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In this lesson, we'll be looking at the cell cycle. This is the lifespan of a eukaryotic somatic cell. A somatic cell is any cell in the body of an organism, except for sex cells such as sperm and egg cells. The cell cycle describes the sequence of cell growth and division. A cell spends most of its life a state called interphase. Interphase has three phases, the G1, S, and G2 phases. Interphase is followed by cell division, which has one phase, the M phase. Together these four phases make up the entire cell cycle. G1 of interphase is sometimes called growth 1 or gap phase 1. In G1, a cell is busy growing and carrying out whatever function it's supposed to do. Note that some cells, such as muscle and nerve cells, exit the cell cycle after G1 because they do not divide again. A cell enters the S phase after it grows to the point where it's no longer able to function well and needs to divide. The S stands for synthesis, which means to make, because a copy of DNA is being made during this phase. Once DNA replication is complete, the cell enters the shortest and the last part of interphase called G2, also known as growth 2 or gap phase 2. Right now, it's enough to know that further preparations for cell division take place in the G2 phase. Now that interphase is over, the cell is ready for cell division, which happens in the M phase. The M phase has two events. The main one is mitosis, which is division of the cell's nucleus, followed by cytokinesis, a division of the cytoplasm. So, at the end of M phase, you have two daughter cells identical to each other and identical to the original cell. Let's review. The cell cycle describes the life cycle of an individual cell. It has four phases, three in interphase and one for cell division. Most cell growth and function happen during G1. The cell enters the S phase when it needs to divide. In this phase the cell replicates its DNA. Replication just means the cell makes a copy of its DNA. In G2, the cell undergoes further preparations for cell division. Finally, we have cell division in the M phase. The M phase consists of mitosis, which is nuclear division, and cytokinesis, or division of the cytoplasm. We'll explore the details of mitosis and cytokinesis separately
- Subjects:
- Biology
- Keywords:
- Cell cycle
- Resource Type:
- Video
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Others
Our research group has been addressing metacognitive processes in psychosis therapeutically since the early 2000s. Through humorous exercises, individuals with psychosis should gain insight into unhelpful cognitive distortions (e.g., jumping to conclusions, overconfidence in decisions) and improve their metacognitive abilities (“thinking about thinking”).
- Course related:
- RS3450 OT for Psychosocial Dysfunction and RS5362 OT for Psychosocial Dysfunction
- Subjects:
- Rehabilitation Sciences and Psychology
- Keywords:
- Metacognition Metacognition -- Study teaching
- Resource Type:
- Others
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Others
The IEA is committed to shaping a secure and sustainable energy future for all
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Others
本站由清华大学信息化技术中心支持创办，由清华大学 TUNA 协会运行维护。 清华大学 TUNA 协会，全名清华大学学生网络与开源软件协会，是由清华大学热爱网络技术和开源软件的极客组成的学生技术社团。
- Subjects:
- Computing
- Keywords:
- Open source software Computer software -- Development
- Resource Type:
- Others
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Others
MedlinePlus is a service of the National Library of Medicine (NLM), the world's largest medical library, which is part of the National Institutes of Health (NIH). Our mission is to present high-quality, relevant health and wellness information that is trusted, easy to understand, and free of advertising, in both English and Spanish. Anywhere, anytime, on any device—for free.
- Course related:
- ABCT1D13 Introduction to Cancer and HSS2011 Human Anatomy
- Subjects:
- Health Sciences and Nursing
- Keywords:
- Medicine -- Computer network resources Health -- Computer network resources Medical care -- Computer network resources
- Resource Type:
- Others
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Video
Stanford Electrical Engineering Course on Convex Optimization.
- Course related:
- AMA4850 Optimization Methods
- Subjects:
- Mathematics and Statistics
- Keywords:
- Mathematical optimization Convex functions
- Resource Type:
- Video
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Others
ORCIT materials are intended to introduce and allow for basic practice in interpreting skills and techniques. Use the icon below to go straight to the training materials, or click on the menus to the right to find out more about the project.
- Subjects:
- Translating and Interpreting
- Keywords:
- Translating interpreting
- Resource Type:
- Others
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Others
Welcome to the Coding Train with Daniel Shiffman! A community dedicated to learning creative coding with beginner-friendly tutorials and projects on YouTube and more.
- Subjects:
- Computing
- Keywords:
- Coding theory Computer programming
- Resource Type:
- Others
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Others
Causal Inference for The Brave and True
- Course related:
- MM501 Research Methods
- Subjects:
- Statistics and Research Methods
- Keywords:
- Social sciences -- Statistical methods
- Resource Type:
- Others
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Others
Ocean Park Academy Hong Kong (OPAHK) was founded in 2004 to deliver education programmes in the diversified environment of Ocean Park. We aspire to become the ideal destination for life-wide learning where students of different ages can learn about nature and conservation in an enjoyable atmosphere.
