红细胞又称红血球或红血细胞，是血液中最多的一种血细胞。红细胞中含有血红蛋白，因而使血液呈红色。血红蛋白能和空气中的氧结合，因此红细胞能通过血红蛋白将吸入肺泡中的氧运送给组织，而组织中新陈代谢产生的二氧化碳也通过红细胞运到肺部并被排出体外。血红蛋白更易和一氧化碳相合，当空气中一氧化碳...
Do viruses have RNA? Most viruses have either RNA or DNA as their genetic material. The nucleic acid may be single- or double-stranded. The entire infectious virus particle, called a virion, consists of the nucleic acid and an outer shell of protein. Do viruses code for ribosomes? Viruses...
Manipulation of naturally occurring defense mechanisms in host plants is an effective and sustainable approach for plant disease management. Various natural compounds, ranging from cell wall components to metabolic enzymes have been reported to protect plants from infection by pathogens and hence provide ...
But in what form do the transferred genes physically make that intracellular journey – as RNA, as cDNA, as pieces of organelle DNA, or as whole organelle chromosomes? Current views focus upon cDNA as the vehicle, based upon some examples from plants. But other mechanisms, involving direct ...
Bennett 摘要: Highlights plant genome initiatives, calling for a need for further understanding of plant genomes. Importance of plants; Description of data on plant genomes; Aspects of plant gene structure; Number of plant uses. DOI: 10.2307/43991 被引量: 85 年份: 1998 ...
DNA (deoxyribonucleic acid) and RNA (ribonucleic acid) have a number of key differences. For one, RNA has uracil where DNA has thymine. For another, DNA contains deoxyribose sugar while RNA contains ribose sugar, and DNA is double-stranded while RNA is single-stranded. However, these two ...
I. Viruses that infect plants have single stranded RNA and viruses that infect animals have either single or double stranded RNA or double stranded DNA. II. Bacterial viruses or bacteriophages are usually single stranded RNA viruses. View Solution Viruses cause several diseases in plants and animal...
鹦鹉热嗜衣原体PCR试剂盒Chlamydophilapsittaci适用于各种 RNA制品的反转录反应以及随后的PCR扩增。它采用M-MLV进行反转录反应,能够获得较长的反转录产物。同时,在20ul反转录体系和50ul PCR反应体系中,还可以一次性得到足够量的PCR产物用于后续的克隆实验。本试剂盒中配制的酶均为进口的酶。RT酶采用进口的M-MLV,所...
During the recovery interval, the RNA polymerase is stalled to be activated by a pause-breaking factor in the subsequent drought. Drought leads to DNA demethylation near drought-response genes, with genetic control of the process. Progenies of the drought-exposed plants can better adapt to drought...
There is a difference in only one base of an RNA molecule which is different from that of DNA. The four nitrogenous bases of the RNA are Adenine,...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your ...