The first bacterium discovered by
Anthony van Leeuwenhoek in 1674 using a homemade microscope. The term bacterium
was introduced at a later date by Ehrenberg in 1828, taken from the Greek word
βακτηριον which means "small stick".
Bacteria, from the Latin word bacterium (plural,
bacteria), is the largest group of living organisms. They are very small
(microscopic) and mostly unicellular (single celled), with a relatively simple
cell structure with no nucleus / nucleus, cytoskeleton, and organelles such as
mitochondria and chloroplasts. Their cell structure is described further in the
article about prokaryotes, because bacteria are prokaryotes, to distinguish
them from organisms that have more complex cells called eukaryotes. The term "bacteria"
has been applied to all prokaryotes or to...
Senin, 07 Mei 2012
Saturn
Saturn is a planet in the solar
system known also as the ringed planet. Saturn is very far distance from the
Sun, because that Saturn did not seem very clear from the Earth. Saturn evolved
in 29.46 years. Every 378 days, Earth, Saturn, and Sun will be in a straight
line. In addition to evolve, Saturn also rotates in a very short time, which is
10 hours 14 minutes.
Saturn has a low density because most of the
constituent substances in the form of gases and liquids. Saturn's core is estimated
to consist of solid rock with atmospheric gas composed of ammonia and methane,
it is not possible life on Saturn.
Saturn's rings are very unique, consisting of
thousands of rings around the planet. Ring-forming material is still unknown.
The scientists suggest that the ring was not possible because...
Adjective or Relative Clauses
Adjective clause is also called the
Relative Clause is part of the sentence (clause) that provide information on
the person or thing that preceded it. Relative terms similar to Clause
Adjective Clause. Called Adjective Clause because he explains things or people
that preceded it. Called Relative Clause because he connects (to relate) the
object or the person behind the phrase. Relative clause begins with the
conjunctive who, whom, Whose, which, that, with the following functions
Who: describe the person as a subject
Whom: people describe it as an object (to replace me,
you, us, him, her,
them, it)
Whose: describe the person as the owner (replacing
my, your, our, his, her, Their,
its)
Which: describes the object as subject and object
That explains a person or thing as either subject...
Jumat, 06 April 2012
Active Voice & Passive Voice
Active sentence (active voice) is the subject
of his sentence which does the job, on the contrary, the passive voice (passive
voice) is the subject of his sentence which is the work by the object of the
sentence. Active voice is more often used in everyday life than the passive
voice. However, often we find the passive voice in newspapers, articles in
magazines and scholarly writings. Passive voice is used as the object of the
active voice is more important information than its subject.
Rumus :
Simple past
tense :
Active => verb 2 (ed)
Passive => was/were + verb 3
Simple
present tense :
Active => verb 1 (+ s/es)
Passive => Is/am/are + verb 3
Present
perfect tense :
Active => has/have + verb 3
Passive => has/have + been + verb 3
Present continous
tense...
Jumat, 16 Maret 2012
Subject-Verb Agreement
The most
important rules in English language is between subject and verb must be in
agreement. That is if the subject is
singular then the verb must be singular too. Otherwise, if the subject is
plural then the verb must be plural too.
1. Singular Subject – Singular Verb
The definition of singular subject is subject
pronoun he, she, and it, or nouns which can be replaced with he, she, or it.
While the definition of singular verbs is verb1+es/s, is/was, and verb phrase
as: is/was + verb-ing/verb3, has +verb3, has been verb-ing and has been
verb3.
Singular patterns of subject-verb singular is presented in the following table:
Singular Subject
Singular Verb
Tenses
1
He/She/it
Verb1 + es/s
Simple Present
2
He/She/it
is + verb-ing
present continuous
3
He/She/it...