- Course related:
- HTM3209 Attractions and Visitor Management and HTM4335 Theme Parks and Attractions
- Subjects:
- Hotel, Travel and Tourism
- Keywords:
- China -- Hong Kong Amusement parks
- Resource Type:
- Others
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Others
Use YouTube to improve your English pronunciation. With more than 100M tracks, YouGlish gives you fast, unbiased answers about how English is spoken by real people and in context.
- Course related:
- ELC1013 English for University Studies and ELC1A08 Digital Literacies and Language
- Subjects:
- English Language
- Keywords:
- English language -- Study teaching
- Resource Type:
- Others
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Others
In this learning object the organizational levels of life are covered. Topics include listing the simplest to most complex levels of the human body and the organ systems. Labeling activities and quiz questions are included as self-assessments.
- Subjects:
- Health Sciences
- Keywords:
- Human anatomy Human physiology
- Resource Type:
- Others
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Others
Linear programming, mathematical modeling technique in which a linear function is maximized or minimized when subjected to various constraints. This technique has been useful for guiding quantitative decisions in business planning, in industrial engineering, and—to a lesser extent—in the social and physical sciences.
- Course related:
- AAE3009 Operations Research and Computational Analytics in Air Transport Operations
- Subjects:
- Mathematics and Statistics
- Keywords:
- Linear programming
- Resource Type:
- Others
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Video
The video introduces the basic principle of ETF
- Course related:
- HTM3222 Financial Management in Hospitality, Tourism and Events
- Subjects:
- Finance
- Keywords:
- Exchange traded funds
- Resource Type:
- Video
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Others
Whether you’re interested in traveling to a new city, going on a cruise, or cooking a new dish — we’re committed to inspiring you to experience travel in a whole new way. Lonely Planet’s collection of 825+ travel and guidebooks is sure to inspire the traveler within.
- Subjects:
- Hotel, Travel and Tourism
- Keywords:
- Travel
- Resource Type:
- Others
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Others
MyScope was developed by Microscopy Australia to provide an online learning environment for those who want to learn about microscopy. The platform provides insights into the fundamental science behind different microscopes, explores what can and cannot be measured by different systems and provides a realistic operating experience on high end microscopes.
We sincerely hope you find the website an enjoyable environment where you can explore the microscopy space and leave ready to undertake your own exciting experiments.
- Course related:
- CE620 Research Methods
- Subjects:
- Laboratory Techniques and Safety
- Keywords:
- Microscopy
- Resource Type:
- Others
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Others
Learn to code, design, and more—all on your own time
- Subjects:
- Computing
- Keywords:
- Coding theory Mobile apps Computer programming
- Resource Type:
- Others
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Others
This document serves as a guide to the everyday conduct of social workers. Under section 11 of Social workers Registration Ordinance, this Code of Practice will be used as a basis for adjudication when the conduct of a social worker is alleged to have violated the standards specified in this document. It represents standards of ethical behaviour for social workers in professional relationships with clients, with colleagues, with agency, with profession, and with society as a whole. It is applicable to any professional conduct of social workers.
- Subjects:
- Social Work and Human Services
- Keywords:
- Social workers -- Professional ethics Social service -- Moral ethical aspects
- Resource Type:
- Others
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Courseware
This course has been designed for independent study. It provides everything you will need to understand the concepts covered in the course. The materials include:
A complete set of Lecture Videos by Professor Gilbert Strang.
Summary Notes for all videos along with suggested readings in Prof. Strang’s textbook Linear Algebra.
Problem Solving Videos on every topic taught by an experienced MIT Recitation Instructor.
Problem Sets to do on your own with Solutions to check your answers against when you’re done.
A selection of Java® Demonstrations to illustrate key concepts.
A full set of Exams with Solutions, including review material to help you prepare.
- Course related:
- AMA1120 Basic Mathematics II
- Subjects:
- Mathematics and Statistics
- Keywords:
- Algebras Linear
- Resource Type:
- Courseware
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Others
Our MYOB accounting practice sets teach students the practical skills essential to accounting using the MYOB accounting software package. This requires students to complete a one-month accounting cycle for a fictional business with all posting, journalising and financial reporting completed using the actual MYOB accounting software.
- Course related:
- AF3211 Accounting Information System
- Subjects:
- Accounting
- Keywords:
- Accounting -- Computer programs MYOB (Computer program)
- Resource Type:
- Others