They increase the permeability of the lymph capillaries. Interstitial fluid enters the lymphatic vessels through the mini valves (which are overlaps of endothelial cells
from multiple lymph capillaries). The valves also prevent the backflow of the lymph from the vessels back to the tissues.
D. Life Cycle.
Think about it this way....
You start out as an infant, you grow older and olde each year and eventually you die. Your souls then goes on into another body and starts the cycle over..
- <u>To science we owe dramatic changes in our </u><u>smug self-image.</u><u> </u><u>Astronomy taught </u><u>us that our earth isn't the center of the universe but merely one of billions of heavenly bodies. </u>
- <u>From </u><u>biology </u><u>we learned that we weren't specially created by God but evolved along with millions of other species. </u>
Why was agriculture the worst mistake in human History?
- Along with epidemic diseases, starvation, and malnutrition, farming also contributed to the creation of severe class distinctions.
- Hunter-gatherers rely solely on the wild plants and animals they catch each day, with little to no food stored and no concentrated food sources, such as an orchard or a herd of cows.
Was the agricultural revolution good or bad?
- Between 1700 and 1870, it is thought that both total agricultural output and output per worker increased by a factor of 2. 7 times.
- Britain's agriculture is the most productive in Europe thanks to the Agricultural Revolution, with 19th-century yields up to 80% higher than the continental average.
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The correct answer is Broca's area. This is because Broca's area is the part in the cerebral cortex, specifically in the temporal lobe (not in the frontal lobe), and is responsible for producing language. Damage in the Broca's area will render the patient unable to speak words correctly and this is called expressive aphasia. The Wenicke's area on the other hand is also located in the temporal lobe and is responsible for interpreting language. Damage in the Wernicke's area will make all words to the patient non-understandable even when he can hear the words correctly and this is called receptive aphasia. Occam's area and Morton's area are not parts of the brain and does not exist.
Nice to know: There is a nerve tract that connects Broca's area to Wernicke's area called the arcuate fasciculus. Damage to the arcuate fasciculus will render the patient unable to repeat words.
Answer: The correct answer is- Polymerase chain reaction.
Polymerase chain reaction is a technique in molecular biology that is used to produce multiple copies of a piece of DNA molecule through multiple cycles of three stages that are-
1) Denaturation- The two DNA strands are separated ( so that template DNA are exposed) at higher temperature.
2) Annealing- Primers ( forward and reverse) are attached to the template DNA.
3) Extension- New DNA strand is synthesized using enzyme Taq polymerase that adds dNTPs ( deoxyribonucleoside triphosphate) according to the complementary sequences in the template.
