IB DP Biology: HL復習筆記3.1.8 Sex Determination
Sex Determination Sex is determined by an?entire chromosome pair?(as opposed to most other characteristics that are just determined by one or a number of genes) Females?have the sex chromosomes (pa...
IB DP Biology: HL復習筆記3.1.7 Chromosome Number
Haploid Haploid nuclei have one chromosome of each pair Haploid cells contain?one complete set of chromosomes (n) In other words, they have?half?the number of chromosomes compared to normal body ce...
2022上海中考成績會提前公布嗎？
2022上海中考成績會提前公布嗎？剛剛，上海市教委發布重要信息：鑒于本市新冠肺炎疫情防疫形勢，取消名額分配現場綜評，10分滿分計入。同時，調整本市中招錄取階段日程安排，中考成績由原定的8月20日提前至8月6日...
IB DP Biology: HL復習筆記3.1.6 Eukaryotic Chromosomes
Eukaryotic Chromosomes Chromosomes in eukaryotic cells are?one,?very long?DNA molecule associated with proteins The main proteins present are the large, positively charged globular proteins called?...
IB DP Biology: HL復習筆記3.1.5 Prokaryotic Chromosomes
Prokaryotic Chromosomes The DNA in prokaryotic cells is significantly different from the DNA found in eukaryotic cells Prokaryotes?do not contain a nucleus?therefore the DNA is located in the cytop...
美國Top20-25院校解析！熱門專業、錄取數據、申請要求一網打盡！
今天，為各位同學整理了美國Top20-25院校的介紹。感興趣的話，就趕快下拉閱讀吧！ 點評 01處在 Hollywood, 所以藝術和電影方面的專業都是很出色的，畢業后也因學校的地點會提供很多的就業機會。 02洛杉磯是一個擁...
IB DP Biology: HL復習筆記3.1.4 Genome
Genome The?total of all the genetic information in an organism?is called the?genome?of the organism This is a?complete set of genes?present within every cell of an organism This includes?all genes?...
IB DP Biology: HL復習筆記3.1.3 Mutation
Mutation A?gene mutation?is a change in the sequence of base pairs in a DNA molecule; this may result in a new allele Mutations occur?all the time?and?at random There are certain points in the cell...
IB DP Biology: HL復習筆記3.1.2 Alleles
Alleles Eg. blood types A, B, AB and OEach allele results in a different variation of that trait A gene codes for a specific polypeptide that can affect a specific trait or characteristic in an org...
IB DP Biology: HL復習筆記3.1.1 Genes
Genes & Polypeptides A gene is a section or?length of DNA?that codes for a?polypeptide Genes are?heritable factors?that influence specific?characteristics?(via the polypeptides produced) Charac...
美國Top27-35大學全解析！地理環境、熱門專業、師生比例一文搞清！
今天，我們為各位同學整理了美國Top27-35院校的介紹，包括每個院校的地理環境、熱門專業、師生比例等。此外，還有每所院校的本科錄取數據、申請要求以及對學校的點評。 點評 01知名校友：Neil Armstrong (第一個...
IB DP Biology: HL復習筆記2.8.4 Skills: Separating Photosynthetic Pigments
Practical 4: Separation of Photosynthetic Pigments Separation of photosynthetic pigments by chromatography Plants contain several different?photosynthetic pigments, which?absorb different wavelengt...
