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surface tension. hydrogen bonds that hold together to hold a light object. essential elements. major elements are C, H, O, N, S, P. Why is water polar. the oxygen atom has a slight negative charge and the 2 hydrogen atoms have a slight positive charge. properties of water.
Study with Quizlet and memorize flashcards containing terms like Water characteristics, Surface Tension, Specific Heat and more.
Quiz yourself with questions and answers for AP Biology 2021-2022 Semester 1 Final Exam (FRQ), so you can be ready for test day. Explore quizzes and practice tests created by teachers and students or create one from your course material.
Download free-response questions from past AP Biology exams, along with scoring guidelines, sample responses from exam takers, and scoring distributions.
AP ® Biology 2021 Scoring Commentary . Question 2 (continued) Sample: 2B Score: 5 . The response earned 1 point in part (a) for describing that a glucose molecule contains atoms of carbon, hydrogen, and oxygen that are covalently bonded. The response earned 1 point in part (b) for constructing a graph labeled with
Questions 1 and 2 are long free-response questions that require about 25 minutes each to answer. Questions 3 through 6 are short free-response questions that require about 10 minutes each to answer. Read each question carefully and completely. Answers must be written out in paragraph form.
From the smallest building blocks of cells to how those structures allow cells to move and nourish themselves, cells are the focus of this unit. These questions will test your knowledge of how substances enter and exit cells and how cellular components are organized. Question 1.
