Soal Biologi OSN Tingkat Nasional

Soal Teori OSN 2013
Di Batam,Kepulauan Riau,15-21 Mei 2013

Latihan UN IPA 2014

Lama tak jumpa!
Kali ini,postingannya untuk mempersiapkan UN SMP tahun ajaran ini,yaitu 2013/2014,terutama dalam pelajaran IPA dan Matematika...
Soal ini dibuat berdasarkan silabus UN IPA SMP 2013...

Berikut beberapa contoh soalnya : 

1.      Jika bunyi dibunyikan di ... maka tidak akan bisa didengar.

a.       Bulan

b.      Bumi

c.       Laut

d.      Udara

2.      Enzim yang tidak tahan pH ekstrim adalah...

a.       HCl

b.      Renin

c.       Ptialin 
d.      Tripsin
Soal lainnya dapat di download pada link di bawah 
Soal Latihan UN IPA SMP 2014 

Excretion System

Ever you see sweat after you do sport?
Or ever you see the vapor when you breath?

That's all is the result of excreation system
Excretion system has three part :
1. Excretion
2. Secretion
3. Defecation

And excretion system has 4(usual version)/5 organ (in any version) :
1. Ren consist of cortex,medulla, and pelvis.In a nephron,consist of glomerulus(in cortex part) , proximal and distal tubule,henle curve, and collecting tubule (in medulla part)
2. Hepar consist of two lobe,is place for changed the erythrochyte
3. Lung consist of two part,place for excrete H2O and CO2
4. Skin consist of epidermis and dermis
5*. Colon is place of defecating

Excretion is part to excrete liquid waste.That usually in organ 1,3, and 4
Secretion is part to secrete any need sustace.It happens in hepar
Defecation is part to excrete solid waste.That usually happen in colon

What did ren excrete?It excrete urine.Urine contains water,amonia,methane,and salt mineral.
The sugar and amino acid reabsrbed in proximal and distal tubule,also in henle curve. And the protein is filtered in glomerulus.
If people has sugar in the urine,that people got diabetes mellitus

Biology General Test (English version)

Now i'm back with Biology Test...

Choose the right answer between A,B,C, or D

Right : + 4

False : -1

Empty : 0

1.       Now,many exploitation happen,in land, and in  the sea.Especially in Indoensia,many coral catch for personal need.What is phyllum of coral?

a.       Porifers

b.      Coelentrata

c.       Mollusc

d.      Annelides

2.       Coral use as live place of many species.It is kind of...

a.       Symbiotic

b.      Mutualism

c.       Antibiotic

d.      Parasitism

3.       There is shark catch for it’s oil.That has same use with...

a.       Meat

b.      Morning sunlight

c.       Sunset

d.      Wheat powder

4.       Hormon that use for facultatif water reabsorption in the distal tube and colectivus tube is...

a.       Oksitosin

b.      Prolactin

c.       Adrenalin

d.      Vasopressin

5.       Every carrier woman of hemophilli...

a.       Get carrier gene from carrier mother

b.      Get carrier gene from father

c.       Death in first menstruation

d.      Death when had injury

6.       Schlerenchyme cell wall is thicked of ...

a.       Cellulose

b.      Lignin

c.       Pectin

d.      Starch

7.       Product of Chlorella...

a.       Jelly

b.      Nori

c.       PST

d.      Cosmetic

8.       Not different of herbivore and carnivore...

a.       Teeth

b.      Stomach

c.       Cecum

d.      Instetinum crasum

9.       There is characteristic of part body :

1.       Transportation

2.       Absorbtion

3.       In movement system

4.       In nerve system

Characteristic of muscle,nervous,epithelium, and connective tissue is...

a.       3,4,1,2

b.      3,4,2,1

c.       4,3,1,2

d.      4,3,2,1

10.   One time,Komodo island is “The new seven world wonders”.It is place protect animal with concept...

a.       Internal

b.      External

c.       In-situ

d.      Ex-situ

JtJust that,you can see any test later...

Soal OSP Biologi SMP 2013

13 April yang lalu beberapa siswa-siswi SMP terpilih di Indonesia telah mengikuti tes OSN 2013...Berikut adalah link soalnya :
Soal OSP Biologi SMP 2013
Sedangkan hasilnya diprediksikan akan keluar pada tanggal 24 April 2013...

Link silabus dan soal OSN SMP 2013

Akhirnya ketemu juga silabus dan soal OSNnya ^_^
Ini linknya :
Silabus OSN 2013 (lengkap)
*untuk biologi,ada penambahan 2 silabus,yaitu asam-basa dan dasar biokimia
Soal OSN Matematika Tingkat Kabupaten/Kota 2013(ketikan ulang)
Soal OSN Fisika Tingkat Kabupaten/Kota 2013(maaf kalau ada coretan2)
Soal OSN IPS Tingkat Kabupaten/Kota 2013(diketik oleh websitenya sendiri)
Soal OSN Biologi Tingkat Kabupaten/Kota 2013 (soal saja)
Soal OSN Biologi Tingkat Kabupaten/Kota 2013(belum sampai 100 soal + pembahasan)
Sekian silabus dan soalnya...

Science Aspect : Photosynthesis

Bio Aspect : Photosynthesis

It happens in plant cell which have chloroplast,not just in the leaf.
Light reaction happens in granum(make H+,ATP,NAPDH, and oxygen),and the dark reaction happens in stroma(make starch).
Info :
1. Experiment by Engellmann use algae(Spyrogyra) and bacteria.The movement bacteria to the algae called phototaxis...
2. Chloroplast consist of granum(is round part of chloroplast) and stroma(space in chloroplast).And has 2 membrane.
3. Especially happens in leaf tissue,is in palisade and spongy mesophyll tissue.
4. Just in cyanophyta(kind of monera kingdom),algae(kind of protist kingdom), and plant cell that have chloroplast.

Figure of a Chloroplast
Chemical Aspect : Photosynthesis 
Make starch (C6H12O6) and oxygen(O2) from water(H2O) and carbon dioxide (CO2) with light and chlorophyll in chloroplast.
Reaction :  H2O + CO2 + light + chlorophyll
Info : 
1.Chlorophyll consist of 2 :
Chlorophyll a (C55H12O5N4Mg) and Chlorophyll b (C55H10O6N4Mg)
2.C6H12O6 has empyric formula of (CH2O)n.
Empyric formula is formula that indicated minimum formula of a compound.
Example : Empyric formula of H2O2(hydrogen peroxide) is (HO)n
n indicated how much atom molecule of compound
3. Experiment : Sachs : Carbon(C : has atomic number 6) paper and alcohol (C2H5OH)
4.  Experiment : Ingenhouzh : Make oxygen(O2) has atomic number of 8