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托福培训
托福考试动态
2016-12-21 16:28
来源：新东方
作者：上海新东方
下面为大家整理的是关于SAT2生物专业词汇中以字母P为开头的相关词汇，非常详细。大家在备考自己的SAT2生物考试的时候，可以把份词汇作为查缺补漏的单词表，也可以作为备考前期的准备进行参考。
Pancreas(胰)
A digestive organ that releases enzymes into the small intestine. Also an endocrine gland that regulates glucose levels in the blood by the release of insulin or glucagon from specialized cells called islets of Langerhans.
Parathyroid(甲状旁腺)
Four small glands embedded on the posterior surface of the thyroid gland. The parathyroid glands produce a hormone that regulates the level of calcium in the bloodstream.
Parthenogenesis(单性生殖)
Asexual reproduction in which an unfertilized gamete (usually female) produces female offspring. Parthenogenesis vastly increases the speed at which a population can grow, though it results in a loss of genetic diversity among members of the population.
pelagic zone(远洋带)
The open-ocean zone at the greatest depth in a marine habitat. This zone is divided into a photic (down to 600 feet below the water’s surface) and aphotic zone.
peptide bond(肽键)
The bond between the amino acids in a protein. Formed by dehydration synthesis.
peripheral nervous system (PNS/外周神经系统)
The pathways by which the central nervous system receives sensory information from the body and sends commands to muscles. The peripheral nervous system is divided into two halves. The sensory system brings information in from the body, while the motor system sends commands out to muscles.
Peristalsis(蠕动)
The rolling motion of smooth muscle that moves food along the alientary canal. Includes the passage from the esophagus to the stomach, the churning action of the stomach, and the passage through the small intestine.
pH
A scale for measuring the presence or absence of hydrogen ions in solution. Values between 0 and 7 indicate an excess of hydrogen ions. Such solutions are called acids. Values between 7 and 14 indicate the presence of compounds that counteract the effects of hydrogen ions. Such solutions are called bases. At pH 7, solutions are neutral.
以上就是以字母P开头的SAT2生物专业词汇的全部内容,包括了详细的汉语翻译和英语含义解析。大家在备考SAT2生物考试的时候，重要的一个备考项目就是记忆相当数量的专业词汇。所以对于上面列举的这些单词，大家一定要在备考中加以熟悉和记忆。
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托福培训
托福考试动态
