Biology aqa as leve - Study guides, Class notes & Summaries

Biology AQA AS level 7401/1 Paper 1 solutions 2023

Biology AQA AS level 7401/1 Paper 1 With Questions & Veried Answers Ltest Update Contrast the structures of DNA and mRNA molecules to give three differences. - ANSWER>>- DNA is double stranded/double helix and mRNA single-stranded; - DNA (very) long and RNA short; -Thymine/T in DNA and uracil/U in RNA; - Deoxyribose in DNA and ribose in RNA; Describe the difference between the structure of a triglyceride molecule and the - ANSWER>>In phospholipid, one fatty acid replaced by a phos...

Biology AQA AS level 7401/1 Paper 1 solutions 2023 • The human cell then makes a complementary strand to the HIV DNA. The complementary strand is made in the same way as a new complementary strand is made during semi-conservative replication of human DNA. Describe how the complementary strand of HIV DNA is made. - ANS-- there are complementary nucleotides/bases pair - DNA polymerase used - Nucleotides join together (to form new strand)/phosphodiester bonds form; Contrast the structures...

Biology AQA AS level 7401/1 Paper 1 with verified answers

7401 AQA AUGUST-DECEMBER 2023 BIOLOGY AS LEVEL PAPER 1 Final MARK SHEME

Biology AQA AS level Biology Paper 1(questions &answers • The human cell then makes a complementary strand to the HIV DNA. The complementary strand is made in the same way as a new complementary strand is made during semi-conservative replication of human DNA. Describe how the complementary strand of HIV DNA is made. - CORRECT ANSWER-- there are complementary nucleotides/bases pair - DNA polymerase used - Nucleotides join together (to form new strand)/phosphodiester bonds form; Con...

Biology AQA AS level 7401/1 Paper 1- Questions and Answers 100% Solved

AQA AS Level Biology Paper 2 2020 Mark scheme AQA BIOLOGY AS LEVEL JUNE PAPER 2 Mark Scheme Mark scheme instructions to examiners 1. General The mark scheme for each question shows: • the marks available for each part of the question • the total marks available for the question • the typical answer or answers which are expected • Extra information to help the examiner make his or her judgement and help to delineate whatiiis acceptable or not worthy of credit or, in disc...

2024 AQA AS BIOLOGY 7401/1 Paper 1 Question Paper & Mark scheme (Merged) June 2023 VERIFIED / Biology AQA AS level 7401/1 Paper 1