Rabu, 24 Agustus 2011

DID YOU KNOW

Auksanometer
An instrument for measuring the longitudinal growth a plant, which consists of a control system equipped on the arc scale needle or needles that may be a thin line on the cylinder player. The principle works pulleys connected by a thread between the additional tip to be measured speed and load growth, if it moves signify that the plant did cause the needle scale growth is driven by the load to be increased or the needle on the cylinder causes the player there would scratch line on cylinder. Speed ​​of growth is shown of how the time scale increases.
Sources: Encyclopedia of science & life, 2003: 17

Growth without end beech

Beech tree seeds require 50 years to be a young tree that is able to reproduce, but like most plants, it does not stop growing. He continued to grow until the fall or die because of an illness.
Sources: Science and Technology windows volume II, 2001: 31




Bamboo tree

The fastest growing plant is bamboo. There is a bamboo that extends nearly one meter per day. Within a week can exceed the roof peak.







Sunflower

Sunflower is always directing his face toward the sun. He was facing towards the east in the morning and west at dusk.






Sap papaya contains papain
Sap papaya contains papain, an enzyme which serves as a meat tenderizer
Sources: Encyclopedia common for students vol 3, 2005: 85





Carbohydrate catabolism

In the afternoon, making the sugar glucose in the leaves faster than it can be used or transported to other tissues. Excessive glucose is converted to starch, which is stored in the leaves for some time. Then the material is converted into soluble sugars, which move from the leaves.
Sources: popular science volume 6, 2000: 75

Why does bread dough expands when mixed with yeast?
In respirasinya, yeast using an anaerobic manner, so as to form alcohol. For yeast, alcohol is only a waste. Waste energy is released in respiration is important for this yeast. Carbon dioxide produced in the fermentation of alcohol released in the form of bubbles which escape from the fluid or medium - another medium where yeast live in dalamya. Bubbles - bubbles that release carbon dioxide that causes dough to expand.
Sources: popular science volume 6, 2000: 75

Plants suck more carbon dioxide than it releases. As a result, plants release oxygen during the daytime.
Sources: popular science volume 6, 2000: 76

At the time of fasting or starvation, ubuh adapt through gluconeogenesis to prevent shortages kadr blood glucose (hypoglycemia) which can be bad for humans.
Sources: general encyclopedia for students, 2005
Foods from cheese and meat, if consumed in excess will increase levels of cholesterol in the body.
In addition to carbohydrates, proteins, fats, and vitamins, nuts also contain chemical compounds such as alkaloids, flavonoids, tannins, and amino acids kanavanin.
Sources: general encyclopedia for students vol. 5, 2005: 57
Jons Jakob Berzelius (1779 - 1848), chemist from Sweden, is the creator of the term "protein"
In 1840 the word "protein" is taken from the Greek meaning proteios
"Ultimate"
Sources: general encyclopedia for students vol 1, 2005: 125
To determine an organism's genetic information, DNA fragments from blood samples tested by Polymerase Chain Reaction (PCR). In the field of medicine, this method is often used for identification of genetic diseases, viruses, bacteria, and cancer.

Chromosome

in 1883 biologist Edouard van Bbeneden Belgium (1846-1910) found that the sex cells where the gene is located, has only half the normal number of chromosomes. Sex cells formed in meiosis, the chromosome is copied once but twice in self-defense cells. Thus, each of the four new cells have only half the number of initial cell chromosomes. Initial cells also have genital unique combination of genes for chromosome exchange charts before cleavage began.
Sources: windows Science and Technology, 2001

When various cells multiply, the organism as a whole to grow and develop the growth and cause cell defense chemical and physical changes that prevent the protoplasm become old and die. However, it should be explained that certain cells, such as muscle and nerve cells do not defend themselves after reaching the limit of its growth and once so, they continued their activities.
Polygenic inheritance
Human eye color in principle governed by a single gene. one allele of this gene produces brown eyes and others blue. However, eye color can also be influenced by genes "modifier", which alter the original color is produced. Different combinations of these genes, resulting in colors like light brown, green, and gray. This is known as polygenic inheritance, and this explains why some traits appear to mix.
Sources: windows Science and Technology, 2001

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