\nOSAT Flashcards<\/a>
\nOther OSAT Tests<\/a>\n<\/div>\n
<\/span>OSAT Biological Sciences Exam Outline<\/h2>\nThe OSAT Biological Sciences exam contains 80 selected-response questions and one constructed-response question, and you will be given a time limit of 4 hours.<\/p>\n
The exam is split into four subareas.<\/p>\n
<\/span>I. Structures and Processes of Cells and Organisms (33%)<\/h3>\nThe questions in this subarea cover the following topics:<\/p>\n
\n- Characteristics and biochemistry of molecules and atoms necessary for life<\/li>\n
- Cell characteristics, processes, and structures<\/li>\n
- Photosynthesis<\/li>\n
- Cellular respiration<\/li>\n
- The flow of energy and matter in cells<\/li>\n
- Organismal maintenance, growth, and reproduction<\/li>\n<\/ul>\n
<\/span>II. Ecosystem Energy Flow, Interactions, and Dynamics (26%)<\/h3>\nThe questions in this subarea cover the following topics:<\/p>\n
\n- Characteristics of biomes and ecosystems<\/li>\n
- The flow of matter and energy in organisms and ecosystems<\/li>\n
- The impact of human activities on the environment and society<\/li>\n<\/ul>\n
<\/span>III. Heredity and Evolution (26%)<\/h3>\nThe questions in this subarea cover the following topics:<\/p>\n
\n- The molecular basis of inheritance<\/li>\n
- The inheritance and variation of traits<\/li>\n
- Natural selection<\/li>\n
- Adaptation<\/li>\n
- Diversity of life<\/li>\n<\/ul>\n
<\/span>IV. Constructed-Response Assignment (15%)<\/h3>\nThis subarea contains the single constructed-response question. You will be given a lesson plan and a sample of student work to analyze. You will then be asked to describe instructional strategies that pertain to student needs.<\/p>\n\n\t\t\t
\n\t\t\t\t\n\t\t\t\t\tCheck Out Mometrix's OSAT Study Guide<\/p>\n\t\t\t\t\t
Get practice questions, video tutorials, and detailed study lessons<\/p>\n\t\t\t\t\tGet Your Study Guide<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t![\"](\"https:\/\/www.mometrix.com\/academy\/wp-content\/uploads\/2025\/12\/osatbiosci110.jpg\")
\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n<\/span>Registration<\/h2>\nTo register for the OSAT Biological Sciences exam, you must create an online NES account via their website. Once your account has been created, you can use it to register for the exam and schedule an exam date. When you register, you will need to pay the $118 exam fee.<\/p>\n
<\/span>Test Day<\/h2>\n<\/span>In-person Testing<\/h3>\nYou should arrive at the testing center 15-30 minutes early for your examination appointment. When you arrive, you will be asked to sign in and present a valid form of photo ID to the proctor. If you fail to bring your ID, you will not be able to take the exam.<\/p>\n
Personal items are not allowed in the testing room, so they must be stored in a secure locker outside the testing area.<\/p>\n
Just before the exam starts, you will be given a brief tutorial on the testing system.<\/p>\n
<\/span>Remote Testing<\/h3>\nYou should log into your testing account at least 15 minutes prior to the scheduled appointment time. The proctor will ask you to show a valid form of government-issued photo ID, and they will ask you to scan your surroundings using your webcam.<\/p>\n
Once your exam begins, you cannot leave the webcam view, take breaks, or talk to yourself. Your focus must be on the exam, and other people must be out of your testing space while you take the exam.<\/p>\n
Should the proctor determine that you are not following the guidelines for remote proctoring, your exam can be canceled, and your registration fees forfeited.<\/p>\n
<\/span>How the Exam is Scored<\/h2>\nYour OSAT Biological Sciences score is determined by taking your raw score (the number of questions you answered correctly) and converting it to a scaled score. To pass, you will need to get a minimum scaled score of 240.<\/p>\n
You will receive your official score report within four weeks after testing.<\/p>\n\n\t\t\t
\n\t\t\t\t\n\t\t\t\t\tCheck Out Mometrix's OSAT Flashcards<\/p>\n\t\t\t\t\t
Get complex subjects broken down into easily understandable concepts<\/p>\n\t\t\t\t\tGet Your Flashcards<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t![\"](\"https:\/\/www.mometrix.com\/academy\/wp-content\/uploads\/2025\/12\/osatbiosci110flash.jpg\")
\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n<\/span>FAQs<\/h2>\n\n\n\nQ<\/h4>\n
How many questions are on the OSAT Biological Sciences exam?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
There are 81 questions on the exam.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n
\n\nQ<\/h4>\n
How long is the OSAT Biological Sciences exam?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
The time limit for the exam is 4 hours.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n
\n\nQ<\/h4>\n
What is the passing score for the OSAT Biological Sciences exam?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
To pass the exam, you must achieve a minimum scaled score of 240.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n
\n\nQ<\/h4>\n
How much does the OSAT Biological Sciences exam cost?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
The examination fee is $118.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n\n
![\"Headshot](\"https:\/\/www.mometrix.com\/academy\/wp-content\/uploads\/2024\/01\/Eric-Richter-scaled.webp\")
