Protein Structure - Primary, Secondary, Tertiary, & Quarternary - Biology
5:22
YouTubeThe Organic Chemistry Tutor
Protein Structure - Primary, Secondary, Tertiary, & Quarternary - Biology
This biology video tutorial provides a basic introduction into the four levels of protein structure - primary, secondary, tertiary and quarternary structure. The primary structure of a protein is based on the sequence of amino acids. The secondary structure is based on localized shapes such as the alpha helix or the beta pleated sheet. The ...
已浏览 77.1万 次2018年9月28日
Paragraph Writing
How to Write a Paragraph
4:23
How to Write a Paragraph
YouTubeAmal Mansour
已浏览 193.2万 次2020年10月16日
How to Write a Good Paragraph ⭐⭐⭐⭐⭐
5:56
How to Write a Good Paragraph ⭐⭐⭐⭐⭐
YouTubeLovely English
已浏览 248.6万 次2017年8月10日
How to Write a Paragraph for Kids: Teaching Lesson in English
3:04
How to Write a Paragraph for Kids: Teaching Lesson in English
YouTubeGRASPhopper
已浏览 67.1万 次2020年10月20日
热门视频
Chemistry - Atomic Structure - EXPLAINED!
11:45
Chemistry - Atomic Structure - EXPLAINED!
YouTubeThe Organic Chemistry Tutor
已浏览 66.5万 次2017年9月23日
Unit Cell Chemistry Simple Cubic, Body Centered Cubic, Face Centered Cubic Crystal Lattice Structu
17:22
Unit Cell Chemistry Simple Cubic, Body Centered Cubic, Face Centered Cubic Crystal Lattice Structu
YouTubeThe Organic Chemistry Tutor
已浏览 91.8万 次2021年1月14日
6 Most Common Types of Organizational Structures (Pros & Cons) | From A Business Professor
16:46
6 Most Common Types of Organizational Structures (Pros & Cons) | From A Business Professor
YouTubeBusiness School 101
已浏览 47.8万 次2022年10月10日
Paragraph Structure
Basic Paragraph Structure | English Writing Skills | 2020
11:54
Basic Paragraph Structure | English Writing Skills | 2020
YouTubeWorldwide Speak
已浏览 8.4万 次2020年9月21日
How to write a paragraph | txxxc paragraph writing format and structure (with examples PDF!)
6:17
How to write a paragraph | txxxc paragraph writing format and structure (with examples PDF!)
YouTubeEnglish with Mr Henriquez
已浏览 2.6万 次2021年4月25日
Paragraph Structure
1:59
Paragraph Structure
YouTubeHull Uni Library
已浏览 1.2万 次2019年10月24日