'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 生物的基本结构 1、生物的特征:应激性(能对外界刺激做出反应); 2、科学探究一般包括...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 细胞器的结构:线粒体、内质网、中心体、叶绿体、核糖体、溶酶体、液泡。细胞器是...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 特点不同:遗传物质的基本特性:相对的稳定性,能自我复制,前后代保持一定的连续...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 常见核苷类似物有拉米夫定,拉米夫定是一个抑制病毒的药物,并不能清除乙肝病毒,...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 生物的遗传和变异是通过遗传物质DNA实现的。在现代生物学领域中,一致公认生物的遗...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 主要功能:一、趋化性定向运动,沿着某些化学物质浓度梯度进行定向移动,聚集到释...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 纤维交织结构在地质学中又称为纤维变晶结构,纤维状的硬玉等矿物近乎定向排列或交...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 多巴胺和内啡肽都是人体内的两种激素,都能够提供快乐,但是产生的机理不一样。多...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 无氧呼吸产生ATP。无氧呼吸是指在厌氧条件下,厌氧或兼性厌氧微生物以外源无机氧化...
'); (window.slotbydup=window.slotbydup || []).push({ id: '8096091', container: s, size: '580,90', display: 'inlay-fix' });})(); 有动物,也有植物。动物:草履虫、变形虫、钟轮虫等。植物:蓝藻、衣藻、球菌、杆...