By Eric Richter<\/span><\/p>Eric is the Product Development Manager responsible for developing and updating the Mometrix Teacher Certification and K-12 products. Eric has a bachelor\u2019s degree in Sociology and a master\u2019s of education in Teaching ESOL.<\/p>\n<\/div><\/div><\/div>
![\"Aaron](\"https:\/\/www.mometrix.com\/academy\/wp-content\/uploads\/2024\/12\/image_2024-12-11_124906662.png\")
The questions in this subarea cover the following topics:<\/p>\n
- \n
- Characteristics and biochemistry of molecules and atoms necessary for life<\/li>\n
- Cell characteristics, processes, and structures<\/li>\n
- Photosynthesis<\/li>\n
- Cellular respiration<\/li>\n
- The flow of energy and matter in cells<\/li>\n
- Organismal maintenance, growth, and reproduction<\/li>\n<\/ul>\n
<\/span>II. Ecosystem Energy Flow, Interactions, and Dynamics (26%)<\/h3>\n
The questions in this subarea cover the following topics:<\/p>\n
- \n
- Characteristics of biomes and ecosystems<\/li>\n
- The flow of matter and energy in organisms and ecosystems<\/li>\n
- The impact of human activities on the environment and society<\/li>\n<\/ul>\n
<\/span>III. Heredity and Evolution (26%)<\/h3>\n
The questions in this subarea cover the following topics:<\/p>\n
- \n
- The molecular basis of inheritance<\/li>\n
- The inheritance and variation of traits<\/li>\n
- Natural selection<\/li>\n
- Adaptation<\/li>\n
- Diversity of life<\/li>\n<\/ul>\n
<\/span>IV. Constructed-Response Assignment (15%)<\/h3>\n
This subarea contains the single constructed-response question. You will be given a lesson plan and a sample of student work to analyze. You will then be asked to describe instructional strategies that pertain to student needs.<\/p>\n\n\t\t\t
\n\t\t\t\t\n\t\t\t\t\tCheck Out Mometrix's OSAT Study Guide<\/p>\n\t\t\t\t\t
Get practice questions, video tutorials, and detailed study lessons<\/p>\n\t\t\t\t\tGet Your Study Guide<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t
\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n<\/span>Registration<\/h2>\n
To register for the OSAT Biological Sciences exam, you must create an online NES account via their website. Once your account has been created, you can use it to register for the exam and schedule an exam date. When you register, you will need to pay the $118 exam fee.<\/p>\n
<\/span>Test Day<\/h2>\n
<\/span>In-person Testing<\/h3>\n
You should arrive at the testing center 15-30 minutes early for your examination appointment. When you arrive, you will be asked to sign in and present a valid form of photo ID to the proctor. If you fail to bring your ID, you will not be able to take the exam.<\/p>\n
Personal items are not allowed in the testing room, so they must be stored in a secure locker outside the testing area.<\/p>\n
Just before the exam starts, you will be given a brief tutorial on the testing system.<\/p>\n
<\/span>Remote Testing<\/h3>\n
You should log into your testing account at least 15 minutes prior to the scheduled appointment time. The proctor will ask you to show a valid form of government-issued photo ID, and they will ask you to scan your surroundings using your webcam.<\/p>\n
Once your exam begins, you cannot leave the webcam view, take breaks, or talk to yourself. Your focus must be on the exam, and other people must be out of your testing space while you take the exam.<\/p>\n
Should the proctor determine that you are not following the guidelines for remote proctoring, your exam can be canceled, and your registration fees forfeited.<\/p>\n
<\/span>How the Exam is Scored<\/h2>\n
Your OSAT Biological Sciences score is determined by taking your raw score (the number of questions you answered correctly) and converting it to a scaled score. To pass, you will need to get a minimum scaled score of 240.<\/p>\n
You will receive your official score report within four weeks after testing.<\/p>\n\n\t\t\t
\n\t\t\t\t\n\t\t\t\t\tCheck Out Mometrix's OSAT Flashcards<\/p>\n\t\t\t\t\t
Get complex subjects broken down into easily understandable concepts<\/p>\n\t\t\t\t\tGet Your Flashcards<\/a>\n\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t
\n\t\t\t\t<\/a>\n\t\t\t<\/div>\n<\/span>FAQs<\/h2>\n
\n\n\nQ<\/h4>\n
How many questions are on the OSAT Biological Sciences exam?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
There are 81 questions on the exam.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n
\n\nQ<\/h4>\n
How long is the OSAT Biological Sciences exam?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
The time limit for the exam is 4 hours.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n
\n\nQ<\/h4>\n
What is the passing score for the OSAT Biological Sciences exam?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
To pass the exam, you must achieve a minimum scaled score of 240.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n
\n\nQ<\/h4>\n
How much does the OSAT Biological Sciences exam cost?<\/p>\n<\/p><\/div>\n
\nA<\/h4>\n
The examination fee is $118.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/div>\n\n
By Eric Richter<\/span><\/p>
Eric is the Product Development Manager responsible for developing and updating the Mometrix Teacher Certification and K-12 products. Eric has a bachelor\u2019s degree in Sociology and a master\u2019s of education in Teaching ESOL.<\/p>\n<\/div><\/div><\/div>