Life Science mock examination Flashcards
Nutrition
Is a process of obtaining a inorganic or organic substance from which organisms obtain energy and raw materials for growth and develpement
Organic nutrients
Are nutrients that consist of carbon and they are made by plants during photosynthesis
enorganic nutrients
Are simple nutrients that do not contain carbon and they do not have any energy levels
examples of organic nutrients
protein and fat
examples of enorganic nutrients
water and mineral salts
deficiency disease of carbohydrates
marasmus
symptoms of marasmus
thin weak body
food sources of fat
butter , cheese
effects of obesity
can cause heart attacks
can cause high blood preasure
how to prevent / reduce obesity
exercise regularly , avoid a diet with alot of food containing fat
deficiency disease of fibre
constipation
symptoms of constipation
feaces become dry and hard
food sources of fibre
fruits , maize , cereal
deficiency disease of water
dehydration
deficiency disease of vitamin c
scurvy
symptoms of scurvy
gums swell and bleed
poor healing of wounds
deficiency disease of vitamin d
rickets
macronutrients
are nutrients that are need in large quantities if there is a lack of these nutrients in a body it will resuly in the developement of malnuration disorder
macronutrients
are nutrients that are need in large quantities if there is a lack of these nutrients in a body it will resuly in the developement of malnuration disorder
direct proportional
when the independent variable increase and the dependent variable increases at the same time
indirectly proportional
when the independent variable decreases and the dependent variable increases at the same time
which one of these is a plany cell ( cillated cell or xylem vessels)
xylem vessels
permeable membrane
lets al molecules pass through
partialy permeable membrane
lets only some molecules come through
