CIE IGCSE Biology: 复习笔记：6.1.2 Chlorophyll
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OCR A Level Biology:复习笔记2.6.11 The Use of Stem Cells
Stem Cells in Research & Medicine Use of embryonic stem cells Due to their ability to differentiate into multiple cell types, stem cells have huge potential in the therapeutic treatment of dise...
CIE IGCSE Biology: 复习笔记：6.1.11 Identifying Leaf Structures in a Dicotyledonous Plant
CIE IGCSE Biology: 复习笔记：6.1.11 Identifying Leaf Structures in a Dicotyledonous Plant Identifying Leaf Structures in a Dicotyledonous Plant You will be expected to identify the following struct...
OCR A Level Biology:复习笔记2.6.10 Stem Cells in Animals & Plants
Stem Cells in the Bone Marrow The stem cells found in bone marrow are multipotent adult stem cells This means they can only differentiate into erythrocytes (red blood cells), monocytes, neutrophils...
OCR A Level Biology:复习笔记2.6.9 Stem Cells
Features of Stem Cells A stem cell is a cell that can divide (by mitosis) an unlimited number of times Each new cell (produced when a stem cell divides) has the potential to remain a stem cell or t...
OCR A Level Biology:复习笔记2.6.8 The Organisation of Cells
The Organisation of Cells As seen on the last page, in complex multicellular organisms eukaryotic cells become specialised for specific functions. For example: Epithelial cells in the small intesti...
2023年AIME考试时间已定，AMC和AIME区别在哪里？
作为全球影响力最大，适配范围最广的数学学术活动，美国AMC学术活动被越来越多的家庭选择并参加。AMC作为全球信任度最高的数学学术活动，名校都高看一眼，如果能够拿到奖项，对申请的意义自然不言而喻。从小学到...
2022泰晤士世界大学声誉排名发布，这个排名有意义吗？
一所大学，拥有好的声誉，代表着社会的认可，也就意味着有更大的获得资源、机会和各项支持的可能性。16日下午，2022泰晤士世界大学声誉排名发布，这个排名有意义吗？ 本次排名依据来自世界各地的29606名经验丰富...
OCR A Level Biology:复习笔记2.6.7 Specialised Cells
Specialised Cells In complex multicellular organisms, eukaryotic cells become specialised for specific functions These specialised eukaryotic cells have specific adaptations to help them carry out ...
OCR A Level Biology:复习笔记2.6.6 The Significance of Meiosis
Significance of Meiosis Having genetically different offspring can be advantageous for natural selection Meiosis has several mechanisms that increase the genetic diversity of gametes produced Both ...
OCR A Level Biology:复习笔记2.6.5 The Stages of Meiosis
Stages of Meiosis Meiosis is a form of nuclear division that results in the production of haploid cells from diploid cells It produces gametes in plants and animals that are used in sexual reproduc...
OCR A Level Biology:复习笔记2.6.4 The Significance of Mitosis
Significance of Mitosis Mitosis is the process of nuclear division by which two genetically identical daughter nuclei are produced that are also genetically identical to the parent nucleus The proc...
