Biology Study guides, Class notes & Summaries

2 OCR 2023 Section A You should spend a maximum of 20 minutes on this section. Write your answer to each question in the box provided. 1 Which description of biological molecules is correct? A DNA and RNA are both polymers of nucleotides. B Hydrolysis of sucrose produces fructose and β-glucose. C Proteins are polymers of amino acids and are broken down in condensation reactions. D Starch is a polymer of the monosaccharide maltose. Your answer [1] 2 Which statement about lipids is cor...

(a) Fig. 1.1 shows two cubes that represent a large and a small multicellular plant. Fig. 1.1 Large multicellular plant Small multicellular plant Length = 2cm Width = 2 cm Depth = 2cm Surface area : volume = 6:1 (i) Using the data provided in Fig. 1.1, calculate the surface area : volume of the large multicellular plant. Surface area: volume = ..........................................................[2] (ii) Explain why a large multicellular plant needs a transport system but a sm...

Section A You should spend a maximum of 25 minutes on this section. Write your answer for each question in the box provided. 1 Which statement describes a problem that has resulted from the increased use of antibiotics? A Penicillin can no longer be used to treat infections. B Rates of MRSA infection have increased. C Some bacteria and fungi have evolved resistance to antibiotics. D Viral infections can no longer be treated with antibiotics. Your answer [1] 2 The diagram shows a compute...

Biology Exam 1 Study Guide Chapter 2 Questions and Answers Explain the difference between organic and inorganic molecules -Answer-Organic has carbon skeletons and inorganic molecules do not. Organisms are mostly made up of organic compounds and inorganic are important for water salt etc What is an atom? -Answer-Smallest particle of an element What is an element? -Answer-Cannot be broken down further by ordinary chemical means What are the three parts of an atom? What are the charges? -An...

Biology Lab exam 1 2024 kilo (k) -Answer-10^3 (1,000) base -Answer-1 deci (d) -Answer-10^-1 (0.1) centi (c) -Answer-10^-2 (0.01) milli (m) -Answer-10^-3 (0.001) micro -Answer-10^-6 (0.000001) tera (T) -Answer-10^12 (1,000,000,000,000) giga (G) -Answer-10^9 (1,000,000,000) mega (M) -Answer-10^6 (1,000,000) hecto (h) -Answer-10^2 (100) deca (da) -Answer-10^1 (10) nano (n) -Answer-10^-9 (0.) pico (p) -Answer-10^-12 (0.000) millimeters -Answer-10 millimeters per centimeter centimeters...

Biology Exam 1 Study Guide Chapter 3 with Complete Solutions 2024 Why are carbon atoms considered the most important atom for organic molecules? - Answer-Valence electrons - shape: determines function, bond angles and geomerty - number of bonds: flexibility Why are carbon compounds so diverse in their structure? (How can they be so diverse) -Answer-Because of the number of bonds carbon can make, carbon compounds can have a variety of configurations What are isomers? -Answer-compounds wit...

Biology Exam 1 Study Guide Chapter 1 Questions and Answers What are the themes of biology? -Answer-bsi, sff, it, eil, lcttpoe What is cell the theory? -Answer-cells are the basic building blocks of life How do growth and development affect an organism over their lifespan -Answer-Growth involves increasing the size of an organism and development involves changes to body structure during the course of an organisms life cycle What is metabolism? -Answer-sum of all chemical reactions in an or...

Biology Exam 1 Study Guide Chapter 4 Questions and Answers What are the basic functions of life? -Answer-Production of chemicals/compounds/molecules - maintenance of cell health - growth - energy production Be able to give examples of prokaryotic and eukaryotic cells -Answer-Prokaryotic - Eubacteria and Archaea Eukaryotic - Animal cells and Plant cells What are the differences between prokaryotic and eukaryotic cells? -Answer- Prokaryotic cell do not have a nucleus, and no membrane arou...

Biology Exam 1 Study Guide Set HW 2024 The science of life is -Answer-Biology Identify the three of the five basic themes in biology -Answer-The evolution of life, The interactions of living systems, The transmission of information. The cell theory states that all living organisms -Answer-Are composed of basic units called cells If an organism is a eukaryotic, then by definition, it will -Answer-Possess a nucleus Homeostasis in living organisms involves process that -Answer-Maintain a con...

Bio 255 exam 1 questions and answers Components of whole blood - correct answer-~Erythrocytes-RBS