生物 · GCSE · Cells & Organisation

Xylem, phloem and translocation

gcse-biol-4-2-3-2b免费0:35Heddy 星级 7 颗中 3 颗，未达标

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你需要知道的

  • Xylem carries water and minerals up from the roots
  • Phloem moves dissolved sugars around the plant

这个短片讲了

0:28–2:11Animal and plant cell structuresgcse-biol-4-1-1-2
2:11–2:47Eukaryotic and prokaryotic cellsgcse-biol-4-1-1-1a
2:47–3:57Specialised cellsgcse-biol-4-1-1-3
3:57–4:36Light and electron microscopesgcse-biol-4-1-1-5a
5:07–5:42Cell division & growthbh4
5:42–6:57Stem cells: what they are and where they are foundgcse-biol-4-1-2-3a
6:57–8:18Diffusion and what changes its rategcse-biol-4-1-3-1a
8:18–8:51Osmosisgcse-biol-4-1-3-2
8:51–9:22Active transportgcse-biol-4-1-3-3
9:22–10:03Tissues → organs → systemsb2
10:54–12:32Digestive enzymes and bilegcse-biol-4-2-2-1b
12:32–14:19How enzymes workgcse-biol-4-2-2-1a
15:05–17:35The heart and double circulationgcse-biol-4-2-2-2a
17:35–18:36Blood vesselsb28
19:19–21:06Coronary heart disease and its treatmentgcse-biol-4-2-2-4
21:28–23:16Health and diseasegcse-biol-4-2-2-5
23:16–25:22Cancergcse-biol-4-2-2-7
25:22–25:46Plant tissues and the leafgcse-biol-4-2-3-1
25:46–26:21Xylem, phloem and translocationgcse-biol-4-2-3-2b
26:21–28:07Transpiration and stomatagcse-biol-4-2-3-2a
28:07–29:28Pathogens & diseaseb35
29:28–33:31Viral diseases: measles, HIV and tobacco mosaic virusgcse-biol-4-3-1-2
33:31–36:00Bacterial diseases: salmonella and gonorrhoeagcse-biol-4-3-1-3
39:01–41:23Vaccinationb85
41:23–43:08Antibiotics & resistanceb79
43:22–46:02Where medicines come fromgcse-biol-4-3-1-9a
46:36–51:13Rate of photosynthesis and limiting factorsgcse-biol-4-4-1-2a
51:13–54:20Aerobic respirationgcse-biol-4-4-2-1a
54:20–55:01Anaerobic respiration and fermentationgcse-biol-4-4-2-1b
55:01–56:37Metabolismgcse-biol-4-4-2-3
也讲到Digestion & nutritionb3
也讲到The gas exchange systemb24
也讲到Blood componentsb32
也讲到Fungal disease: rose black spotgcse-biol-4-3-1-4
也讲到Protist disease: malariagcse-biol-4-3-1-5
也讲到The body's defencesb36
也讲到DNA and the genomegcse-biol-4-6-1-3
Heddy 星级3/7, 未达标
  • 可信来源 · 已通过. 创作者本人上传，链接有效，可以在这里播放。
  • 对准知识点 · 待评. 老师看过：它主要讲的就是这个知识点。
  • 符合考纲 · 待评. 内容准确，符合现行英国考纲。
  • 聚焦 · 已通过. 只讲一个概念，短到可以一口气看完。
  • 无障碍 · 已通过. 字幕可靠，声音和画面清楚。
  • 适合青少年 · 待评. 适合 11 到 16 岁的学生，没有推销。
  • 有成效 · 待评. 由我们的学生评出：看了学得会、觉得有帮助、愿意看到最后。
★ 已通过 · ☆ 待评 · ✕ 未通过
我们的学生

学生人数还不够

我们自己学生的回答，第 7 颗星“有成效”就由这些决定。
Heddy 星级怎么评

为什么选它

A long AQA Paper 1 revision run-through suited to Year 10 and 11 students revising; 30 sections timed, the separate-science extras at the end are not mapped.

YouTube 频道：Primrose Kitten Academy | GCSE & A-Level Revision2026-10-16 核对