Science Biologi SMP Kelas 7
growth :
1. internal : hormones and gens2. external : SANi CaKep -> S : Suhu , A : air , Ni : nutrisi , Ca : Cahaya , Kep : kelembapan
hormones :
1. auxin : promotting cell alongation
2. cytokinine : promotting cell division
3. giberrellin : promotting germination
4. ethylene : accelerating the ripening fruits
type germination :
1. epygeal : hypokotil long
2. hypogeal : epykotil long
primary growth :
1. stem tips
2. root tips
methamorphosis
1. perfect (complete) : butterfly, fly, mosquito, bee => egg -> larva -> puppa -> imago
2. inperfect (incomplete) : grasshopper, beetles
puberty :
1. Primary
male : the maturity of sexual organ
female : menstruation
2. secondary
male : voice becomes deeper , growth of hair around the genital , increase chest width, etc
female : change of voice , growth of hair around the genital , increase of hip width , etc
embryo growth :
zygote -> morula -> blastula -> gastrula -> organogenesis -> fetus (bayi) -> tooder (balita) -> childood (anak-anak) -> adolescence (remaja) -> adulthood -> old age
joints :
1. hinge / engsel : elbow
2. pivot / putar : between atlas and axis
3. saddle / pelana : tumbs
4. ball and socket / peluru : between humerus and scapula
digestive system : mouth -> pharynx -> esophagus ->stomach -> small intestine -> large intestine -> anus
1. mouth : tongue , teeth , saluvary gland
2. small intestine :
duodenum -> digestive enzyme from pancreas
jejunum -> MaLaS -> Ma : Maltase , La : Laktase , S : Sakarase
ileum : absorbing
3. large intestine : colon (reabsorbing water and deterloration) and rechim
enzyme :
1. mouth : ptialin : amilum -> maltose
2. stomach : laHPeR
H : HcL : kill the pothogenic
Pe : Pepsin : protein -> pepton
R : Renin : milk -> kasein
3. pancreas : AmiT Lis
Ami : Amilase : amylum -> glucose
T : tripsin : pepton -> amino acid
Lis : lipase : fat -> fatty acid and glucerol
disorder :
1. infection :
- disentri
- typus
- hepatitis
- apendicitis
2. non infection :
- maag
- ambeien
- gastric cancer
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