Movement in and out of cells 细胞的运动 Biological molecules 生物分子 Enzymes 酶 Plant nutrition 植物营养学 Human nutrition 人类营养学 Transport in plants 植物中的循环 Transport in animals 动物中的循环 Diseases and immunity 疾病与免疫 Gas exchange in humans 人体中的气体交换 Respiration 呼吸作用 Excre...
Animals transmit not only DNA but also other molecules, such as RNA, proteins and metabolites, to their progeny via gametes. It is currently unclear to what extent these molecules convey information between generations and whether this information changes according to their physiological state and envi...
Breathing and Respiration: Respiratory organs in animals (recall only); Respiratory system in humans; Mechanism of breathing and its regulation in humans-Exchange of gases, transport of gases and regulation of respiration Respiratory volumes; Disorders related to respiration-Asthma, Emphysema, Occupational...
Transport Definition In general, the termtransportis the movement (of something) from one place to another. It can be used as an action word for carrying, moving, or conveying something from one location to another. In biology,transportis the act or the means by which molecules, ions, or ...
Plants also use ABC transporters, particularly NtPDR1, to actively transport antimicrobial metabolites. (7) Plants also employ active transport when they absorb nutrients (e.g. chlorine and nitrates) from the soil into the vacuole. In humans and animals, active transport is employed in many ...
Recent progress in high-throughput sequencing has uncovered an astounding landscape of small RNAs in eukaryotic cells. Various small RNAs can be classified into three classes based on their biogenesis mechanism and the type of Argonaute protein that they
Why xylem transport is unidirectional and phloem transport bi-directional. 0Ans Explain pressure flow hypothesis of translocation of sugars in plants. 0Ans Describe transpiration pull model of water transport in plants. What are the factors influencing transpiration? How is it useful to plants?
Fig. 1. The production of cloned cattle reflects the changing use of ruminants in research. Sheep are often selected for studying areas such as ruminant physiology and nutrition. These animals provide obvious benefits over the use of cattle in research from the standpoint of size, ease of handli...
Transport in Plants and Animals:Transport of nutrients and other substances across the membrane of a plant and animal's cell takes place through various means such as osmosis, diffusion, and active transport. Transported substances either move from a region of high concentration to a region of ...
[2] Why multicellular animals require transport systems · Diffusion cannot satisfy the need/ diffusion is too slow · Longer distances to reach some cells · To take materials close to cell Xylem Xylem是运输水的一个系统,而且不需要plant费任何力气水自然而然就可以从地底下运到树叶的尖尖上。