme is denatured
Why do single-celled organism use diffusion
They have a large SA:VR and have low metabolic demands
Why do multicellular organisms have a gas transport system?
Their SA:VR is too small, so they have adaptions to allow molecules to be transported in and out of cells
Name a plant mineral ion
what it is used for
The deficiency
1
Magnesium
Chlorophyll
Leaves turn yellow
Name a plant mineral ion
what it is used for
The deficiency
2
Nitrate
Amino Acids
Stunted growth + leaves turn yellow
Name a plant mineral ion
what it is used for
The deficiency
3
Phosphates
