Important 3
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
卡片预览 (14 张)
A substance which prevents the coagulation of blood is called as .
anticoagulant
clotting in an undamaged blood vessel,
thrombosis
If the blood takes too long to clot
haemorrhage
-are organisms that cannot be seen without the use of microscope.
Microorganisms
the oldest life-forms on Earth and believed to have first appeared around 3.8 billion years ago.
Bacteria
Odest bacteria
Cyanobacteria
-circular or globular-shaped
COCCI (singular:coccus)
-rod-shaped (vibrio is a comma-shaped bacteria)
BACILLI(singular:bacillus)
-spiral-shaped
SPIRILLA(singular:spirillum)
prokaryotes that can survive environments with extreme conditions
Archaeans or Archaebacteria
-they live in extremely salty environments such as salt lakes, salt ponds, and brine solutions.
Halophiles or halobacteria
-are anaerobic organisms, which are organisms that survive without oxygen, that releases methane as a waste product.
Methanogens
-live in extremely high temperatures- higher than those preferred of thermophiles, usually 100 degrees Celsius, and in high concentration of Sulfur, such as in hot sulfur springs and deep sea hydrothermal vents
Thermophiles
-organisms that thrive under highly acidic conditions, usually pH2.0 or below.
Acidophiles