Answer
The first significant supporting evidence for a biological cause of a mental disorder was the 19th century discovery that the psychotic disorder called general paresis was caused by the same bacterial microorganism that causes <u>syphilis</u>.
Syphilis
Syphilis is caused by bacteria “<em>Treponema pallidum</em>”. This bacteria cause infection when enter through broken skin of mucus membrane of genitals. It is sexually transmitted disease.
General paresis
When syphilis is untreated it lead to damaging of brain and cause a disease called general paresis in which mental activity become dysfunctional. The syphilis bacteria generally attack on brain and nervous system and begin about 10-30 years after syphilis infection.
When you scrape your original sample onto your agar plate, you cannot see how much single bacteria or where the individual bacteria is on your plate- since it's invisible to the naked eye. But when the bacteria start to multiply, you start to see the individual colonies. (from the single bacteria, it begins to multiply within 20 min. maybe after 1-2 days you'll see a colony, meaning there are millions of bacteria)
for example, if you take a water sample and spray it onto an agar plate, you won't know which parts of the agar plate the bacteria landed on. however, when they start to multiply from a single bacterium, you'll see where each starting bacterium was because now you can see a whole bunch of bacteria. (remember that a colony contains millions of bacteria- which allow it to be visible to the naked eye).
so you count the number of colonies, and that'll tell you how much bacteria you started with. if you look at the size of the colonies, you're only looking at how long you allowed the bacteria to incubate (since from the single bacteria that you started with, it's only multiplying and growing outwards).
Answer:c
Explanation:because it takes away carbon and greenhouse gases from long term carbon stores an releases it into the atmosphere at a short term rate through combustion
A 16-culled embryo is called a Morula
Answer:
<h2>c. Both alleles are recessive, but they must be located at different gene loci.</h2>
Explanation:
Given:
If he inbred normal mice and obese mice , all the F1 mice are normal.
F1 and F1 interbred : 8 are normal and 2 are obese.
obese and obese = all are obese.
hence O1 proved as recessive allele.
in second experiment :
O2 is proved as recessive allele.
But when both obese mice of different laboratories are inter-crossed, all the offspring are normal, hence it is proved that Both alleles are recessive, but they must be located at different gene loci.