2025-biology-f4-marking-scheme-t2-exam-1-teacher.co_.ke_1
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About This Document
Document Type: This is a Exam Paper, designed for Testing knowledge and exam technique.
Context: Standard material from the 2025 academic period.
Key Content: Likely covers essential definitions, theoretical concepts necessary for mastery of the subject.
Study Strategy: Attempt these questions under timed conditions to simulate a real exam environment, then check against your notes.
Recommendation: comprehensive resource for students aiming to achieve top grades in their final assessments.
Detailed Content Overview
Introduction
This notes resource titled "2025-biology-f4-marking-scheme-t2-exam-1-teacher.co_.ke_1" provides comprehensive exam preparation materials designed to test and enhance your understanding. This resource is structured to facilitate effective learning and retention of important information.
Key Topics Covered
Learning Objectives
- Master key concepts required for examination success
- Practice answering exam-style questions effectively
- Develop time management skills for timed assessments
- Identify and address knowledge gaps in understanding
Detailed Summary
BIOLOGY FORM: FOUR TERM 2 2025 Download this and other FREE materials from https://teacher. Below is a nucleic acid strand, observe it and answer the questions that follows. ✓ G-T-T-A-G-C-T-G-A a) Giving reasons state whether it is part of a DNA or an RNA (2marks) ✓ DNA; presence of Thymine. b) Write the complimentary DNA strand (1 mark) C-A-A-T-C-G-A-C-T c) Show the complimentary RNA strand (1 mark) ✓ C-A-A-U-C-G-A-C-U 2. State three differences between DNA and RNA ✓ ✓ ✓ ✓ (3marks) DNA is double stranded nucleic acid molecule while RNA is a single stranded DNA contain Thymine while RNA has Uracil DNA store genetic information/ instructions while RNA carry genetic instructions DNA has deoxyribose sugar while RNA has ribose sugar 3. Differentiate between phenotype and genotype as used in genetics. (2marks) ✓ Phenotype is a set of observable/physical characteristics of an organism while genotype is a genetic constitution of an organism. State the Mendel's first law of inheritance, the law of segregation (2marks) ✓ The characteristics of an organism are determined by a pair of factors/ hereditary factors (accept genes) which occurs in pairs.
Study Tips & Recommendations
Time Management
Practice under timed conditions to improve speed and accuracy. Allocate specific time limits to each section.
Active Practice
Attempt all questions before checking answers. Review mistakes to understand where improvements are needed.
Mark Scheme Review
Study marking schemes carefully to understand how examiners award points and structure your answers accordingly.
Regular Review
Schedule periodic reviews to reinforce learning and combat forgetting. Use spaced repetition for optimal retention.
Content Preview
BIOLOGY FORM: FOUR TERM 2 2025 Download this and other FREE materials from https://teacher.co.ke/notes OPENER EXAMINATION 1. Below is a nucleic acid strand, observe it and answer the questions that follows. ✓ G-T-T-A-G-C-T-G-A a) Giving reasons state whether it is part of a DNA or an RNA (2marks) ✓ DNA; presence of Thymine. b) Write the complimentary DNA strand (1 mark) C-A-A-T-C-G-A-C-T c) Show the complimentary RNA strand (1 mark) ✓ C-A-A-U-C-G-A-C-U 2. State three differences between DNA and...
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